Re: [Neo4j] JAXRS Server Extensions

[Kiss, Miklós]

Great!

I'm looking forward to test the new version.
> Hi Miklós,
>
> Batch updates through the REST API will be supported from 1.4 M4 which should 
> be released today - so no need to roll your own.
>
> Jim
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Re: [Neo4j] Recent Experience with RingoJS (Rhino) and Neo4j

[Emil Eifrem]

On Tue, Jun 7, 2011 at 06:36, McKinley  wrote:
> I will release a RingoJS package for Neo4j soon. Please let me know if you
> have any questions. If you would like to arrange a demonstration of Neo4j
> and RingoJS at your local meetup in San Francisco, Orange County or San
> Diego please let me know. I would love to present this effective and
> interesting combination and answer more questions.

As Michael said, great post! Please point us to a blogified version if
you get around to it (or as a guest post on blog.neo4j.org). I think
Andreas Kollegger (who's running the SF meetups) would love to have
you present at the next available free slot.

Great work!

Cheers,

-- 
Emil Eifrém, CEO [e...@neotechnology.com]
Neo Technology, www.neotechnology.com
Cell: +46 733 462 271 | US: 206 403 8808
http://blogs.neotechnology.com/emil
http://twitter.com/emileifrem
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Re: [Neo4j] Design question: Del.icio.us

[Max De Marzi Jr.]

Not quite.  What I am saying is that it is best to define the
questions you want to answer before picking a solution and building a
model.

Look at Josef scenarios, a tagging table with fields
[user_id][tag_id][bookmark_id][created_at] gives you tag activity
streams and is not complex at all.

I found a hybrid solution worked best for me.  90% of my questions
were answered with a table and the other 10% with a simple graph
model.
Be pragmatic and don't limit yourself to having to choose.


On Thu, Jun 9, 2011 at 1:49 PM, Aseem Kishore  wrote:
> Max, just to be clear, are you basically saying that this problem is best
> solved by a relational db instead of a graph db?
>
> Thanks,
> Aseem
>
> On Wed, Jun 8, 2011 at 11:21 PM, Max De Marzi Jr. wrote:
>
>> Aseem,
>>
>> Which users tagged what? SELECT DISTINCT user_id FROM USER_TAGS WHERE
>> bookmark_id = x
>> Which bookmarks did a user tag? SELECT DISTINCT bookmark_id FROM
>> USER_TAGS WHERE user_id = x
>> Which bookmarks were tagged with x? SELECT DISTINCT bookmark_id FROM
>> USER_TAGS WHERE tag_id = x
>>
>> What question are you trying to answer that you can't get from a
>> relational table?
>>
>> I think it's better to make your model depending on the questions you
>> are trying to answer.
>>
>> I have a similar model (users tagging users) and I needed to answer:
>> Which users have been tagged by me or my network 6 degrees out?
>> What is the tagged distance a user is away from another user?
>>
>> Turns out, all I needed was User nodes with Tagged links.  User ->
>> tagged -> User -> tagged -> User
>> Everything else I get from the relational db.
>>
>> When I start to care about which users have been tagged for by me or
>> my network 6 degrees out for this KEYWORD, then I'll create a more
>> complex model:
>> User -> UserKeyword -> tagged -> UserKeyword -> User
>>    Keyword  ---/                        Keyword  ---/
>>
>> Regards,
>> Max
>>
>> On Thu, Jun 9, 2011 at 12:33 AM, Aseem Kishore 
>> wrote:
>> > Also forgot to add: now if you want to show all links (globally) for a
>> given
>> > tag, how do you do that? Are you indexing each tag-link (as a key-value
>> > pair) every time a tag is added? Removing from the index every time a tag
>> is
>> > deleted?
>> >
>> > Thanks,
>> >
>> > Aseem
>> >
>> > On Wed, Jun 8, 2011 at 10:31 PM, Aseem Kishore > >wrote:
>> >
>> >> I forgot to state this, but a key requirement of tags of course is that
>> you
>> >> can apply multiple of them to the same link.
>> >>
>> >> Would you still go that route then?
>> >>
>> >> If you want to delete a link from your bookmarks, it's a matter then of
>> >> deleting each tag edge?
>> >>
>> >> Aseem
>> >>
>> >>
>> >> On Wed, Jun 8, 2011 at 10:28 PM, Siddhartha Kasivajhula <
>> >> countvajh...@gmail.com> wrote:
>> >>
>> >>> Couldn't you use edges for "tags" instead of nodes?
>> >>>
>> >>> user1 --tag--> link1
>> >>> user2 --tag--> link1
>> >>> user1 --tag--> link2
>> >>>
>> >>>
>> >>> On Wed, Jun 8, 2011 at 10:23 PM, Aseem Kishore <
>> aseem.kish...@gmail.com
>> >>> >wrote:
>> >>>
>> >>> > Hi guys,
>> >>> >
>> >>> > We're thinking about implementing tags in our system, and we're
>> >>> pondering a
>> >>> > few ideas for how we'd go about it, and none of them seem perfect.
>> I'd
>> >>> like
>> >>> > to ask you guys: how would you design an analogous case: Del.icio.us
>> ?
>> >>> >
>> >>> > At the core, *users bookmark links*, so it makes sense to have
>> "users"
>> >>> and
>> >>> > "links" as types of nodes, and "bookmark" as the type of edge that
>> >>> connects
>> >>> > them. Now, you can see all the links a given user has bookmarked, and
>> >>> all
>> >>> > the users that have bookmarked a given link.
>> >>> >
>> >>> > Now users can also *tag* links, of course, but the most interesting
>> >>> > requirement is that, when I'm looking at *my links*, I only want to
>> see
>> >>> *my
>> >>> > tags*. Thus, tags can't be tied just to links; they have to be tied
>> to
>> >>> > users
>> >>> > too. But most importantly, you have to maintain *which* user and
>> *which*
>> >>> > link *each* tag is for.
>> >>> >
>> >>> > Thus, it seems most intuitive to us if we could have "tags" be nodes
>> >>> > that *point
>> >>> > to the "bookmark" edges*. Unfortunately, that's a hypergraph, which
>> >>> Neo4j
>> >>> > doesn't support.
>> >>> >
>> >>> > We could use intermediate nodes for bookmarks maybe, but that sort of
>> >>> sucks
>> >>> > to lose the intuitiveness of the graph and introduce redundant edges,
>> >>> more
>> >>> > complexity which makes consistency harder, etc.
>> >>> >
>> >>> > We have some other ideas, but I'm curious if any of you guys have
>> >>> thought
>> >>> > about this already or have done it, or if you guys have thoughts.
>> Thanks
>> >>> in
>> >>> > advance!
>> >>> >
>> >>> > Aseem
>> >>> > ___
>> >>> > Neo4j mailing list
>> >>> > User@lists.neo4j.org
>> >>> > https://lists.neo4j.org/mailman/listinfo/user
>> >>> >
>> >>> ___

Re: [Neo4j] No index provider 'lucene' found

[Michael Hunger]

Ian,

can you share your project somehow at least config and the startup class? What 
are eclipse and gwt plugin versions?

M

Sent from my iBrick4


Am 10.06.2011 um 03:33 schrieb Ian Bussières :

> The web server is slightly ambiguous, because it's a GWT eclipse
> plugin that is used to run. I do believe it to be a Tomcat server. I'm
> trying to find a source that confirms that.
> 
> Nothing about OSGi, no... The messages.log looks ok, apart from a few
> non clean shutdowns but successful recoveries.
> 
> Ian Bussières
> Étudiant en Génie des Technologies de l'Information
> École de technologie supérieure
> [514] 814-0136
> 
> 
> 
> On Thu, Jun 9, 2011 at 21:03, Michael Hunger
>  wrote:
>> Ian,
>> 
>> is that web-server a stock tomcat or jetty or something running an OSGi 
>> environment?
>> 
>> So do you see something about OSGi containers being started in your console 
>> output (felix, equinox)?
>> 
>> Could you have a look at the messages.log file in your graphdb directory if 
>> it shows anything unusual?
>> 
>> Thanks
>> 
>> Michael
>> 
>> Am 10.06.2011 um 02:49 schrieb Ian Bussières:
>> 
>>> New buildpath, same problem.
>>> 
>>> C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
>>> Files 
>>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
>>> Files 
>>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
>>> Files 
>>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
>>> Files 
>>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar
>>> 
>>> 
>>> 
>>> On Thu, Jun 9, 2011 at 20:32, Michael Hunger
>>>  wrote:
 Can you please try to remove the lucene-core-3.0.1. It is possible that 
 mixing two versions of lucene at the classpath messes things up.
 
 Cheers
 
 Michael
 
 Am 10.06.2011 um 02:27 schrieb Ian Bussières:
 
> Definitely on server side code.
> 
> I start up the application directly in eclipse with the built in web 
> server.
> 
> C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.0.1.jar
> 
> 
> 
> 
> On Thu, Jun 9, 2011 at 19:32, Michael Hunger
>  wrote:
>> But you're not trying to run Neo4j in the gwt client side code but 
>> rather on the server?
>> 
>> How exactly do you start-up your application?
>> 
>> The classpath you supplied is imho the build-classpath and not 
>> necessarily the run-classpath? Can you verify that?
>> 
>> you can get the runtime classpath by using jsp to determine the pid of 
>> your java process and jinfo  to extract the information.
>> 
>> Cheers
>> 
>> Michael
>> 
>> Am 10.06.2011 um 01:20 schrieb Ian Bussières:
>> 
>>> Thanks for 

[Neo4j] unique indexes

[Matt C]

Sorry if this is covered somewhere, I couldn't find it in the docs.  I was
wondering if its possible to create unique indexes with the
LuceneIndexProvider?

-Matt
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[Neo4j] Lake Constance Hackathon (South of Germany)

[Christopher Schmidt]

Hi all,

we will do a Hackathon in Friedrichshafen and we have some ideas for Neo4j
projects as well (see
http://lcgtug.mixxt.de/networks/wiki/index.graphdb_project_proposals).

So who ever is located at Lake Constance in Germany and is interested in
Neo4j (-Spatial) is invited to attend :-)

More Infos are here: http://lcgtug.mixxt.de/

-- 
Christopher
twitter: @fakod
blog: http://blog.fakod.eu
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Re: [Neo4j] Gremlin

[Marko Rodriguez]

Hey,

I've seen that before. You are building with Maven3 and the pom.xml of the 
Neo4j Server Gremlin plugin is done with Maven2. Its a simple fix -- basically, 
some aspects of the pom.xml are not respected, just need to be updated.

Peter?

Marko.

http://markorodriguez.com

On Jun 9, 2011, at 10:26 PM, Pierre De Wilde wrote:

> Hey,
> 
> I got errors when building plugin:
> 
> ~/Documents/_GraphDatabases/Neo4j/neo4j-gremlin-plugin$ mvn clean package
> Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
> [INFO] Scanning for projects...
> [WARNING]
> [WARNING] Some problems were encountered while building the effective model
> for org.neo4j.server.plugin:neo4j-gremlin-plugin:jar:0.1-SNAPSHOT
> [WARNING] 'repositories.repository.layout' for
> maven-repository.dev.java.netuses the unsupported value 'legacy',
> artifact resolution might fail. @ line
> 225, column 15
> [WARNING]
> [WARNING] It is highly recommended to fix these problems because they
> threaten the stability of your build.
> [WARNING]
> [WARNING] For this reason, future Maven versions might no longer support
> building such malformed projects.
> [WARNING]
> [INFO]
> 
> [INFO]
> 
> [INFO] Building neo4j-gremlin-plugin 0.1-SNAPSHOT
> [INFO]
> 
> [WARNING] Could not transfer metadata
> org.neo4j.app:neo4j-server:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> 
> [WARNING] Could not transfer metadata
> org.neo4j.app:neo4j-server:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> [WARNING] Could not transfer metadata
> org.neo4j:neo4j:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> [WARNING] Could not transfer metadata
> org.neo4j:neo4j-kernel:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> [WARNING] Could not transfer metadata
> org.neo4j:neo4j-kernel:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> [WARNING] Could not transfer metadata
> org.neo4j:neo4j-lucene-index:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> [WARNING] Could not transfer metadata
> org.neo4j:neo4j-lucene-index:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> [WARNING] Could not transfer metadata
> org.neo4j:neo4j-graph-algo:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> [WARNING] Could not transfer metadata
> org.neo4j:neo4j-graph-algo:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the available
> factories WagonRepositoryConnectorFactory
> [WARNING] Could not transfer metadata
> org.neo4j:neo4j-udc:1.4-SNAPSHOT/maven-metadata.xml from/to
> maven-repository.dev.java.net (http://download.java.net/maven/1): No
> connector available to access repository maven-repository.dev.java.net (
> http://download.java.net/maven/1) of type legacy using the ava

Re: [Neo4j] Gremlin

[Pierre De Wilde]

Hey,

I got errors when building plugin:

~/Documents/_GraphDatabases/Neo4j/neo4j-gremlin-plugin$ mvn clean package
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model
for org.neo4j.server.plugin:neo4j-gremlin-plugin:jar:0.1-SNAPSHOT
[WARNING] 'repositories.repository.layout' for
maven-repository.dev.java.netuses the unsupported value 'legacy',
artifact resolution might fail. @ line
225, column 15
[WARNING]
[WARNING] It is highly recommended to fix these problems because they
threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support
building such malformed projects.
[WARNING]
[INFO]

[INFO]

[INFO] Building neo4j-gremlin-plugin 0.1-SNAPSHOT
[INFO]

[WARNING] Could not transfer metadata
org.neo4j.app:neo4j-server:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory

[WARNING] Could not transfer metadata
org.neo4j.app:neo4j-server:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-kernel:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-kernel:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-lucene-index:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-lucene-index:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-graph-algo:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-graph-algo:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-udc:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-udc:1.4-SNAPSHOT/maven-metadata.xml from/to
maven-repository.dev.java.net (http://download.java.net/maven/1): No
connector available to access repository maven-repository.dev.java.net (
http://download.java.net/maven/1) of type legacy using the available
factories WagonRepositoryConnectorFactory
[WARNING] Could not transfer metadata
org.neo4j:neo4j-graph-matching:1.4-SNAPSHOT/maven-metadata.xml from/to

Re: [Neo4j] No index provider 'lucene' found

[Ian Bussières]

The web server is slightly ambiguous, because it's a GWT eclipse
plugin that is used to run. I do believe it to be a Tomcat server. I'm
trying to find a source that confirms that.

Nothing about OSGi, no... The messages.log looks ok, apart from a few
non clean shutdowns but successful recoveries.

Ian Bussières
Étudiant en Génie des Technologies de l'Information
École de technologie supérieure
[514] 814-0136



On Thu, Jun 9, 2011 at 21:03, Michael Hunger
 wrote:
> Ian,
>
> is that web-server a stock tomcat or jetty or something running an OSGi 
> environment?
>
> So do you see something about OSGi containers being started in your console 
> output (felix, equinox)?
>
> Could you have a look at the messages.log file in your graphdb directory if 
> it shows anything unusual?
>
> Thanks
>
> Michael
>
> Am 10.06.2011 um 02:49 schrieb Ian Bussières:
>
>> New buildpath, same problem.
>>
>> C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
>> Files 
>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
>> Files 
>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
>> Files 
>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
>> Files 
>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar
>>
>>
>>
>> On Thu, Jun 9, 2011 at 20:32, Michael Hunger
>>  wrote:
>>> Can you please try to remove the lucene-core-3.0.1. It is possible that 
>>> mixing two versions of lucene at the classpath messes things up.
>>>
>>> Cheers
>>>
>>> Michael
>>>
>>> Am 10.06.2011 um 02:27 schrieb Ian Bussières:
>>>
 Definitely on server side code.

 I start up the application directly in eclipse with the built in web 
 server.

 C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
 Files 
 (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
 Files 
 (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
 Files 
 (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
 Files 
 (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.0.1.jar




 On Thu, Jun 9, 2011 at 19:32, Michael Hunger
  wrote:
> But you're not trying to run Neo4j in the gwt client side code but rather 
> on the server?
>
> How exactly do you start-up your application?
>
> The classpath you supplied is imho the build-classpath and not 
> necessarily the run-classpath? Can you verify that?
>
> you can get the runtime classpath by using jsp to determine the pid of 
> your java process and jinfo  to extract the information.
>
> Cheers
>
> Michael
>
> Am 10.06.2011 um 01:20 schrieb Ian Bussières:
>
>> Thanks for the quick answer, here's the config :
>>
>> JVM 1.6.0_24
>>
>> I am compiling through GWT, which might somewhat impact the build,
>> although I doubt it.
>>
>> Classpath, which answers some of your questions itself :
>>
>> 
>> 
>>       
>>       
>>       
>>       > path="com

Re: [Neo4j] WebAdmin executing bad requests

[Michael Hunger]

Tatham,

what version of neo4j-server are you running, and can you please post the 
content of the conf/neo4j-server.properties file?

Thanks

Michael

Am 07.06.2011 um 04:20 schrieb Tatham Oddie:

> Howdy!
> 
> Neo4j n00b here ...
> 
> My /webadmin/ console loads but doesn't let me create nodes, relationships, 
> or anything like that. It just fails silently.
> 
> I've noticed that when it's loading, it attempts to make an AJAX call to this 
> address:
> 
> http://localhost:5105/http://localhost:5105/db/data/?_=1307412157988
> 
> You'll notice that it's malformed, and thus results in a 404.
> 
> Any tips on where I should go next?
> 
> 
> --
> Tatham Oddie
> au mob: +61 414 275 989, us cell: +1 213 280 3556, skype: tathamoddie
> If you're printing this email, you're doing it wrong. This is a computer, not 
> a typewriter.
> 
> ___
> Neo4j mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user

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Re: [Neo4j] No index provider 'lucene' found

[Michael Hunger]

Ian,

is that web-server a stock tomcat or jetty or something running an OSGi 
environment?

So do you see something about OSGi containers being started in your console 
output (felix, equinox)?

Could you have a look at the messages.log file in your graphdb directory if it 
shows anything unusual?

Thanks

Michael

Am 10.06.2011 um 02:49 schrieb Ian Bussières:

> New buildpath, same problem.
> 
> C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar
> 
> 
> 
> On Thu, Jun 9, 2011 at 20:32, Michael Hunger
>  wrote:
>> Can you please try to remove the lucene-core-3.0.1. It is possible that 
>> mixing two versions of lucene at the classpath messes things up.
>> 
>> Cheers
>> 
>> Michael
>> 
>> Am 10.06.2011 um 02:27 schrieb Ian Bussières:
>> 
>>> Definitely on server side code.
>>> 
>>> I start up the application directly in eclipse with the built in web server.
>>> 
>>> C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
>>> Files 
>>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
>>> Files 
>>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
>>> Files 
>>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
>>> Files 
>>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.0.1.jar
>>> 
>>> 
>>> 
>>> 
>>> On Thu, Jun 9, 2011 at 19:32, Michael Hunger
>>>  wrote:
 But you're not trying to run Neo4j in the gwt client side code but rather 
 on the server?
 
 How exactly do you start-up your application?
 
 The classpath you supplied is imho the build-classpath and not necessarily 
 the run-classpath? Can you verify that?
 
 you can get the runtime classpath by using jsp to determine the pid of 
 your java process and jinfo  to extract the information.
 
 Cheers
 
 Michael
 
 Am 10.06.2011 um 01:20 schrieb Ian Bussières:
 
> Thanks for the quick answer, here's the config :
> 
> JVM 1.6.0_24
> 
> I am compiling through GWT, which might somewhat impact the build,
> although I doubt it.
> 
> Classpath, which answers some of your questions itself :
> 
> 
> 
>   
>   
>   
>    path="com.google.gwt.eclipse.core.GWT_CONTAINER"/>
>    path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
>    path="lib/geronimo-jta_1.1_spec-1.1.1.jar"/>
>   
>   
>   
>    sourcepath="C:/Users/Ian/.m2/repository/org/neo4j/neo4j-kernel/1.4.M03/neo4j-kernel-1.4.M03-sources.jar"/>
>    path="lib/neo4j-lucene-index-1.4.M03.jar"/>
>   
>   
>    path="lib/org.apache.servicemix.bundles.jline-0.9.94_1.jar"/>
>   
>  //
> also tried 3.1.0

Re: [Neo4j] WebAdmin executing bad requests

[Tatham Oddie]

Hi Jim,

The REST API returns a 201 when creating a node.

It should be noted that the URLs returned from the REST API are all absolute 
('self' references, etc). My understanding is that this is the expected 
behaviour.


-- Tatham


-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
Behalf Of Jim Webber
Sent: Tuesday, 7 June 2011 10:25 PM
To: Neo4j user discussions
Subject: Re: [Neo4j] WebAdmin executing bad requests

G'day Tatham,

Just to prune the search tree a bit. Can you bring up your instance and try to 
interact with it via curl? That way if it succeeds we know we have a Webadmin 
problem, or if it fails it's likely we have a config to debug.

Give this a shot:

curl -X POST -H Accept:application/json -H Content-Type:application/json -d 
'{"name":"Shane Warne"}' -v localhost:5105/node

And let us know if it succeeds with a 201 response.

Jim
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Re: [Neo4j] No index provider 'lucene' found

[Ian Bussières]

New buildpath, same problem.

C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
Files 
(x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
Files 
(x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
Files 
(x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
Files 
(x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar



On Thu, Jun 9, 2011 at 20:32, Michael Hunger
 wrote:
> Can you please try to remove the lucene-core-3.0.1. It is possible that 
> mixing two versions of lucene at the classpath messes things up.
>
> Cheers
>
> Michael
>
> Am 10.06.2011 um 02:27 schrieb Ian Bussières:
>
>> Definitely on server side code.
>>
>> I start up the application directly in eclipse with the built in web server.
>>
>> C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
>> Files 
>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
>> Files 
>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
>> Files 
>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
>> Files 
>> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.0.1.jar
>>
>>
>>
>>
>> On Thu, Jun 9, 2011 at 19:32, Michael Hunger
>>  wrote:
>>> But you're not trying to run Neo4j in the gwt client side code but rather 
>>> on the server?
>>>
>>> How exactly do you start-up your application?
>>>
>>> The classpath you supplied is imho the build-classpath and not necessarily 
>>> the run-classpath? Can you verify that?
>>>
>>> you can get the runtime classpath by using jsp to determine the pid of your 
>>> java process and jinfo  to extract the information.
>>>
>>> Cheers
>>>
>>> Michael
>>>
>>> Am 10.06.2011 um 01:20 schrieb Ian Bussières:
>>>
 Thanks for the quick answer, here's the config :

 JVM 1.6.0_24

 I am compiling through GWT, which might somewhat impact the build,
 although I doubt it.

 Classpath, which answers some of your questions itself :

 
 
       
       
       
       >>> path="com.google.gwt.eclipse.core.GWT_CONTAINER"/>
       >>> path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
       >>> path="lib/geronimo-jta_1.1_spec-1.1.1.jar"/>
       
       
       
       >>> sourcepath="C:/Users/Ian/.m2/repository/org/neo4j/neo4j-kernel/1.4.M03/neo4j-kernel-1.4.M03-sources.jar"/>
       >>> path="lib/neo4j-lucene-index-1.4.M03.jar"/>
       
       
       >>> path="lib/org.apache.servicemix.bundles.jline-0.9.94_1.jar"/>
       
          //
 also tried 3.1.0
       
 



 On Thu, Jun 9, 2011 at 19:07, Tobias Ivarsson
  wrote:
> Hi Ian,
>
> Is neo4j-lucene-index-${version}.jar on the classpath?
> That is the jar file that contains the lucene integration for Neo4j, this
> needs to be on the classpath along with lucene-core.
>
> If it is, and things are still not working, could you please answer these
> questions:
> Which version of Neo4j are you using?
> Which JVM are you using?
>>

Re: [Neo4j] No index provider 'lucene' found

[Michael Hunger]

Can you please try to remove the lucene-core-3.0.1. It is possible that mixing 
two versions of lucene at the classpath messes things up.

Cheers

Michael

Am 10.06.2011 um 02:27 schrieb Ian Bussières:

> Definitely on server side code.
> 
> I start up the application directly in eclipse with the built in web server.
> 
> C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
> Files 
> (x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.0.1.jar
> 
> 
> 
> 
> On Thu, Jun 9, 2011 at 19:32, Michael Hunger
>  wrote:
>> But you're not trying to run Neo4j in the gwt client side code but rather on 
>> the server?
>> 
>> How exactly do you start-up your application?
>> 
>> The classpath you supplied is imho the build-classpath and not necessarily 
>> the run-classpath? Can you verify that?
>> 
>> you can get the runtime classpath by using jsp to determine the pid of your 
>> java process and jinfo  to extract the information.
>> 
>> Cheers
>> 
>> Michael
>> 
>> Am 10.06.2011 um 01:20 schrieb Ian Bussières:
>> 
>>> Thanks for the quick answer, here's the config :
>>> 
>>> JVM 1.6.0_24
>>> 
>>> I am compiling through GWT, which might somewhat impact the build,
>>> although I doubt it.
>>> 
>>> Classpath, which answers some of your questions itself :
>>> 
>>> 
>>> 
>>>   
>>>   
>>>   
>>>   >> path="com.google.gwt.eclipse.core.GWT_CONTAINER"/>
>>>   >> path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
>>>   >> path="lib/geronimo-jta_1.1_spec-1.1.1.jar"/>
>>>   
>>>   
>>>   
>>>   >> sourcepath="C:/Users/Ian/.m2/repository/org/neo4j/neo4j-kernel/1.4.M03/neo4j-kernel-1.4.M03-sources.jar"/>
>>>   
>>>   
>>>   
>>>   >> path="lib/org.apache.servicemix.bundles.jline-0.9.94_1.jar"/>
>>>   
>>>  //
>>> also tried 3.1.0
>>>   
>>> 
>>> 
>>> 
>>> 
>>> On Thu, Jun 9, 2011 at 19:07, Tobias Ivarsson
>>>  wrote:
 Hi Ian,
 
 Is neo4j-lucene-index-${version}.jar on the classpath?
 That is the jar file that contains the lucene integration for Neo4j, this
 needs to be on the classpath along with lucene-core.
 
 If it is, and things are still not working, could you please answer these
 questions:
 Which version of Neo4j are you using?
 Which JVM are you using?
 What else do you have in your system that impacts the runtime environment
 (e.g. OSGi)?
 And also provide the full classpath you are using.
 
 Cheers,
 Tobias
 
 2011/6/10 Ian Bussières 
 
> Hello,
> 
> I'm getting an error I cannot seem to repair.
> 
> Here's the line of code popping up the error :
> 
> private static Index people = index.forNodes( "people" );
> 
> I've checked my classpath and tried with both lucene-core-3.1.0.jar
> and lucene-core-3.0.1.jar.
> 
> Stack trace follows, thanks for any indications here !
> 
> Ian.
> 
> java.lang.ExceptionInInitializerError
>at
> webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
>at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>at java.lang.Class.newInstance0(Class.java:355)
>at java.lang.Class.newInstance(Class.java:308)
>at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
>at
> org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
>at
> o

Re: [Neo4j] No index provider 'lucene' found

[Ian Bussières]

Definitely on server side code.

I start up the application directly in eclipse with the built in web server.

C:\Users\Ian\Dev\PFE\pfe\src;C:\Users\Ian\Dev\PFE\pfe\lib;C:\Users\Ian\Dev\PFE\pfe\test-classes;C:\Users\Ian\Dev\PFE\pfe\war\WEB-INF\classes;C:\Program
Files 
(x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-user.jar;C:\Program
Files 
(x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\gwt-dev.jar;C:\Program
Files 
(x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA-sources.jar;C:\Program
Files 
(x86)\Eclipse\plugins\com.google.gwt.eclipse.sdkbundle_2.3.0.r36v201104261928\gwt-2.3.0\validation-api-1.0.0.GA.jar;C:\Users\Ian\Dev\PFE\pfe\lib\geronimo-jta_1.1_spec-1.1.1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-community-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-graph-algo-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-jmx-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-kernel-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-lucene-index-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.1.0.jar;C:\Users\Ian\Dev\PFE\pfe\lib\org.apache.servicemix.bundles.jline-0.9.94_1.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-shell-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\neo4j-udc-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\server-api-1.4.M03.jar;C:\Users\Ian\Dev\PFE\pfe\lib\lucene-core-3.0.1.jar




On Thu, Jun 9, 2011 at 19:32, Michael Hunger
 wrote:
> But you're not trying to run Neo4j in the gwt client side code but rather on 
> the server?
>
> How exactly do you start-up your application?
>
> The classpath you supplied is imho the build-classpath and not necessarily 
> the run-classpath? Can you verify that?
>
> you can get the runtime classpath by using jsp to determine the pid of your 
> java process and jinfo  to extract the information.
>
> Cheers
>
> Michael
>
> Am 10.06.2011 um 01:20 schrieb Ian Bussières:
>
>> Thanks for the quick answer, here's the config :
>>
>> JVM 1.6.0_24
>>
>> I am compiling through GWT, which might somewhat impact the build,
>> although I doubt it.
>>
>> Classpath, which answers some of your questions itself :
>>
>> 
>> 
>>       
>>       
>>       
>>       > path="com.google.gwt.eclipse.core.GWT_CONTAINER"/>
>>       > path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
>>       
>>       
>>       
>>       
>>       > sourcepath="C:/Users/Ian/.m2/repository/org/neo4j/neo4j-kernel/1.4.M03/neo4j-kernel-1.4.M03-sources.jar"/>
>>       
>>       
>>       
>>       > path="lib/org.apache.servicemix.bundles.jline-0.9.94_1.jar"/>
>>       
>>          //
>> also tried 3.1.0
>>       
>> 
>>
>>
>>
>> On Thu, Jun 9, 2011 at 19:07, Tobias Ivarsson
>>  wrote:
>>> Hi Ian,
>>>
>>> Is neo4j-lucene-index-${version}.jar on the classpath?
>>> That is the jar file that contains the lucene integration for Neo4j, this
>>> needs to be on the classpath along with lucene-core.
>>>
>>> If it is, and things are still not working, could you please answer these
>>> questions:
>>> Which version of Neo4j are you using?
>>> Which JVM are you using?
>>> What else do you have in your system that impacts the runtime environment
>>> (e.g. OSGi)?
>>> And also provide the full classpath you are using.
>>>
>>> Cheers,
>>> Tobias
>>>
>>> 2011/6/10 Ian Bussières 
>>>
 Hello,

 I'm getting an error I cannot seem to repair.

 Here's the line of code popping up the error :

 private static Index people = index.forNodes( "people" );

 I've checked my classpath and tried with both lucene-core-3.1.0.jar
 and lucene-core-3.0.1.jar.

 Stack trace follows, thanks for any indications here !

 Ian.

 java.lang.ExceptionInInitializerError
        at
 webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
 Method)
        at
 sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at
 sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at java.lang.Class.newInstance0(Class.java:355)
        at java.lang.Class.newInstance(Class.java:308)
        at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
        at
 org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
        at
 org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:463)
        at
 org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
        at
 org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at
 org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at
 org.mortbay.jetty.handler.ContextHandler.handle(C

[Neo4j] basic design question

[Boris Kizelshteyn]

Hi All,

Noob question here:

Say that I am a node on the graph as are 3 of my other friends. No let's say
that ice cream is a node and pizza is a node. Two of us like pizza, where
like is the relationship (edge), and 3 of us like ice cream. I would like to
know who likes ice cream and who likes pizza given just the people nodes.
The ultimate goal is to determine who like the same things I do. What is the
best way to do this?

Currently I can accomplish what I'm looking for by getting all the
relationships from each of the nodes and seeing where they lead and then
seeing if these nodes are the same as mine. But it would seem that there may
be a better way, like something that takes two (n) nodes and shows all the
common relationship endpoints. Seems like this should be possible with
paths, but I can't seem to figure it out.

Bonus if you can give me an example in REST.

Thanks so much!
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Re: [Neo4j] Gremlin

[Michael Hunger]

Romiko,

the gremlin plugin is currently separate from the Neo4J-Server it will be 
included with one of the next releases.
Until then please go to.
https://github.com/neo4j/neo4j-gremlin-plugin

build the jar using maven and then copy that to your servers plugins directory.

The gremlin file you can see is used for the "console" of the webadmin-UI.

Looking forward to your .net Query Language.

Cheers

Michael

Am 10.06.2011 um 01:46 schrieb Romiko Derbynew:

> Hi,
> 
> I am currently using the latest version of Neo4J. However, when I run:
> curl -v http://localhost:7474/db/data/
> 
> I get this response for extensions:
> "extensions" : {
> }
> 
> And when I look in System\Lib, I can see gremlin-0.9.jar.
> 
> So, how do I register or configure the server to enable gremlin. Since, when 
> I try to query it via:
> 
> http://localhost:7474/db/data/ext/GremlinPlugin/graphdb/execute_script+
> 
> 
> 
> 
> 
> I get no such plugin exists (I also tried to copy the jar file to the plugin 
> folder, and some little voice told me this is not the right way, since it is 
> in the system folder already :))
> 
> 
> 
> Any help is appreciate, I am looking at creating a .Net Query Language for it 
> at some point.
> 
> 
> 
> 
> 
> No such ServerPlugin: "GremlinPlugin"
> 
> org.neo4j.server.plugins.PluginLookupException: No such ServerPlugin: 
> "GremlinPlugin"
> 
>at 
> org.neo4j.server.plugins.PluginManager.extension(PluginManager.java:108)
> 
>at 
> org.neo4j.server.plugins.PluginManager.describe(PluginManager.java:117)
> 
>at 
> org.neo4j.server.rest.web.ExtensionService.describeGraphDatabaseExtension(ExtensionService.java:287)
> 
>at 
> org.neo4j.server.rest.web.ExtensionService.getGraphDatabaseExtensionDescription(ExtensionService.java:150)
> 
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 
>at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> 
>at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> 
>at java.lang.reflect.Method.invoke(Unknown Source)
> 
> 
> 
> ___
> Neo4j mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user

___
Neo4j mailing list
User@lists.neo4j.org
https://lists.neo4j.org/mailman/listinfo/user

[Neo4j] Gremlin

[Romiko Derbynew]

Hi,

I am currently using the latest version of Neo4J. However, when I run:
curl -v http://localhost:7474/db/data/

I get this response for extensions:
"extensions" : {
}

And when I look in System\Lib, I can see gremlin-0.9.jar.

So, how do I register or configure the server to enable gremlin. Since, when I 
try to query it via:

http://localhost:7474/db/data/ext/GremlinPlugin/graphdb/execute_script+





I get no such plugin exists (I also tried to copy the jar file to the plugin 
folder, and some little voice told me this is not the right way, since it is in 
the system folder already :))



Any help is appreciate, I am looking at creating a .Net Query Language for it 
at some point.





No such ServerPlugin: "GremlinPlugin"

org.neo4j.server.plugins.PluginLookupException: No such ServerPlugin: 
"GremlinPlugin"

at 
org.neo4j.server.plugins.PluginManager.extension(PluginManager.java:108)

at 
org.neo4j.server.plugins.PluginManager.describe(PluginManager.java:117)

at 
org.neo4j.server.rest.web.ExtensionService.describeGraphDatabaseExtension(ExtensionService.java:287)

at 
org.neo4j.server.rest.web.ExtensionService.getGraphDatabaseExtensionDescription(ExtensionService.java:150)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)



___
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Re: [Neo4j] No index provider 'lucene' found

[Michael Hunger]

But you're not trying to run Neo4j in the gwt client side code but rather on 
the server?

How exactly do you start-up your application?

The classpath you supplied is imho the build-classpath and not necessarily the 
run-classpath? Can you verify that?

you can get the runtime classpath by using jsp to determine the pid of your 
java process and jinfo  to extract the information.

Cheers

Michael

Am 10.06.2011 um 01:20 schrieb Ian Bussières:

> Thanks for the quick answer, here's the config :
> 
> JVM 1.6.0_24
> 
> I am compiling through GWT, which might somewhat impact the build,
> although I doubt it.
> 
> Classpath, which answers some of your questions itself :
> 
> 
> 
>   
>   
>   
>path="com.google.gwt.eclipse.core.GWT_CONTAINER"/>
>path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
>   
>   
>   
>   
>sourcepath="C:/Users/Ian/.m2/repository/org/neo4j/neo4j-kernel/1.4.M03/neo4j-kernel-1.4.M03-sources.jar"/>
>   
>   
>   
>path="lib/org.apache.servicemix.bundles.jline-0.9.94_1.jar"/>
>   
>  //
> also tried 3.1.0
>   
> 
> 
> 
> 
> On Thu, Jun 9, 2011 at 19:07, Tobias Ivarsson
>  wrote:
>> Hi Ian,
>> 
>> Is neo4j-lucene-index-${version}.jar on the classpath?
>> That is the jar file that contains the lucene integration for Neo4j, this
>> needs to be on the classpath along with lucene-core.
>> 
>> If it is, and things are still not working, could you please answer these
>> questions:
>> Which version of Neo4j are you using?
>> Which JVM are you using?
>> What else do you have in your system that impacts the runtime environment
>> (e.g. OSGi)?
>> And also provide the full classpath you are using.
>> 
>> Cheers,
>> Tobias
>> 
>> 2011/6/10 Ian Bussières 
>> 
>>> Hello,
>>> 
>>> I'm getting an error I cannot seem to repair.
>>> 
>>> Here's the line of code popping up the error :
>>> 
>>> private static Index people = index.forNodes( "people" );
>>> 
>>> I've checked my classpath and tried with both lucene-core-3.1.0.jar
>>> and lucene-core-3.0.1.jar.
>>> 
>>> Stack trace follows, thanks for any indications here !
>>> 
>>> Ian.
>>> 
>>> java.lang.ExceptionInInitializerError
>>>at
>>> webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
>>>at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
>>> Method)
>>>at
>>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>>>at
>>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>>>at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>>>at java.lang.Class.newInstance0(Class.java:355)
>>>at java.lang.Class.newInstance(Class.java:308)
>>>at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
>>>at
>>> org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
>>>at
>>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:463)
>>>at
>>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
>>>at
>>> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>>>at
>>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>>>at
>>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
>>>at
>>> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>>>at
>>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>>>at
>>> org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
>>>at
>>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>>>at org.mortbay.jetty.Server.handle(Server.java:324)
>>>at
>>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>>>at
>>> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
>>>at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
>>>at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>>>at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>>>at
>>> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
>>>at
>>> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
>>> Caused by: java.lang.IllegalArgumentException: No index provider 'lucene'
>>> found
>>>at
>>> org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:69)
>>>at
>>> org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:109)
>>>at
>>> org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:171)
>>>at
>>> org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:242)
>>>at
>>> business.domain.DomainServicesImpl.(DomainServicesImpl

Re: [Neo4j] No index provider 'lucene' found

[Ian Bussières]

Thanks for the quick answer, here's the config :

JVM 1.6.0_24

I am compiling through GWT, which might somewhat impact the build,
although I doubt it.

Classpath, which answers some of your questions itself :


















   //
also tried 3.1.0





On Thu, Jun 9, 2011 at 19:07, Tobias Ivarsson
 wrote:
> Hi Ian,
>
> Is neo4j-lucene-index-${version}.jar on the classpath?
> That is the jar file that contains the lucene integration for Neo4j, this
> needs to be on the classpath along with lucene-core.
>
> If it is, and things are still not working, could you please answer these
> questions:
> Which version of Neo4j are you using?
> Which JVM are you using?
> What else do you have in your system that impacts the runtime environment
> (e.g. OSGi)?
> And also provide the full classpath you are using.
>
> Cheers,
> Tobias
>
> 2011/6/10 Ian Bussières 
>
>> Hello,
>>
>> I'm getting an error I cannot seem to repair.
>>
>> Here's the line of code popping up the error :
>>
>> private static Index people = index.forNodes( "people" );
>>
>> I've checked my classpath and tried with both lucene-core-3.1.0.jar
>> and lucene-core-3.0.1.jar.
>>
>> Stack trace follows, thanks for any indications here !
>>
>> Ian.
>>
>> java.lang.ExceptionInInitializerError
>>        at
>> webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
>>        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
>> Method)
>>        at
>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>>        at
>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>>        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>>        at java.lang.Class.newInstance0(Class.java:355)
>>        at java.lang.Class.newInstance(Class.java:308)
>>        at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
>>        at
>> org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
>>        at
>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:463)
>>        at
>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
>>        at
>> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>>        at
>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>>        at
>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
>>        at
>> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>>        at
>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>>        at
>> org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
>>        at
>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>>        at org.mortbay.jetty.Server.handle(Server.java:324)
>>        at
>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>>        at
>> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
>>        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
>>        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>>        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>>        at
>> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
>>        at
>> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
>> Caused by: java.lang.IllegalArgumentException: No index provider 'lucene'
>> found
>>        at
>> org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:69)
>>        at
>> org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:109)
>>        at
>> org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:171)
>>        at
>> org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:242)
>>        at
>> business.domain.DomainServicesImpl.(DomainServicesImpl.java:29)
>>        ... 26 more
>> [WARN] Nested in java.lang.ExceptionInInitializerError:
>> java.lang.IllegalArgumentException: No index provider 'lucene' found
>>        at
>> org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:69)
>>        at
>> org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:109)
>>        at
>> org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:171)
>>        at
>> org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:242)
>>        at
>> business.domain.DomainServicesImpl.(DomainServicesImpl.java:29)
>>        at
>> webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
>>        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
>> Method)
>>        at
>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeCo

Re: [Neo4j] No index provider 'lucene' found

[Tobias Ivarsson]

Hi Ian,

Is neo4j-lucene-index-${version}.jar on the classpath?
That is the jar file that contains the lucene integration for Neo4j, this
needs to be on the classpath along with lucene-core.

If it is, and things are still not working, could you please answer these
questions:
Which version of Neo4j are you using?
Which JVM are you using?
What else do you have in your system that impacts the runtime environment
(e.g. OSGi)?
And also provide the full classpath you are using.

Cheers,
Tobias

2011/6/10 Ian Bussières 

> Hello,
>
> I'm getting an error I cannot seem to repair.
>
> Here's the line of code popping up the error :
>
> private static Index people = index.forNodes( "people" );
>
> I've checked my classpath and tried with both lucene-core-3.1.0.jar
> and lucene-core-3.0.1.jar.
>
> Stack trace follows, thanks for any indications here !
>
> Ian.
>
> java.lang.ExceptionInInitializerError
>at
> webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
>at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>at java.lang.Class.newInstance0(Class.java:355)
>at java.lang.Class.newInstance(Class.java:308)
>at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
>at
> org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
>at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:463)
>at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
>at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
>at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>at
> org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
>at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>at org.mortbay.jetty.Server.handle(Server.java:324)
>at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>at
> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
>at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
>at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
>at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
> Caused by: java.lang.IllegalArgumentException: No index provider 'lucene'
> found
>at
> org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:69)
>at
> org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:109)
>at
> org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:171)
>at
> org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:242)
>at
> business.domain.DomainServicesImpl.(DomainServicesImpl.java:29)
>... 26 more
> [WARN] Nested in java.lang.ExceptionInInitializerError:
> java.lang.IllegalArgumentException: No index provider 'lucene' found
>at
> org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:69)
>at
> org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:109)
>at
> org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:171)
>at
> org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:242)
>at
> business.domain.DomainServicesImpl.(DomainServicesImpl.java:29)
>at
> webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
>at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
>at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
>at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
>at java.lang.Class.newInstance0(Class.java:355)
>at java.lang.Class.newInstance(Class.java:308)
>at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
>at
> org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
>at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHold

[Neo4j] No index provider 'lucene' found

[Ian Bussières]

Hello,

I'm getting an error I cannot seem to repair.

Here's the line of code popping up the error :

private static Index people = index.forNodes( "people" );

I've checked my classpath and tried with both lucene-core-3.1.0.jar
and lucene-core-3.0.1.jar.

Stack trace follows, thanks for any indications here !

Ian.

java.lang.ExceptionInInitializerError
at webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
at 
org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:463)
at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
at 
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at 
org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at 
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at 
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at 
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at 
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
Caused by: java.lang.IllegalArgumentException: No index provider 'lucene' found
at 
org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:69)
at 
org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:109)
at 
org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:171)
at org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:242)
at 
business.domain.DomainServicesImpl.(DomainServicesImpl.java:29)
... 26 more
[WARN] Nested in java.lang.ExceptionInInitializerError:
java.lang.IllegalArgumentException: No index provider 'lucene' found
at 
org.neo4j.kernel.IndexManagerImpl.getIndexProvider(IndexManagerImpl.java:69)
at 
org.neo4j.kernel.IndexManagerImpl.findIndexConfig(IndexManagerImpl.java:109)
at 
org.neo4j.kernel.IndexManagerImpl.getOrCreateIndexConfig(IndexManagerImpl.java:171)
at org.neo4j.kernel.IndexManagerImpl.forNodes(IndexManagerImpl.java:242)
at 
business.domain.DomainServicesImpl.(DomainServicesImpl.java:29)
at webapp.server.AccountServiceImpl.(AccountServiceImpl.java:20)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
at 
org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:463)
at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
at 
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at 
org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
at 
org.mortbay.jetty.

[Neo4j] Interesting Neo4J design question...unidirectional "relationships"

[Rick Bullotta]

We seem to be encountering a lot of issues when attempting to do lots of 
reads/writes/deletes of nodes in a "collection" scenario, where the members of 
the collection (each a node w/properties) are linked to their collection (also 
a node) via a relationship.  This creates a hot spot and concurrency issue 
apparently, which has led to some unpredictable performance.  In this specific 
use case, the relationship is only meaningful in one direction, so I am 
considering creating a property on the members of type long, which corresponds 
to the node id of the collection node.  This would seem to work, and would 
likely avoid the issues we're encountering, but it makes me feel a bit "dirty" 
to do so in a graph database.

Any other suggestions?  Any other workarounds for the issues with frequent 
updates to a node and its relationships?

Many thanks,

Rick

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Re: [Neo4j] neo4j and GUI

[Michael Hunger]

No,

Neoclipse is a standalone application.

There are lots of other visualizations for graphs possible: 
http://wiki.neo4j.org/content/Visualization_options_for_graphs
Cheers

Michael
Am 09.06.2011 um 23:46 schrieb lakel:

> hello;
> 
> I have developed with JBuilder
> I can import into JBuilder neoclipse for display my hierarchy !
> 
> thank you.
> 
> --
> View this message in context: 
> http://neo4j-user-list.438527.n3.nabble.com/neo4j-and-GUI-tp3045627p3046218.html
> Sent from the Neo4J User List mailing list archive at Nabble.com.
> ___
> Neo4j mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user

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Re: [Neo4j] neo4j and GUI

[lakel]

hello;

I have developed with JBuilder
 I can import into JBuilder neoclipse for display my hierarchy !

thank you.

--
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[Neo4j] Building neo4jpy for JCC in windows

[oguerrer]

Hi,

I am trying to build the latest version of neo4jpy for JCC in windows. I
have successfully installed JCC but I keep getting the following error:


LINK : fatal error LNK1181: cannot open input file
'C:\Python26\lib\site-package 
s\jcc-2.8-py2.6-win32.egg\jcc\jcc_d.lib' 
error: command '"C:\Program Files\Microsoft Visual Studio
9.0\VC\BIN\link.exe"' 
failed with exit status 1181 

I just don't find the jcc_d.lib file anywhere.


Any ideas?

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Re: [Neo4j] Incompatible batch inserted data with Python bindings

[oguerrer]

Thank you Aaron,

I am trying to build the the latest bindings but I get an error regarding a
file called: jcc_d.lib

I installed jcc successfully and I have the  Visual Studio Compilers of
2008. The error I get is:

LINK : fatal error LNK1181: cannot open input file
'C:\Python26\lib\site-package
s\jcc-2.8-py2.6-win32.egg\jcc\jcc_d.lib'
error: command '"C:\Program Files\Microsoft Visual Studio
9.0\VC\BIN\link.exe"'
failed with exit status 1181

Any idea?

--
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Re: [Neo4j] Speeding up initial import of graph

[Michael Hunger]

Please keep in mind that the HashMap of 10M strings -> longs will take a 
substantial amount of heap memory.
That's not the fault of Neo4j :) On my system it alone takes 1.8 G of memory 
(distributed across the strings, the hashmap-entries and the longs).
So 3 GB of heap are sensible to run this, that leaves about 1G for neo4j + its 
caches.

Of course you're free to shard you map (e.g. by first letter of the name) and 
persist those maps to disk and reload them if needed. But that's an application 
level concern.
If your are really limited that way wrt memory you should try Chris Giorans 
implementation which will take care of that. Or you should perhaps use an 
amazon ec2 instance which you can easily get with up to 68 G of RAM :)

Cheers

Michael


P.S. As a side-note:
For the rest of the memory:
Have you tried to use weak reference cache instead of the default soft one?
in your config.properties add
cache_type = weak
that should take care of your memory problems (and the stopping which is 
actually the GC trying to reclaim memory).

Am 09.06.2011 um 22:36 schrieb Paul Bandler:

> I ran Michael’s  example test import program with the Map replacing the index 
> on my on more modestly configured machine to see whether the import scaling 
> problems I have reported previously using Batchinserter were reproduced.  
> They were – I gave the program 1G of heap and watched it run using jconsole.  
> It ran reasonably quickly as it consumed the in an almost straight line until 
> it neared its capacity then practically stopped for about 20 minutes after 
> which it died with an out of memory error – see below.
> 
> Now I’m not saying that Neo4j should necessarily go out of its way to support 
> very memory constrained environments, but I do think that it is not 
> unreasonable to expect its batch import mechanism not to fall over in this 
> way but should rather flush its buffers or whatever without requiring the 
> import application writer to shut it down and restart it periodically...
> 
> Creating data took 331 seconds
> 100 nodes created. Took 29001
> 200 nodes created. Took 35107
> 300 nodes created. Took 35904
> 400 nodes created. Took 66169
> 500 nodes created. Took 63280
> 600 nodes created. Took 183922
> 700 nodes created. Took 258276
> 
> com.nomura.smo.rdm.neo4j.restore.Hepper
> createData(330.364seconds)
> runImport (1,485 seconds later...)
> java.lang.OutOfMemoryError: Java heap space
>at java.util.ArrayList.(Unknown Source)
>at java.util.ArrayList.(Unknown Source)
>at 
> org.neo4j.kernel.impl.nioneo.store.PropertyRecord.(PropertyRecord.java:33)
>at 
> org.neo4j.kernel.impl.batchinsert.BatchInserterImpl.createPropertyChain(BatchInserterImpl.java:425)
>at 
> org.neo4j.kernel.impl.batchinsert.BatchInserterImpl.createNode(BatchInserterImpl.java:143)
>at com.nomura.smo.rdm.neo4j.restore.Hepper.runImport(Hepper.java:61)
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>at java.lang.reflect.Method.invoke(Unknown Source)
>at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
>at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
>at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
>at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
>at 
> org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
>at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
>at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
>at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
>at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
>at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
>at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
>at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
>at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
>at 
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
>at 
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
>at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
>at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
>at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
> 
> 
> Rega

Re: [Neo4j] Design question: Del.icio.us

[Michael Hunger]

Aseem,

Josef's suggestion is pretty cool and very powerful.

I would start simple by modeling the bookmark as a node and have the tag-events 
only being 
relationships (with properties) from the actual tag to the bookmark node.

In the end it all depends on your usage scenarios. What kind of functionality 
do you want to support with your graph. 
Btw. you can also start simple and later evolve your graph by upgrading 
relationships to nodes.

Your worries about duplicate tag edges being inserted can be dealt with by 
checking that no path 
containing that user, resource and tag exists using a traverser (you could also 
index the tag event with a user_tag_resource key).
It might be necessary to add some properties to relationships or use the 
suggested aggregation relationships to optimize the
traversal.

Starting with M04 this should also be expressable with our query language 
cypher.

start user=(users,name,"username"), tag=(tags,name,"tagname"), 
url=(urls,link,"uri")
match 
   user - tagged -> tag_event, 
   tag - tagged -> tag_event, 
   tag_event -> tagged -> url
return tag_event

Am 09.06.2011 um 22:10 schrieb Aseem Kishore:

> Thanks for the input, Michael and Josef!
> 
> I'm intrigued by the possibility of being able to have comment threads, etc.
> when you consider a tagging action as an event, and thus consider it a node
> in the graph.
> 
> I'm worried though about having the duplicate edges. How do you make sure
> everything remains consistent? If I delete a tag, do you delete the node for
> the previous tag event too? Or just the edge? If you delete the node too,
> that deletes the comment thread too then?
> 
> Some great food for thought. Let me chew on this a bit more and get back to
> you guys. Thanks again,
> 
> Aseem
> 
> On Thu, Jun 9, 2011 at 1:55 AM, Josef Holy  wrote:
> 
>> 
>> Hi,
>> 
>> few notes from the top of my head on how we modeled this in the past:
>> 
>> User is a Node
>> Resource (Document) is a Node
>> Tag is a Node (having a label, language property, can be connected via
>> relationships to other Tag Nodes representing its synonyms, can become a
>> concept in (tree-)structured thesauri, etc...)
>> 
>> Scenario: User U tags Resource R with Tag T:
>> - Create special 'TaggingEvent' TE Node, with timestamp property and
>> connect it to U, R and T by creating [TE, U], [TE, R] and [TE, T]
>> relationships
>> - TE nodes are indexed by timestamp, allowing to easily generate 'Tag
>> activity streams' for different contexts - for users, resources or even tags
>> (if it makes sense)
>> - create some additional relationship(s) as needed between [U, T], [U, R]
>> and [T, R] to simplify graph traversals and also to aggregate/cache the
>> information like 'how many times was given R tagged with given T ~ this is
>> f.e. expressed by some 'weight' property on the [T,R] relationship - and
>> comes handy for generating things like tag clouds (~ get all [T,R]
>> relationships with their weights)
>> 
>> Scenario: User U bookmarks Resource R:
>> - here it may be enough to create only [U,R] relationship with properties
>> like timestamp, but we followed similar model as above - create special
>> 'BookmarkEvent' Node BE, with timestamp and ralationships [BE, U] and  [BE,
>> R] and [U,R]
>> - this again allows to easily create bookmarking activity streams, or to
>> mix tagging+bookmarking events into one stream, if there is a requirement to
>> do so.
>> 
>> 
>> That's about it.
>> 
>> Hope this helps.
>> 
>> 
>> Regards,
>> 
>> Josef.
>> 
>> --
>> www.subject.cz
>> 
>> __
>>> Od: "Max De Marzi Jr." 
>>> Komu: Neo4j user discussions 
>>> Datum: 09.06.2011 08:21
>>> Předmět: Re: [Neo4j] Design question: Del.icio.us
>>> 
>>> Aseem,
>>> 
>>> Which users tagged what? SELECT DISTINCT user_id FROM USER_TAGS WHERE
>>> bookmark_id = x
>>> Which bookmarks did a user tag? SELECT DISTINCT bookmark_id FROM
>>> USER_TAGS WHERE user_id = x
>>> Which bookmarks were tagged with x? SELECT DISTINCT bookmark_id FROM
>>> USER_TAGS WHERE tag_id = x
>>> 
>>> What question are you trying to answer that you can't get from a
>>> relational table?
>>> 
>>> I think it's better to make your model depending on the questions you
>>> are trying to answer.
>>> 
>>> I have a similar model (users tagging users) and I needed to answer:
>>> Which users have been tagged by me or my network 6 degrees out?
>>> What is the tagged distance a user is away from another user?
>>> 
>>> Turns out, all I needed was User nodes with Tagged links.  User ->
>>> tagged -> User -> tagged -> User
>>> Everything else I get from the relational db.
>>> 
>>> When I start to care about which users have been tagged for by me or
>>> my network 6 degrees out for this KEYWORD, then I'll create a more
>>> complex model:
>>> User -> UserKeyword -> tagged -> UserKeyword -> User
>>>   Keyword  ---/Keyword  ---/
>>> 
>>> Regards,
>>> Max
>>> 
>>> On Thu, Jun 9, 2011 at 12:33 AM

Re: [Neo4j] Speeding up initial import of graph

[Paul Bandler]

I ran Michael’s  example test import program with the Map replacing the index 
on my on more modestly configured machine to see whether the import scaling 
problems I have reported previously using Batchinserter were reproduced.  They 
were – I gave the program 1G of heap and watched it run using jconsole.  It ran 
reasonably quickly as it consumed the in an almost straight line until it 
neared its capacity then practically stopped for about 20 minutes after which 
it died with an out of memory error – see below.
 
Now I’m not saying that Neo4j should necessarily go out of its way to support 
very memory constrained environments, but I do think that it is not 
unreasonable to expect its batch import mechanism not to fall over in this way 
but should rather flush its buffers or whatever without requiring the import 
application writer to shut it down and restart it periodically...
 
Creating data took 331 seconds
100 nodes created. Took 29001
200 nodes created. Took 35107
300 nodes created. Took 35904
400 nodes created. Took 66169
500 nodes created. Took 63280
600 nodes created. Took 183922
700 nodes created. Took 258276
 
com.nomura.smo.rdm.neo4j.restore.Hepper
createData(330.364seconds)
runImport (1,485 seconds later...)
java.lang.OutOfMemoryError: Java heap space
at java.util.ArrayList.(Unknown Source)
at java.util.ArrayList.(Unknown Source)
at 
org.neo4j.kernel.impl.nioneo.store.PropertyRecord.(PropertyRecord.java:33)
at 
org.neo4j.kernel.impl.batchinsert.BatchInserterImpl.createPropertyChain(BatchInserterImpl.java:425)
at 
org.neo4j.kernel.impl.batchinsert.BatchInserterImpl.createNode(BatchInserterImpl.java:143)
at com.nomura.smo.rdm.neo4j.restore.Hepper.runImport(Hepper.java:61)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at 
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at 
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at 
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at 
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at 
org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at 
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at 
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at 
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
 
 
Regards,
Paul Bandler 
On 9 Jun 2011, at 12:27, Michael Hunger wrote:

> I recreated Daniels code in Java, mainly because some things were missing 
> from his scala example.
> 
> You're right that the index is the bottleneck. But with your small data set 
> it should be possible to cache the 10m nodes in a heap that fits in your 
> machine.
> 
> I ran it first with the index and had about 8 seconds / 1M nodes and 320 
> sec/1M rels.
> 
> Then I switched to 3G heap and a HashMap to keep the name=>node lookup and it 
> went to 2s/1M nodes and 13 down-to 3 sec for 1M rels.
> 
> That is the approach that Chris takes only that his solution can persist the 
> map to disk and is more efficient :)
> 
> Hope that helps.
> 
> Michael
> 
> package org.neo4j.load;
> 
> import org.apache.commons.io.FileUtils;
> import org.junit.Test;
> import org.neo4j.graphdb.RelationshipType;
> import org.neo4j.graphdb.index.BatchInserterIndex;
> import org.neo4j.graphdb.index.BatchInserterIndexProvider;
> import org.neo4j.helpers.collection.MapUtil;
> import org.neo4j.index.impl.lucene.LuceneBatchInserterIndexProvider;
> import org.neo4j.kernel.impl.batchinsert.BatchInserter;
> import org.neo4j.kernel.impl.batchinsert.BatchIns

Re: [Neo4j] neo4j and GUI

[Michael Hunger]

You could use Neoclipse to visualize your graph: 
http://wiki.neo4j.org/content/Neoclipse_Guide

Cheers

Michael
Am 09.06.2011 um 21:49 schrieb lakel:

> hello;
> 
> I created a hierarchy with neo4j and I need to see it in a GUI.
> how i should  to make it with neo4j?
> 
> thank you.
> 
> 
> --
> View this message in context: 
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Re: [Neo4j] Design question: Del.icio.us

[Aseem Kishore]

Thanks for the input, Michael and Josef!

I'm intrigued by the possibility of being able to have comment threads, etc.
when you consider a tagging action as an event, and thus consider it a node
in the graph.

I'm worried though about having the duplicate edges. How do you make sure
everything remains consistent? If I delete a tag, do you delete the node for
the previous tag event too? Or just the edge? If you delete the node too,
that deletes the comment thread too then?

Some great food for thought. Let me chew on this a bit more and get back to
you guys. Thanks again,

Aseem

On Thu, Jun 9, 2011 at 1:55 AM, Josef Holy  wrote:

>
> Hi,
>
> few notes from the top of my head on how we modeled this in the past:
>
> User is a Node
> Resource (Document) is a Node
> Tag is a Node (having a label, language property, can be connected via
> relationships to other Tag Nodes representing its synonyms, can become a
> concept in (tree-)structured thesauri, etc...)
>
> Scenario: User U tags Resource R with Tag T:
> - Create special 'TaggingEvent' TE Node, with timestamp property and
> connect it to U, R and T by creating [TE, U], [TE, R] and [TE, T]
> relationships
> - TE nodes are indexed by timestamp, allowing to easily generate 'Tag
> activity streams' for different contexts - for users, resources or even tags
> (if it makes sense)
> - create some additional relationship(s) as needed between [U, T], [U, R]
> and [T, R] to simplify graph traversals and also to aggregate/cache the
> information like 'how many times was given R tagged with given T ~ this is
> f.e. expressed by some 'weight' property on the [T,R] relationship - and
> comes handy for generating things like tag clouds (~ get all [T,R]
> relationships with their weights)
>
> Scenario: User U bookmarks Resource R:
> - here it may be enough to create only [U,R] relationship with properties
> like timestamp, but we followed similar model as above - create special
> 'BookmarkEvent' Node BE, with timestamp and ralationships [BE, U] and  [BE,
> R] and [U,R]
> - this again allows to easily create bookmarking activity streams, or to
> mix tagging+bookmarking events into one stream, if there is a requirement to
> do so.
>
>
> That's about it.
>
> Hope this helps.
>
>
> Regards,
>
> Josef.
>
> --
> www.subject.cz
>
> __
> > Od: "Max De Marzi Jr." 
> > Komu: Neo4j user discussions 
> > Datum: 09.06.2011 08:21
> > Předmět: Re: [Neo4j] Design question: Del.icio.us
> >
> >Aseem,
> >
> >Which users tagged what? SELECT DISTINCT user_id FROM USER_TAGS WHERE
> >bookmark_id = x
> >Which bookmarks did a user tag? SELECT DISTINCT bookmark_id FROM
> >USER_TAGS WHERE user_id = x
> >Which bookmarks were tagged with x? SELECT DISTINCT bookmark_id FROM
> >USER_TAGS WHERE tag_id = x
> >
> >What question are you trying to answer that you can't get from a
> >relational table?
> >
> >I think it's better to make your model depending on the questions you
> >are trying to answer.
> >
> >I have a similar model (users tagging users) and I needed to answer:
> >Which users have been tagged by me or my network 6 degrees out?
> >What is the tagged distance a user is away from another user?
> >
> >Turns out, all I needed was User nodes with Tagged links.  User ->
> >tagged -> User -> tagged -> User
> >Everything else I get from the relational db.
> >
> >When I start to care about which users have been tagged for by me or
> >my network 6 degrees out for this KEYWORD, then I'll create a more
> >complex model:
> >User -> UserKeyword -> tagged -> UserKeyword -> User
> >Keyword  ---/Keyword  ---/
> >
> >Regards,
> >Max
> >
> >On Thu, Jun 9, 2011 at 12:33 AM, Aseem Kishore 
> wrote:
> >> Also forgot to add: now if you want to show all links (globally) for a
> given
> >> tag, how do you do that? Are you indexing each tag-link (as a key-value
> >> pair) every time a tag is added? Removing from the index every time a
> tag is
> >> deleted?
> >>
> >> Thanks,
> >>
> >> Aseem
> >>
> >> On Wed, Jun 8, 2011 at 10:31 PM, Aseem Kishore  >wrote:
> >>
> >>> I forgot to state this, but a key requirement of tags of course is that
> you
> >>> can apply multiple of them to the same link.
> >>>
> >>> Would you still go that route then?
> >>>
> >>> If you want to delete a link from your bookmarks, it's a matter then of
> >>> deleting each tag edge?
> >>>
> >>> Aseem
> >>>
> >>>
> >>> On Wed, Jun 8, 2011 at 10:28 PM, Siddhartha Kasivajhula <
> >>> countvajh...@gmail.com> wrote:
> >>>
>  Couldn't you use edges for "tags" instead of nodes?
> 
>  user1 --tag--> link1
>  user2 --tag--> link1
>  user1 --tag--> link2
> 
> 
>  On Wed, Jun 8, 2011 at 10:23 PM, Aseem Kishore <
> aseem.kish...@gmail.com
>  >wrote:
> 
>  > Hi guys,
>  >
>  > We're thinking about implementing tags in our system, and we're
>  pondering a
>  > few ideas for how we'd go about it, and none of them seem per

[Neo4j] neo4j and GUI

[lakel]

hello;

I created a hierarchy with neo4j and I need to see it in a GUI.
how i should  to make it with neo4j?

thank you.


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[Neo4j] Open question on Index Framework

[Rick Bullotta]

We really need a way to query a list of all of the terms for a specific 
field/key name.  Any thoughts on how we could extend the Index framework safely 
to do this?
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Re: [Neo4j] Design question: Del.icio.us

[Aseem Kishore]

Max, just to be clear, are you basically saying that this problem is best
solved by a relational db instead of a graph db?

Thanks,
Aseem

On Wed, Jun 8, 2011 at 11:21 PM, Max De Marzi Jr. wrote:

> Aseem,
>
> Which users tagged what? SELECT DISTINCT user_id FROM USER_TAGS WHERE
> bookmark_id = x
> Which bookmarks did a user tag? SELECT DISTINCT bookmark_id FROM
> USER_TAGS WHERE user_id = x
> Which bookmarks were tagged with x? SELECT DISTINCT bookmark_id FROM
> USER_TAGS WHERE tag_id = x
>
> What question are you trying to answer that you can't get from a
> relational table?
>
> I think it's better to make your model depending on the questions you
> are trying to answer.
>
> I have a similar model (users tagging users) and I needed to answer:
> Which users have been tagged by me or my network 6 degrees out?
> What is the tagged distance a user is away from another user?
>
> Turns out, all I needed was User nodes with Tagged links.  User ->
> tagged -> User -> tagged -> User
> Everything else I get from the relational db.
>
> When I start to care about which users have been tagged for by me or
> my network 6 degrees out for this KEYWORD, then I'll create a more
> complex model:
> User -> UserKeyword -> tagged -> UserKeyword -> User
>Keyword  ---/Keyword  ---/
>
> Regards,
> Max
>
> On Thu, Jun 9, 2011 at 12:33 AM, Aseem Kishore 
> wrote:
> > Also forgot to add: now if you want to show all links (globally) for a
> given
> > tag, how do you do that? Are you indexing each tag-link (as a key-value
> > pair) every time a tag is added? Removing from the index every time a tag
> is
> > deleted?
> >
> > Thanks,
> >
> > Aseem
> >
> > On Wed, Jun 8, 2011 at 10:31 PM, Aseem Kishore  >wrote:
> >
> >> I forgot to state this, but a key requirement of tags of course is that
> you
> >> can apply multiple of them to the same link.
> >>
> >> Would you still go that route then?
> >>
> >> If you want to delete a link from your bookmarks, it's a matter then of
> >> deleting each tag edge?
> >>
> >> Aseem
> >>
> >>
> >> On Wed, Jun 8, 2011 at 10:28 PM, Siddhartha Kasivajhula <
> >> countvajh...@gmail.com> wrote:
> >>
> >>> Couldn't you use edges for "tags" instead of nodes?
> >>>
> >>> user1 --tag--> link1
> >>> user2 --tag--> link1
> >>> user1 --tag--> link2
> >>>
> >>>
> >>> On Wed, Jun 8, 2011 at 10:23 PM, Aseem Kishore <
> aseem.kish...@gmail.com
> >>> >wrote:
> >>>
> >>> > Hi guys,
> >>> >
> >>> > We're thinking about implementing tags in our system, and we're
> >>> pondering a
> >>> > few ideas for how we'd go about it, and none of them seem perfect.
> I'd
> >>> like
> >>> > to ask you guys: how would you design an analogous case: Del.icio.us
> ?
> >>> >
> >>> > At the core, *users bookmark links*, so it makes sense to have
> "users"
> >>> and
> >>> > "links" as types of nodes, and "bookmark" as the type of edge that
> >>> connects
> >>> > them. Now, you can see all the links a given user has bookmarked, and
> >>> all
> >>> > the users that have bookmarked a given link.
> >>> >
> >>> > Now users can also *tag* links, of course, but the most interesting
> >>> > requirement is that, when I'm looking at *my links*, I only want to
> see
> >>> *my
> >>> > tags*. Thus, tags can't be tied just to links; they have to be tied
> to
> >>> > users
> >>> > too. But most importantly, you have to maintain *which* user and
> *which*
> >>> > link *each* tag is for.
> >>> >
> >>> > Thus, it seems most intuitive to us if we could have "tags" be nodes
> >>> > that *point
> >>> > to the "bookmark" edges*. Unfortunately, that's a hypergraph, which
> >>> Neo4j
> >>> > doesn't support.
> >>> >
> >>> > We could use intermediate nodes for bookmarks maybe, but that sort of
> >>> sucks
> >>> > to lose the intuitiveness of the graph and introduce redundant edges,
> >>> more
> >>> > complexity which makes consistency harder, etc.
> >>> >
> >>> > We have some other ideas, but I'm curious if any of you guys have
> >>> thought
> >>> > about this already or have done it, or if you guys have thoughts.
> Thanks
> >>> in
> >>> > advance!
> >>> >
> >>> > Aseem
> >>> > ___
> >>> > Neo4j mailing list
> >>> > User@lists.neo4j.org
> >>> > https://lists.neo4j.org/mailman/listinfo/user
> >>> >
> >>> ___
> >>> Neo4j mailing list
> >>> User@lists.neo4j.org
> >>> https://lists.neo4j.org/mailman/listinfo/user
> >>>
> >>
> >>
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Re: [Neo4j] Possible bug/omission in LuceneTimeline?

[Rick Bullotta]

Doh.  Forget it.  Grokking the code a bit and I see how LuceneTimeline is just 
a wrapper around a regular Index.

Nevermind. ;-)

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
Behalf Of Rick Bullotta
Sent: Thursday, June 09, 2011 2:41 PM
To: Neo4j user discussions
Subject: [Neo4j] Possible bug/omission in LuceneTimeline?
Importance: High

One big issue we've encountered (actually, a fairly critical one) is that there 
does not seem to be any way to *delete* a LuceneTimeline index.

This raises a more general question:


-  Is LuceneTimeline part of the IndexFramework or is it an 
"experimental" piece of code

-  Is there a way to achieve the same functionality of the 
LuceneTimeline using the "normal" Neo4J index framework?

Thanks in advance for any help!



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[Neo4j] Possible bug/omission in LuceneTimeline?

[Rick Bullotta]

One big issue we've encountered (actually, a fairly critical one) is that there 
does not seem to be any way to *delete* a LuceneTimeline index.

This raises a more general question:


-  Is LuceneTimeline part of the IndexFramework or is it an 
"experimental" piece of code

-  Is there a way to achieve the same functionality of the 
LuceneTimeline using the "normal" Neo4J index framework?

Thanks in advance for any help!



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Re: [Neo4j] Incompatible batch inserted data with Python bindings

[Aaron Moffatt]

You might also try the newer cpython bindings which use jcc instead of jpype
to connect with Java.  They also don't support batch import, but I'm curious
if you run into the same issue.

https://github.com/OneSaidWho/neo4py


Aaron

On Thu, Jun 9, 2011 at 6:31 AM, oguerrer  wrote:

> Hi all,
>
> I am a newbie to neo4j so please bare with me.
>
> I installed neo4j for cpython and it is working fine. I can create graph
> databases and everything. Since I need to insert a huge data set, I need to
> use the batch inserter form neo4j in its Java form.
>
> The problem that I am having is that, after creating my database using the
> batch insert in Java, I am not able to open it using the python bindings.
>
> I really need to use the python bindings because I will be doing a lot of
> analysis using some python libraries. I have attempted to create the
> database with different versions of neo4j (1.2, 1.3, and 1.4) and still get
> the same result.
>
> I am trying to open the database in python using: graphdb =
> neo4j.GraphDatabase('fleedGraph')
>
> The errors that I get are:
>
> C:\Python26\lib\site-packages\jpype\_pykeywords.py:18: DeprecationWarning:
> the sets module is deprecated
>  import sets
> Traceback (most recent call last):
>  File "C:\Documents and
> Settings\tequilamambo\Desktop\batchDataMaker\nodesIndexer.py", line 10, in
> 
>graphdb = neo4j.GraphDatabase('fleedGraph')
>  File
>
> "C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\__init__.py",
> line 522, in __new__
>neo = core.load_neo(resource_uri, params)
>  File
>
> "C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\_core.py",
> line 332, in load_neo
>return load_neo(resource_uri, parameters)
>  File
>
> "C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\_core.py",
> line 225, in load_neo
>return GraphDatabase(resource_uri, settings, config, log)
>  File
>
> "C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\_core.py",
> line 230, in __init__
>neo = backend.load_neo(resource_uri, settings)
>  File
>
> "C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\_backend\__init__.py",
> line 74, in load_neo
>return impl(resource_uri, implementation.make_map(settings))
>  File "C:\Python26\lib\site-packages\jpype\_jclass.py", line 79, in
> _javaInit
>self.__javaobject__ =
> self.__class__.__javaclass__.newClassInstance(*args)
> jpype._jexception.RuntimeExceptionPyRaisable:
> org.neo4j.kernel.impl.transaction.TransactionFailureException: Could not
> create data source [nioneodb], see nested exception for cause of error
>
>
> I hope someone can help me with this.
>
> Best,
>
> omar
>
>
>
> --
> View this message in context:
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Re: [Neo4j] JAXRS Server Extensions

[Jim Webber]

Hi Miklós,

Batch updates through the REST API will be supported from 1.4 M4 which should 
be released today - so no need to roll your own.

Jim
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Re: [Neo4j] Fulltext indexing apparently not working when done in Batch insertion phase...

[Pablo Pareja]

yeah,
it works just fine using query(...) method instead of get(...)

Thanks ;)

Pablo

On Thu, Jun 9, 2011 at 5:31 PM, Michael Hunger <
michael.hun...@neotechnology.com> wrote:

> and you should use index.query(key,querystring) not get for fulltext
> queries
>
> Sent from my iBrick4
>
>
> Am 09.06.2011 um 17:04 schrieb Pablo Pareja :
>
> > Hi again,
> > I just found out that I had the wrong name for querying the actors index,
> > still when I change it for "name"
> > like this:
> >
> > System.out.println(index.get("name", "Keanu").size());
> > System.out.println(index.get("name", "keanu").size());
> > System.out.println(index.get("name", "Keanu Reeves").size());
> >
> > I still get unexpected results for a fulltext index:
> >
> > 0
> > 0
> > 1
> >
> > so it seems that it is actually an exact index what was created, even
> though
> > I specified the string 'fulltext' ...
> >
> > Pablo
> >
> > On Thu, Jun 9, 2011 at 4:49 PM, Pablo Pareja  wrote:
> >
> >> Hi all!
> >>
> >> Recently I noticed that some fulltext indexes I created and populated in
> my
> >> project in the Batch insertion
> >> phase are not working as expected.
> >> I've carried out some tests and cannot come up with what can be going
> >> wrong.
> >> That's why I thought, ok let's try with a really basic example (mostly
> >> taken from the official wiki ) and
> >> see if it works right first.
> >> This is the code:
> >>
> >>BatchInserter inserter = new
> >> BatchInserterImpl("target/neo4jdb-batchinsert");
> >>BatchInserterIndexProvider indexProvider = new
> >> LuceneBatchInserterIndexProvider(inserter);
> >>BatchInserterIndex actors =
> >> indexProvider.nodeIndex("actors", MapUtil.stringMap("type", "fulltext",
> >> "provider", "lucene"));
> >>
> >>
> >>Map properties = MapUtil.map("name",
> "Keanu
> >> Reeves");
> >>long node = inserter.createNode(properties);
> >>actors.add(node, properties);
> >>
> >>
> >>indexProvider.shutdown();
> >>inserter.shutdown();
> >>
> >>GraphDatabaseService graphDbService = new
> >> EmbeddedGraphDatabase(CommonData.DATABASE_FOLDER);
> >>
> >>Map indexFullTextProps = new
> >> HashMap();
> >>indexFullTextProps.put("provider", "lucene");
> >>indexFullTextProps.put("type", "fulltext");
> >>
> >>//--node indexes---
> >>Index index =
> >> graphDbService.index().forNodes("actors", indexFullTextProps);
> >>System.out.println(index.get("actors", "Keanu").size());
> >>System.out.println(index.get("actors", "keanu").size());
> >>System.out.println(index.get("actors", "Keanu
> >> Reeves").size());
> >>
> >>graphDbService.shutdown();
> >>
> >>
> >> I'm probably doing something wrong but I'm getting 0 size in the three
> >> queries I perform...
> >> Otherwise, is there any kind of known issue for this scenario (I mean,
> >> fulltext indexing with Batch insertion) ?
> >>
> >> I'd really appreciate any help with this.
> >> Cheers,
> >>
> >> Pablo Pareja
> >>
> >>
> >> --
> >> Pablo Pareja Tobes
> >> LinkedInhttp://www.linkedin.com/in/pabloparejatobes
> >> Twitter   http://www.twitter.com/pablopareja
> >>
> >> http://about.me/pablopareja
> >> http://www.ohnosequences.com
> >>
> >>
> >
> >
> > --
> > Pablo Pareja Tobes
> > LinkedInhttp://www.linkedin.com/in/pabloparejatobes
> > Twitter   http://www.twitter.com/pablopareja
> >
> > http://about.me/pablopareja
> > http://www.ohnosequences.com
> > ___
> > Neo4j mailing list
> > User@lists.neo4j.org
> > https://lists.neo4j.org/mailman/listinfo/user
> ___
> Neo4j mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user
>



-- 
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LinkedInhttp://www.linkedin.com/in/pabloparejatobes
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Re: [Neo4j] neo4j-spatial

[Saikat Kanjilal]

Hey Craig,Thanks for responding, here's what I'd like to see on the creative 
map:
1) My current position in the park and the positions of attractions and other 
things in the park2) Ability to perform traversals and graph matching 
algorithms once number 1 is known3) Ability to add new points in the park 
through a configurable process

We should talk in person, lots of interesting stuff to discuss, another thought 
I had was that you come up to Seattle for the graph-db meetup so we can talk in 
more detail.Regards
> Date: Thu, 9 Jun 2011 17:39:22 +0200
> From: cr...@amanzi.com
> To: user@lists.neo4j.org
> Subject: Re: [Neo4j] neo4j-spatial
> 
> Hi Saikat,
> 
> Yes, your explanation was clear, but I was busy with other work and failed
> to repond - my bad ;-)
> 
> Anyway, your idea is nice. And I can think of a few ways to model this in
> the graph, but at the end of the day the most important thing to decide
> first is what queries are you going to perform? Do you want a creative map,
> that while not drawn to scale, can still be asked questions like 'how far
> from the roller-coaster to the closest lunch venue?'. That kind of question
> could make use of the graph and the spatial extensions to provide an answer
> and show the route on the creative map, even if it is not a real to-scale
> map. Is that what you want to see?
> 
> You can try contact me on skype also.
> 
> Regards, Craig
> 
> On Thu, Jun 9, 2011 at 5:35 AM, Saikat Kanjilal  wrote:
> 
> >
> > Hi Craig,Following up on this thread, was this explanation clear?  If so
> > I'd like to talk more details.Regards
> >
> > From: sxk1...@hotmail.com
> > To: user@lists.neo4j.org
> > Subject: RE: [Neo4j] neo4j-spatial
> > Date: Sun, 5 Jun 2011 20:15:27 -0700
> >
> >
> >
> >
> >
> >
> >
> >
> > Hey Craig,Thanks for responding, so to be clear a theme park can have its
> > own map created by the graphic artists that work at the theme park company,
> > this map is sometimes 2D or sometimes a 3D map that really has no notion of
> > lat long coordinates or GPS.  What I am proposing is that we have the
> > ability to inject GPS coordinates into this creative map through some
> > mechanism that understands what the GPS coordinates of each point in this
> > creative map are.  So thats where the google map comes in, the google or
> > bing map would potentially have lat long coordinates of every point in a
> > theme park, so now the challenge is how do we transfer that knowledge inside
> > this 2D or 3D creative map so that we can run neo4j traversal algorithms
> > inside a map that has been injected with GPS data.  A theme park is just the
> > beginning, imagine having the power to inject this information into any 2D
> > or 3D map, that would be pretty amazing.In essence I am doing this so
> > that the creative map itself
> >  can use neo4j and be highly interactive and meaningful.
> > Let me know if that's still unclear and if so lets talk on skype.
> > Regards
> >
> > > Date: Mon, 6 Jun 2011 01:13:08 +0200
> > > From: cr...@amanzi.com
> > > To: user@lists.neo4j.org
> > > Subject: Re: [Neo4j] neo4j-spatial
> > >
> > > Hi Saikat,
> > >
> > > This sounds worth discussing further. I think I need to hear more about
> > your
> > > use case. I do not know what the term 'creative map' means, and what
> > > traversals you are planning to do? When you talk about 'plotting points',
> > do
> > > you mean you have a GPS and are moving inside a real theme park and want
> > to
> > > see this inside google maps? Or are you just drawing a path on an
> > > interactive GIS?
> > >
> > > I think once I have some more understanding of what your use case is,
> > what
> > > problem you are trying to solve, I am sure I will be able to give advice
> > on
> > > how best to approach it, if it relates to anything else we are doing, or
> > > whether this is something you would need to put some coding time into :-)
> > >
> > > Regards, Craig
> > >
> > > On Sun, Jun 5, 2011 at 8:26 PM, Saikat Kanjilal 
> > wrote:
> > >
> > > >
> > > > Craig et al,I have an interesting usecase that I've been thinking about
> > and
> > > > I was wondering if it would make a good candidate for inclusion inside
> > > > neo4j-spatial, I've read through the wiki (
> > > > http://wiki.neo4j.org/content/Collaboration_on_Spatial_Projects) and
> > was
> > > > interested in using neo4j-spatial to take any creative 2D Map and
> > > > geo-enabling it.  To explain in more detail lets say you are at a
> > certain
> > > > latitude and longitude in a theme park inside a google map (or a bing
> > map),
> > > > now you want to have the ability to reference that same latitude and
> > > > longitude inside a 2d or a 3d creative map of that theme park and then
> > be
> > > > able to plot these points and enable traversal algorithms inside the
> > > > creative map.
> > > > I was wondering if you guys are thinking about this usecase, if not I'd
> > > > love to work on and discuss this in more detail to see whether this
> > fits
>

Re: [Neo4j] neo4j-spatial

[Craig Taverner]

Hi Saikat,

Yes, your explanation was clear, but I was busy with other work and failed
to repond - my bad ;-)

Anyway, your idea is nice. And I can think of a few ways to model this in
the graph, but at the end of the day the most important thing to decide
first is what queries are you going to perform? Do you want a creative map,
that while not drawn to scale, can still be asked questions like 'how far
from the roller-coaster to the closest lunch venue?'. That kind of question
could make use of the graph and the spatial extensions to provide an answer
and show the route on the creative map, even if it is not a real to-scale
map. Is that what you want to see?

You can try contact me on skype also.

Regards, Craig

On Thu, Jun 9, 2011 at 5:35 AM, Saikat Kanjilal  wrote:

>
> Hi Craig,Following up on this thread, was this explanation clear?  If so
> I'd like to talk more details.Regards
>
> From: sxk1...@hotmail.com
> To: user@lists.neo4j.org
> Subject: RE: [Neo4j] neo4j-spatial
> Date: Sun, 5 Jun 2011 20:15:27 -0700
>
>
>
>
>
>
>
>
> Hey Craig,Thanks for responding, so to be clear a theme park can have its
> own map created by the graphic artists that work at the theme park company,
> this map is sometimes 2D or sometimes a 3D map that really has no notion of
> lat long coordinates or GPS.  What I am proposing is that we have the
> ability to inject GPS coordinates into this creative map through some
> mechanism that understands what the GPS coordinates of each point in this
> creative map are.  So thats where the google map comes in, the google or
> bing map would potentially have lat long coordinates of every point in a
> theme park, so now the challenge is how do we transfer that knowledge inside
> this 2D or 3D creative map so that we can run neo4j traversal algorithms
> inside a map that has been injected with GPS data.  A theme park is just the
> beginning, imagine having the power to inject this information into any 2D
> or 3D map, that would be pretty amazing.In essence I am doing this so
> that the creative map itself
>  can use neo4j and be highly interactive and meaningful.
> Let me know if that's still unclear and if so lets talk on skype.
> Regards
>
> > Date: Mon, 6 Jun 2011 01:13:08 +0200
> > From: cr...@amanzi.com
> > To: user@lists.neo4j.org
> > Subject: Re: [Neo4j] neo4j-spatial
> >
> > Hi Saikat,
> >
> > This sounds worth discussing further. I think I need to hear more about
> your
> > use case. I do not know what the term 'creative map' means, and what
> > traversals you are planning to do? When you talk about 'plotting points',
> do
> > you mean you have a GPS and are moving inside a real theme park and want
> to
> > see this inside google maps? Or are you just drawing a path on an
> > interactive GIS?
> >
> > I think once I have some more understanding of what your use case is,
> what
> > problem you are trying to solve, I am sure I will be able to give advice
> on
> > how best to approach it, if it relates to anything else we are doing, or
> > whether this is something you would need to put some coding time into :-)
> >
> > Regards, Craig
> >
> > On Sun, Jun 5, 2011 at 8:26 PM, Saikat Kanjilal 
> wrote:
> >
> > >
> > > Craig et al,I have an interesting usecase that I've been thinking about
> and
> > > I was wondering if it would make a good candidate for inclusion inside
> > > neo4j-spatial, I've read through the wiki (
> > > http://wiki.neo4j.org/content/Collaboration_on_Spatial_Projects) and
> was
> > > interested in using neo4j-spatial to take any creative 2D Map and
> > > geo-enabling it.  To explain in more detail lets say you are at a
> certain
> > > latitude and longitude in a theme park inside a google map (or a bing
> map),
> > > now you want to have the ability to reference that same latitude and
> > > longitude inside a 2d or a 3d creative map of that theme park and then
> be
> > > able to plot these points and enable traversal algorithms inside the
> > > creative map.
> > > I was wondering if you guys are thinking about this usecase, if not I'd
> > > love to work on and discuss this in more detail to see whether this
> fits
> > > into the neo4j-spatial roadmap.
> > > Thoughts?
> > > ___
> > > Neo4j mailing list
> > > User@lists.neo4j.org
> > > https://lists.neo4j.org/mailman/listinfo/user
> > >
> > ___
> > Neo4j mailing list
> > User@lists.neo4j.org
> > https://lists.neo4j.org/mailman/listinfo/user
>
> ___
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>
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Re: [Neo4j] Fulltext indexing apparently not working when done in Batch insertion phase...

[Michael Hunger]

and you should use index.query(key,querystring) not get for fulltext queries

Sent from my iBrick4


Am 09.06.2011 um 17:04 schrieb Pablo Pareja :

> Hi again,
> I just found out that I had the wrong name for querying the actors index,
> still when I change it for "name"
> like this:
> 
> System.out.println(index.get("name", "Keanu").size());
> System.out.println(index.get("name", "keanu").size());
> System.out.println(index.get("name", "Keanu Reeves").size());
> 
> I still get unexpected results for a fulltext index:
> 
> 0
> 0
> 1
> 
> so it seems that it is actually an exact index what was created, even though
> I specified the string 'fulltext' ...
> 
> Pablo
> 
> On Thu, Jun 9, 2011 at 4:49 PM, Pablo Pareja  wrote:
> 
>> Hi all!
>> 
>> Recently I noticed that some fulltext indexes I created and populated in my
>> project in the Batch insertion
>> phase are not working as expected.
>> I've carried out some tests and cannot come up with what can be going
>> wrong.
>> That's why I thought, ok let's try with a really basic example (mostly
>> taken from the official wiki ) and
>> see if it works right first.
>> This is the code:
>> 
>>BatchInserter inserter = new
>> BatchInserterImpl("target/neo4jdb-batchinsert");
>>BatchInserterIndexProvider indexProvider = new
>> LuceneBatchInserterIndexProvider(inserter);
>>BatchInserterIndex actors =
>> indexProvider.nodeIndex("actors", MapUtil.stringMap("type", "fulltext",
>> "provider", "lucene"));
>> 
>> 
>>Map properties = MapUtil.map("name", "Keanu
>> Reeves");
>>long node = inserter.createNode(properties);
>>actors.add(node, properties);
>> 
>> 
>>indexProvider.shutdown();
>>inserter.shutdown();
>> 
>>GraphDatabaseService graphDbService = new
>> EmbeddedGraphDatabase(CommonData.DATABASE_FOLDER);
>> 
>>Map indexFullTextProps = new
>> HashMap();
>>indexFullTextProps.put("provider", "lucene");
>>indexFullTextProps.put("type", "fulltext");
>> 
>>//--node indexes---
>>Index index =
>> graphDbService.index().forNodes("actors", indexFullTextProps);
>>System.out.println(index.get("actors", "Keanu").size());
>>System.out.println(index.get("actors", "keanu").size());
>>System.out.println(index.get("actors", "Keanu
>> Reeves").size());
>> 
>>graphDbService.shutdown();
>> 
>> 
>> I'm probably doing something wrong but I'm getting 0 size in the three
>> queries I perform...
>> Otherwise, is there any kind of known issue for this scenario (I mean,
>> fulltext indexing with Batch insertion) ?
>> 
>> I'd really appreciate any help with this.
>> Cheers,
>> 
>> Pablo Pareja
>> 
>> 
>> --
>> Pablo Pareja Tobes
>> LinkedInhttp://www.linkedin.com/in/pabloparejatobes
>> Twitter   http://www.twitter.com/pablopareja
>> 
>> http://about.me/pablopareja
>> http://www.ohnosequences.com
>> 
>> 
> 
> 
> -- 
> Pablo Pareja Tobes
> LinkedInhttp://www.linkedin.com/in/pabloparejatobes
> Twitter   http://www.twitter.com/pablopareja
> 
> http://about.me/pablopareja
> http://www.ohnosequences.com
> ___
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Re: [Neo4j] Fulltext indexing apparently not working when done in Batch insertion phase...

[Michael Hunger]

your query key should be "name"
not "actors"

Michael

Sent from my iBrick4


Am 09.06.2011 um 16:49 schrieb Pablo Pareja :

> Hi all!
> 
> Recently I noticed that some fulltext indexes I created and populated in my
> project in the Batch insertion
> phase are not working as expected.
> I've carried out some tests and cannot come up with what can be going wrong.
> That's why I thought, ok let's try with a really basic example (mostly taken
> from the official wiki ) and
> see if it works right first.
> This is the code:
> 
>BatchInserter inserter = new
> BatchInserterImpl("target/neo4jdb-batchinsert");
>BatchInserterIndexProvider indexProvider = new
> LuceneBatchInserterIndexProvider(inserter);
>BatchInserterIndex actors =
> indexProvider.nodeIndex("actors", MapUtil.stringMap("type", "fulltext",
> "provider", "lucene"));
> 
> 
>Map properties = MapUtil.map("name", "Keanu
> Reeves");
>long node = inserter.createNode(properties);
>actors.add(node, properties);
> 
> 
>indexProvider.shutdown();
>inserter.shutdown();
> 
>GraphDatabaseService graphDbService = new
> EmbeddedGraphDatabase(CommonData.DATABASE_FOLDER);
> 
>Map indexFullTextProps = new HashMap String>();
>indexFullTextProps.put("provider", "lucene");
>indexFullTextProps.put("type", "fulltext");
> 
>//--node indexes---
>Index index =
> graphDbService.index().forNodes("actors", indexFullTextProps);
>System.out.println(index.get("actors", "Keanu").size());
>System.out.println(index.get("actors", "keanu").size());
>System.out.println(index.get("actors", "Keanu
> Reeves").size());
> 
>graphDbService.shutdown();
> 
> 
> I'm probably doing something wrong but I'm getting 0 size in the three
> queries I perform...
> Otherwise, is there any kind of known issue for this scenario (I mean,
> fulltext indexing with Batch insertion) ?
> 
> I'd really appreciate any help with this.
> Cheers,
> 
> Pablo Pareja
> 
> 
> -- 
> Pablo Pareja Tobes
> LinkedInhttp://www.linkedin.com/in/pabloparejatobes
> Twitter   http://www.twitter.com/pablopareja
> 
> http://about.me/pablopareja
> http://www.ohnosequences.com
> ___
> Neo4j mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user
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Re: [Neo4j] Fulltext indexing apparently not working when done in Batch insertion phase...

[Pablo Pareja]

Hi again,
I just found out that I had the wrong name for querying the actors index,
still when I change it for "name"
like this:

System.out.println(index.get("name", "Keanu").size());
System.out.println(index.get("name", "keanu").size());
System.out.println(index.get("name", "Keanu Reeves").size());

I still get unexpected results for a fulltext index:

0
0
1

so it seems that it is actually an exact index what was created, even though
I specified the string 'fulltext' ...

Pablo

On Thu, Jun 9, 2011 at 4:49 PM, Pablo Pareja  wrote:

> Hi all!
>
> Recently I noticed that some fulltext indexes I created and populated in my
> project in the Batch insertion
> phase are not working as expected.
> I've carried out some tests and cannot come up with what can be going
> wrong.
> That's why I thought, ok let's try with a really basic example (mostly
> taken from the official wiki ) and
> see if it works right first.
> This is the code:
>
> BatchInserter inserter = new
> BatchInserterImpl("target/neo4jdb-batchinsert");
> BatchInserterIndexProvider indexProvider = new
> LuceneBatchInserterIndexProvider(inserter);
> BatchInserterIndex actors =
> indexProvider.nodeIndex("actors", MapUtil.stringMap("type", "fulltext",
> "provider", "lucene"));
>
>
> Map properties = MapUtil.map("name", "Keanu
> Reeves");
> long node = inserter.createNode(properties);
> actors.add(node, properties);
>
>
> indexProvider.shutdown();
> inserter.shutdown();
>
> GraphDatabaseService graphDbService = new
> EmbeddedGraphDatabase(CommonData.DATABASE_FOLDER);
>
> Map indexFullTextProps = new
> HashMap();
> indexFullTextProps.put("provider", "lucene");
> indexFullTextProps.put("type", "fulltext");
>
> //--node indexes---
> Index index =
> graphDbService.index().forNodes("actors", indexFullTextProps);
> System.out.println(index.get("actors", "Keanu").size());
> System.out.println(index.get("actors", "keanu").size());
> System.out.println(index.get("actors", "Keanu
> Reeves").size());
>
> graphDbService.shutdown();
>
>
> I'm probably doing something wrong but I'm getting 0 size in the three
> queries I perform...
> Otherwise, is there any kind of known issue for this scenario (I mean,
> fulltext indexing with Batch insertion) ?
>
> I'd really appreciate any help with this.
> Cheers,
>
> Pablo Pareja
>
>
> --
> Pablo Pareja Tobes
> LinkedInhttp://www.linkedin.com/in/pabloparejatobes
> Twitter   http://www.twitter.com/pablopareja
>
> http://about.me/pablopareja
> http://www.ohnosequences.com
>
>


-- 
Pablo Pareja Tobes
LinkedInhttp://www.linkedin.com/in/pabloparejatobes
Twitter   http://www.twitter.com/pablopareja

http://about.me/pablopareja
http://www.ohnosequences.com
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[Neo4j] Fulltext indexing apparently not working when done in Batch insertion phase...

[Pablo Pareja]

Hi all!

Recently I noticed that some fulltext indexes I created and populated in my
project in the Batch insertion
phase are not working as expected.
I've carried out some tests and cannot come up with what can be going wrong.
That's why I thought, ok let's try with a really basic example (mostly taken
from the official wiki ) and
see if it works right first.
This is the code:

BatchInserter inserter = new
BatchInserterImpl("target/neo4jdb-batchinsert");
BatchInserterIndexProvider indexProvider = new
LuceneBatchInserterIndexProvider(inserter);
BatchInserterIndex actors =
indexProvider.nodeIndex("actors", MapUtil.stringMap("type", "fulltext",
"provider", "lucene"));


Map properties = MapUtil.map("name", "Keanu
Reeves");
long node = inserter.createNode(properties);
actors.add(node, properties);


indexProvider.shutdown();
inserter.shutdown();

GraphDatabaseService graphDbService = new
EmbeddedGraphDatabase(CommonData.DATABASE_FOLDER);

Map indexFullTextProps = new HashMap();
indexFullTextProps.put("provider", "lucene");
indexFullTextProps.put("type", "fulltext");

//--node indexes---
Index index =
graphDbService.index().forNodes("actors", indexFullTextProps);
System.out.println(index.get("actors", "Keanu").size());
System.out.println(index.get("actors", "keanu").size());
System.out.println(index.get("actors", "Keanu
Reeves").size());

graphDbService.shutdown();


I'm probably doing something wrong but I'm getting 0 size in the three
queries I perform...
Otherwise, is there any kind of known issue for this scenario (I mean,
fulltext indexing with Batch insertion) ?

I'd really appreciate any help with this.
Cheers,

Pablo Pareja


-- 
Pablo Pareja Tobes
LinkedInhttp://www.linkedin.com/in/pabloparejatobes
Twitter   http://www.twitter.com/pablopareja

http://about.me/pablopareja
http://www.ohnosequences.com
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Re: [Neo4j] Problems binding to a specific ip

[Chris Gioran]

Hi Max,

there are two distinct problems here

One is that there is no IP access control that can be configured
through Neo4j. Setting the
listen URIs to a specific address in the configuration does not bind
the server there exclusively. This
behavior has to be imposed with external means, such as a firewall.

The other is a benign bug that has to do with logging the listen
address - currently it uses always the
java.net.InetAddress methods to find the hostname, ignoring the
configuration and leading to the
behavior you describe, since the JVM does not prefer the localhost
interface. This will be of course
addressed in subsequent SNAPSHOTs and milestone releases but it will
remain the default behavior.

Hope that clarifies things.

cheers,
CG

On Wed, Jun 8, 2011 at 2:59 PM, Maximilian Schulz  wrote:
> Hi everyone,
>
> after weeks of experimentation, we finally migrated one of our apps features
> to neo4j. But now that we are about to deploy the app to our staging server,
> we discovered a small problem with the server configuration. We have checked
> the manual at
> http://docs.neo4j.org/chunked/1.4.M03/server-configuration.html and followed
> the suggested configuration, but we are not getting the expected results.
>
> What we are trying to achieve is to bind the server to localhost, so it is
> no longer accessible from outside. We restricted access to IPv4 in the
> wrapper config and set the webadmin data and manage uri to
> http://localhost:7474. But when starting the server it still binds to the
> hostname.
>
> Here is the output of the start process. Check the last line, where it
> states that the server is started on http://OUR_DOMAIN:7474/
>
> 6/8/11 1:44:46 PM org.neo4j.server.database.Database INFO: Using database at
> /tmp/neo4j-community-1.4.M03/data/graph.db
> 6/8/11 1:44:47 PM org.neo4j.server.modules.DiscoveryModule INFO: Mounted
> discovery module at [/]
> 6/8/11 1:44:47 PM org.neo4j.server.modules.RESTApiModule INFO: Mounted REST
> API at [http://localhost:7474/db/data/]
> 6/8/11 1:44:47 PM org.neo4j.server.modules.ManagementApiModule INFO: Mounted
> management API at [http://localhost:7474/db/manage/]
> 6/8/11 1:44:47 PM org.neo4j.server.modules.WebAdminModule INFO: Mounted
> webadmin at [/webadmin]
> 6/8/11 1:44:47 PM org.neo4j.server.NeoServerWithEmbeddedWebServer INFO:
> Starting Neo Server on port [7474]
> 6/8/11 1:44:47 PM org.neo4j.server.web.Jetty6WebServer INFO: Mounting static
> content at [/webadmin] from [webadmin-html]
> 6/8/11 1:44:48 PM org.neo4j.server.NeoServerWithEmbeddedWebServer INFO:
> Server started on [http://OUR_DOMAIN:7474/]
>
>
> I am pretty sure that I have missed something, but I cannot figure out what.
> Any help is greatly appreciated!
>
> Max
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Re: [Neo4j] Cannot change node with neo4j-shell

[Marko Rodriguez]

I think that is a good idea. Mainly because if you can delete the root node, 
then its possible to get the neo4j-shell into this 'broken state.'

Thanks P,
Marko.

http://markorodriguez.com

On Jun 9, 2011, at 8:06 AM, Peter Neubauer wrote:

> Also,
> I think we should fic the Neo4j Shell functionality to not stop on
> missing 0 node. Will put it up to fix.
> 
> Cheers,
> 
> /peter neubauer
> 
> GTalk:  neubauer.peter
> Skype   peter.neubauer
> Phone   +46 704 106975
> LinkedIn   http://www.linkedin.com/in/neubauer
> Twitter  http://twitter.com/peterneubauer
> 
> http://www.neo4j.org   - Your high performance graph database.
> http://startupbootcamp.org/- Öresund - Innovation happens HERE.
> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
> 
> 
> 
> On Thu, Jun 9, 2011 at 4:04 PM, Marko Rodriguez  wrote:
>> Hi,
>> 
>> If the Neo4 graph is created first with Blueprints (not pre-existing), then 
>> the root vertex is removed as that is not a concept support by Blueprints. 
>> Its not a bug, its a feature :).
>> 
>> NOTE: If you create Neo4j graph with Neo4j and then load up a Neo4jGraph 
>> around it, then Blueprints will not alter the structure (i.e. remove the 
>> root vertex).
>> 
>> See ya,
>> Marko.
>> 
>> http://markorodriguez.com
>> 
>> On Jun 9, 2011, at 5:32 AM, Pierre De Wilde wrote:
>> 
>>> Hi Peter,
>>> 
>>> You're right: when reopening in gremlin, same recovery message.
>>> I will report this issue + node 0 to gremlin mailing list.
>>> 
>>> Thanks,
>>> Pierre
>>> 
>>> 
>>> 2011/6/9 Peter Neubauer 
>>> 
 Pierre,
 it seems that the db is not closed properly, it tries to resolve
 transaction upon startup. Could you try the same by opening it the
 second time with gremlin again? I am suspecting that node 0 is removed
 by Marko ;) and the import is not committed so the nodes are not there
 upon the next startup?
 
 Cheers,
 
 /peter neubauer
 
 GTalk:  neubauer.peter
 Skype   peter.neubauer
 Phone   +46 704 106975
 LinkedIn   http://www.linkedin.com/in/neubauer
 Twitter  http://twitter.com/peterneubauer
 
 http://www.neo4j.org   - Your high performance graph database.
 http://startupbootcamp.org/- Öresund - Innovation happens HERE.
 http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
 
 
 
 On Thu, Jun 9, 2011 at 12:52 PM, Pierre De Wilde
  wrote:
> Hey,
> 
> When creating a Neo4jGraph from gremlin (1.1-SNAPSHOT), I cannot change
 node
> in neo4j-shell (1.4-M03).
> It's probably related to inexistent root node 0...
> 
> Here is the steps to reproduce this issue:
> 
> ~$ gremlin
> 
>\,,,/
>(o o)
> -oOOo-(_)-oOOo-
> gremlin> g = new Neo4jGraph("/data/neo4j/tinkergraph")
> ==>neo4jgraph[EmbeddedGraphDatabase [/data/neo4j/tinkergraph]]
> gremlin> g.loadGraphML("data/graph-example-1.xml")
> ==>null
> gremlin> g.V.count()
> ==>6
> gremlin> g.E.count()
> ==>6
> gremlin> g.shutdown()
> ==>null
> gremlin> quit
> 
> ~$ neo4j-shell -path /data/neo4j/tinkergraph
> Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
> INFO: Unresolved transactions found, recovery started ...
> Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
> INFO: Recovery completed, all transactions have been resolved to a
> consistent state.
> NOTE: Local Neo4j graph database service at '/data/neo4j/tinkergraph'
> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
> 
> neo4j-sh \W$ ls 1
> *age  =[29]
> *name =[marko]
> (marko,1) --[created]-> (lop,3)
> (marko,1) --[knows]-> (josh,4)
> (marko,1) --[knows]-> (vadas,2)
> neo4j-sh \W$ pwd
> org.neo4j.graphdb.NotFoundException: Node[0]
> neo4j-sh \W$ cd -a 1
> org.neo4j.graphdb.NotFoundException: Node[0]
> 
> 
> Thanks beforehand for you help,
> Pierre
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 ___
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Re: [Neo4j] Neo4j webadmin Console Cheat sheet

[Marko Rodriguez]

Hi,

You can also do:

myRelation = g.addEdge(nodeA,nodeB,'KNOWS',[key:'value',key2:123])

As such, put a Map into the definition. A nice place to find these shorthand 
methods is:
https://github.com/tinkerpop/gremlin/wiki/Gremlin-Methods

See ya,
Marko.

http://markorodriguez.com

On Jun 9, 2011, at 7:00 AM, Pierre De Wilde wrote:

> Hi,
> 
> I have noticed a subtle typo in webadmin console cheat sheet (
> http://localhost:7474/webadmin/#/console/):
> 
> Create relation
> 
>> myRelation = g.addEdge(edgeProps, refNode, secondNode, 'KNOWS')
> 
> 
> will create the edge without the properties. The correct syntax is:
> 
> 
> Create relation
> 
>> myRelation = g.addEdge(refNode, secondNode, 'KNOWS', edgeProps)
> 
> See
> https://github.com/tinkerpop/gremlin/blob/master/src/main/groovy/com/tinkerpop/gremlin/loaders/GraphLoader.groovy
> for supported .addEdges() definitions.
> 
> Pierre
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Re: [Neo4j] Cannot change node with neo4j-shell

[Peter Neubauer]

Also,
I think we should fic the Neo4j Shell functionality to not stop on
missing 0 node. Will put it up to fix.

Cheers,

/peter neubauer

GTalk:      neubauer.peter
Skype       peter.neubauer
Phone       +46 704 106975
LinkedIn   http://www.linkedin.com/in/neubauer
Twitter      http://twitter.com/peterneubauer

http://www.neo4j.org               - Your high performance graph database.
http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.



On Thu, Jun 9, 2011 at 4:04 PM, Marko Rodriguez  wrote:
> Hi,
>
> If the Neo4 graph is created first with Blueprints (not pre-existing), then 
> the root vertex is removed as that is not a concept support by Blueprints. 
> Its not a bug, its a feature :).
>
> NOTE: If you create Neo4j graph with Neo4j and then load up a Neo4jGraph 
> around it, then Blueprints will not alter the structure (i.e. remove the root 
> vertex).
>
> See ya,
> Marko.
>
> http://markorodriguez.com
>
> On Jun 9, 2011, at 5:32 AM, Pierre De Wilde wrote:
>
>> Hi Peter,
>>
>> You're right: when reopening in gremlin, same recovery message.
>> I will report this issue + node 0 to gremlin mailing list.
>>
>> Thanks,
>> Pierre
>>
>>
>> 2011/6/9 Peter Neubauer 
>>
>>> Pierre,
>>> it seems that the db is not closed properly, it tries to resolve
>>> transaction upon startup. Could you try the same by opening it the
>>> second time with gremlin again? I am suspecting that node 0 is removed
>>> by Marko ;) and the import is not committed so the nodes are not there
>>> upon the next startup?
>>>
>>> Cheers,
>>>
>>> /peter neubauer
>>>
>>> GTalk:      neubauer.peter
>>> Skype       peter.neubauer
>>> Phone       +46 704 106975
>>> LinkedIn   http://www.linkedin.com/in/neubauer
>>> Twitter      http://twitter.com/peterneubauer
>>>
>>> http://www.neo4j.org               - Your high performance graph database.
>>> http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
>>> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>>>
>>>
>>>
>>> On Thu, Jun 9, 2011 at 12:52 PM, Pierre De Wilde
>>>  wrote:
 Hey,

 When creating a Neo4jGraph from gremlin (1.1-SNAPSHOT), I cannot change
>>> node
 in neo4j-shell (1.4-M03).
 It's probably related to inexistent root node 0...

 Here is the steps to reproduce this issue:

 ~$ gremlin

        \,,,/
        (o o)
 -oOOo-(_)-oOOo-
 gremlin> g = new Neo4jGraph("/data/neo4j/tinkergraph")
 ==>neo4jgraph[EmbeddedGraphDatabase [/data/neo4j/tinkergraph]]
 gremlin> g.loadGraphML("data/graph-example-1.xml")
 ==>null
 gremlin> g.V.count()
 ==>6
 gremlin> g.E.count()
 ==>6
 gremlin> g.shutdown()
 ==>null
 gremlin> quit

 ~$ neo4j-shell -path /data/neo4j/tinkergraph
 Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
 INFO: Unresolved transactions found, recovery started ...
 Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
 INFO: Recovery completed, all transactions have been resolved to a
 consistent state.
 NOTE: Local Neo4j graph database service at '/data/neo4j/tinkergraph'
 Welcome to the Neo4j Shell! Enter 'help' for a list of commands

 neo4j-sh \W$ ls 1
 *age  =[29]
 *name =[marko]
 (marko,1) --[created]-> (lop,3)
 (marko,1) --[knows]-> (josh,4)
 (marko,1) --[knows]-> (vadas,2)
 neo4j-sh \W$ pwd
 org.neo4j.graphdb.NotFoundException: Node[0]
 neo4j-sh \W$ cd -a 1
 org.neo4j.graphdb.NotFoundException: Node[0]


 Thanks beforehand for you help,
 Pierre
 ___
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 https://lists.neo4j.org/mailman/listinfo/user

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Re: [Neo4j] Cannot change node with neo4j-shell

[Marko Rodriguez]

Hi,

If the Neo4 graph is created first with Blueprints (not pre-existing), then the 
root vertex is removed as that is not a concept support by Blueprints. Its not 
a bug, its a feature :).

NOTE: If you create Neo4j graph with Neo4j and then load up a Neo4jGraph around 
it, then Blueprints will not alter the structure (i.e. remove the root vertex).

See ya,
Marko.

http://markorodriguez.com

On Jun 9, 2011, at 5:32 AM, Pierre De Wilde wrote:

> Hi Peter,
> 
> You're right: when reopening in gremlin, same recovery message.
> I will report this issue + node 0 to gremlin mailing list.
> 
> Thanks,
> Pierre
> 
> 
> 2011/6/9 Peter Neubauer 
> 
>> Pierre,
>> it seems that the db is not closed properly, it tries to resolve
>> transaction upon startup. Could you try the same by opening it the
>> second time with gremlin again? I am suspecting that node 0 is removed
>> by Marko ;) and the import is not committed so the nodes are not there
>> upon the next startup?
>> 
>> Cheers,
>> 
>> /peter neubauer
>> 
>> GTalk:  neubauer.peter
>> Skype   peter.neubauer
>> Phone   +46 704 106975
>> LinkedIn   http://www.linkedin.com/in/neubauer
>> Twitter  http://twitter.com/peterneubauer
>> 
>> http://www.neo4j.org   - Your high performance graph database.
>> http://startupbootcamp.org/- Öresund - Innovation happens HERE.
>> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>> 
>> 
>> 
>> On Thu, Jun 9, 2011 at 12:52 PM, Pierre De Wilde
>>  wrote:
>>> Hey,
>>> 
>>> When creating a Neo4jGraph from gremlin (1.1-SNAPSHOT), I cannot change
>> node
>>> in neo4j-shell (1.4-M03).
>>> It's probably related to inexistent root node 0...
>>> 
>>> Here is the steps to reproduce this issue:
>>> 
>>> ~$ gremlin
>>> 
>>>\,,,/
>>>(o o)
>>> -oOOo-(_)-oOOo-
>>> gremlin> g = new Neo4jGraph("/data/neo4j/tinkergraph")
>>> ==>neo4jgraph[EmbeddedGraphDatabase [/data/neo4j/tinkergraph]]
>>> gremlin> g.loadGraphML("data/graph-example-1.xml")
>>> ==>null
>>> gremlin> g.V.count()
>>> ==>6
>>> gremlin> g.E.count()
>>> ==>6
>>> gremlin> g.shutdown()
>>> ==>null
>>> gremlin> quit
>>> 
>>> ~$ neo4j-shell -path /data/neo4j/tinkergraph
>>> Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
>>> INFO: Unresolved transactions found, recovery started ...
>>> Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
>>> INFO: Recovery completed, all transactions have been resolved to a
>>> consistent state.
>>> NOTE: Local Neo4j graph database service at '/data/neo4j/tinkergraph'
>>> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
>>> 
>>> neo4j-sh \W$ ls 1
>>> *age  =[29]
>>> *name =[marko]
>>> (marko,1) --[created]-> (lop,3)
>>> (marko,1) --[knows]-> (josh,4)
>>> (marko,1) --[knows]-> (vadas,2)
>>> neo4j-sh \W$ pwd
>>> org.neo4j.graphdb.NotFoundException: Node[0]
>>> neo4j-sh \W$ cd -a 1
>>> org.neo4j.graphdb.NotFoundException: Node[0]
>>> 
>>> 
>>> Thanks beforehand for you help,
>>> Pierre
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Re: [Neo4j] Speeding up initial import of graph

[Daniel Hepper]

I will try caching the nodes in the heap as Michael suggested and I'll
also look into Chris' tool.

Thanks everybody for the effort and the suggestions!

Daniel


On Thu, Jun 9, 2011 at 1:27 PM, Michael Hunger
 wrote:
> I recreated Daniels code in Java, mainly because some things were missing 
> from his scala example.
>
> You're right that the index is the bottleneck. But with your small data set 
> it should be possible to cache the 10m nodes in a heap that fits in your 
> machine.
>
> I ran it first with the index and had about 8 seconds / 1M nodes and 320 
> sec/1M rels.
>
> Then I switched to 3G heap and a HashMap to keep the name=>node lookup and it 
> went to 2s/1M nodes and 13 down-to 3 sec for 1M rels.
>
> That is the approach that Chris takes only that his solution can persist the 
> map to disk and is more efficient :)
>
> Hope that helps.
>
> Michael
>
> package org.neo4j.load;
>
> import org.apache.commons.io.FileUtils;
> import org.junit.Test;
> import org.neo4j.graphdb.RelationshipType;
> import org.neo4j.graphdb.index.BatchInserterIndex;
> import org.neo4j.graphdb.index.BatchInserterIndexProvider;
> import org.neo4j.helpers.collection.MapUtil;
> import org.neo4j.index.impl.lucene.LuceneBatchInserterIndexProvider;
> import org.neo4j.kernel.impl.batchinsert.BatchInserter;
> import org.neo4j.kernel.impl.batchinsert.BatchInserterImpl;
>
> import java.io.*;
> import java.util.HashMap;
> import java.util.Map;
> import java.util.Random;
>
> /**
>  * @author mh
>  * @since 09.06.11
>  */
> public class Hepper {
>
>    public static final int REPORT_COUNT = Config.MILLION;
>
>    enum MyRelationshipTypes implements RelationshipType {
>        BELONGS_TO
>    }
>
>    public static final int COUNT = Config.MILLION * 10;
>
>    @Test
>    public void createData() throws IOException {
>        long time = System.currentTimeMillis();
>        final PrintWriter writer = new PrintWriter(new BufferedWriter(new 
> FileWriter("data.txt")));
>        Random r = new Random(-1L);
>        for (int nodes = 0; nodes < COUNT; nodes++) {
>            writer.printf("%07d|%07d|%07d%n", nodes, r.nextInt(COUNT), 
> r.nextInt(COUNT));
>        }
>        writer.close();
>        System.out.println("Creating data took "+ (System.currentTimeMillis() 
> - time) / 1000 +" seconds");
>    }
>
>    @Test
>    public void runImport() throws IOException {
>        Map cache=new HashMap(COUNT);
>        final File storeDir = new File("target/hepper");
>        FileUtils.deleteDirectory(storeDir);
>        BatchInserter inserter = new 
> BatchInserterImpl(storeDir.getAbsolutePath());
>        final BatchInserterIndexProvider indexProvider = new 
> LuceneBatchInserterIndexProvider(inserter);
>        final BatchInserterIndex index = indexProvider.nodeIndex("pages", 
> MapUtil.stringMap("type", "exact"));
>        BufferedReader reader = new BufferedReader(new FileReader("data.txt"));
>        String line = null;
>        int nodes = 0;
>        long time = System.currentTimeMillis();
>        long batchTime=time;
>        while ((line = reader.readLine()) != null) {
>            final String[] nodeNames = line.split("\\|");
>            final String name = nodeNames[0];
>            final Map props = MapUtil.map("name", name);
>            final long node = inserter.createNode(props);
>            //index.add(node, props);
>            cache.put(name,node);
>            nodes++;
>            if ((nodes % REPORT_COUNT) == 0) {
>                System.out.printf("%d nodes created. Took %d %n", nodes, 
> (System.currentTimeMillis() - batchTime));
>                batchTime = System.currentTimeMillis();
>            }
>        }
>
>        System.out.println("Creating nodes took "+ (System.currentTimeMillis() 
> - time) / 1000);
>        index.flush();
>        reader.close();
>        reader = new BufferedReader(new FileReader("data.txt"));
>        int rels = 0;
>        time = System.currentTimeMillis();
>        batchTime=time;
>        while ((line = reader.readLine()) != null) {
>            final String[] nodeNames = line.split("\\|");
>            final String name = nodeNames[0];
>            //final Long from = index.get("name", name).getSingle();
>            Long from =cache.get(name);
>            for (int j = 1; j < nodeNames.length; j++) {
>                //final Long to = index.get("name", nodeNames[j]).getSingle();
>                final Long to = cache.get(name);
>                inserter.createRelationship(from, to, 
> MyRelationshipTypes.BELONGS_TO,null);
>            }
>            rels++;
>            if ((rels % REPORT_COUNT) == 0) {
>                System.out.printf("%d relationships created. Took %d %n", 
> rels, (System.currentTimeMillis() - batchTime));
>                batchTime = System.currentTimeMillis();
>            }
>        }
>        System.out.println("Creating relationships took "+ 
> (System.currentTimeMillis() - time) / 1000);
>    }
> }
>
>
> 100 nodes created. Took 2227
> 200 nodes 

Re: [Neo4j] Import/export data with neo4j-shell ?

[Peter Neubauer]

Pierre,
that is what Chris is working on - making a well defined import path
for big datasets possible. Chris, will this result in a command line
tool, too? At least it will be documented in the manual when we get
there ...

Cheers,

/peter neubauer

GTalk:      neubauer.peter
Skype       peter.neubauer
Phone       +46 704 106975
LinkedIn   http://www.linkedin.com/in/neubauer
Twitter      http://twitter.com/peterneubauer

http://www.neo4j.org               - Your high performance graph database.
http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.



On Thu, Jun 9, 2011 at 3:49 PM, Pierre De Wilde  wrote:
> OK, so offline backup for community edition.
>
> Regarding the load of large datasets, is there a shell command available ?
>
> Thanks,
> Pierre
>
>
> 2011/6/9 Peter Neubauer 
>
>> Pierre,
>> you can backup you database by just copying the store files as Rick is
>> saying. No big deal, just not 99.999 SLA :)
>>
>> Cheers,
>>
>> /peter neubauer
>>
>> GTalk:      neubauer.peter
>> Skype       peter.neubauer
>> Phone       +46 704 106975
>> LinkedIn   http://www.linkedin.com/in/neubauer
>> Twitter      http://twitter.com/peterneubauer
>>
>> http://www.neo4j.org               - Your high performance graph database.
>> http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
>> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>>
>>
>>
>> On Thu, Jun 9, 2011 at 3:31 PM, Pierre De Wilde 
>> wrote:
>> >> The Backup features are only available in the Neo4j Enterprise Edition.
>> >
>> > Does it mean no backup in Neo4j Community Edition???
>> >
>> > Pierre
>> >
>> >
>> > 2011/6/9 Peter Neubauer 
>> >
>> >> Pierre,
>> >> the backup scripts are for online full and incremental backup
>> >> management, see
>> >> http://docs.neo4j.org/chunked/snapshot/operations-backup.html
>> >>
>> >> Cheers,
>> >>
>> >> /peter neubauer
>> >>
>> >> GTalk:      neubauer.peter
>> >> Skype       peter.neubauer
>> >> Phone       +46 704 106975
>> >> LinkedIn   http://www.linkedin.com/in/neubauer
>> >> Twitter      http://twitter.com/peterneubauer
>> >>
>> >> http://www.neo4j.org               - Your high performance graph
>> database.
>> >> http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
>> >> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>> >>
>> >>
>> >>
>> >> On Thu, Jun 9, 2011 at 2:18 PM, Pierre De Wilde <
>> pierredewi...@gmail.com>
>> >> wrote:
>> >> > Hi,
>> >> >
>> >> > How can I easily import/export data with neo4j?
>> >> >
>> >> > I can do it with Gremlin (GraphML only), but what are the
>> backup/restore
>> >> > console commands available in Neo4j?
>> >> >
>> >> > Pierre
>> >> > ___
>> >> > Neo4j mailing list
>> >> > User@lists.neo4j.org
>> >> > https://lists.neo4j.org/mailman/listinfo/user
>> >> >
>> >> ___
>> >> Neo4j mailing list
>> >> User@lists.neo4j.org
>> >> https://lists.neo4j.org/mailman/listinfo/user
>> >>
>> > ___
>> > Neo4j mailing list
>> > User@lists.neo4j.org
>> > https://lists.neo4j.org/mailman/listinfo/user
>> >
>> ___
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>> User@lists.neo4j.org
>> https://lists.neo4j.org/mailman/listinfo/user
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Re: [Neo4j] Import/export data with neo4j-shell ?

[Pierre De Wilde]

OK, so offline backup for community edition.

Regarding the load of large datasets, is there a shell command available ?

Thanks,
Pierre


2011/6/9 Peter Neubauer 

> Pierre,
> you can backup you database by just copying the store files as Rick is
> saying. No big deal, just not 99.999 SLA :)
>
> Cheers,
>
> /peter neubauer
>
> GTalk:  neubauer.peter
> Skype   peter.neubauer
> Phone   +46 704 106975
> LinkedIn   http://www.linkedin.com/in/neubauer
> Twitter  http://twitter.com/peterneubauer
>
> http://www.neo4j.org   - Your high performance graph database.
> http://startupbootcamp.org/- Öresund - Innovation happens HERE.
> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>
>
>
> On Thu, Jun 9, 2011 at 3:31 PM, Pierre De Wilde 
> wrote:
> >> The Backup features are only available in the Neo4j Enterprise Edition.
> >
> > Does it mean no backup in Neo4j Community Edition???
> >
> > Pierre
> >
> >
> > 2011/6/9 Peter Neubauer 
> >
> >> Pierre,
> >> the backup scripts are for online full and incremental backup
> >> management, see
> >> http://docs.neo4j.org/chunked/snapshot/operations-backup.html
> >>
> >> Cheers,
> >>
> >> /peter neubauer
> >>
> >> GTalk:  neubauer.peter
> >> Skype   peter.neubauer
> >> Phone   +46 704 106975
> >> LinkedIn   http://www.linkedin.com/in/neubauer
> >> Twitter  http://twitter.com/peterneubauer
> >>
> >> http://www.neo4j.org   - Your high performance graph
> database.
> >> http://startupbootcamp.org/- Öresund - Innovation happens HERE.
> >> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
> >>
> >>
> >>
> >> On Thu, Jun 9, 2011 at 2:18 PM, Pierre De Wilde <
> pierredewi...@gmail.com>
> >> wrote:
> >> > Hi,
> >> >
> >> > How can I easily import/export data with neo4j?
> >> >
> >> > I can do it with Gremlin (GraphML only), but what are the
> backup/restore
> >> > console commands available in Neo4j?
> >> >
> >> > Pierre
> >> > ___
> >> > Neo4j mailing list
> >> > User@lists.neo4j.org
> >> > https://lists.neo4j.org/mailman/listinfo/user
> >> >
> >> ___
> >> Neo4j mailing list
> >> User@lists.neo4j.org
> >> https://lists.neo4j.org/mailman/listinfo/user
> >>
> > ___
> > Neo4j mailing list
> > User@lists.neo4j.org
> > https://lists.neo4j.org/mailman/listinfo/user
> >
> ___
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Re: [Neo4j] Import/export data with neo4j-shell ?

[Peter Neubauer]

Pierre,
you can backup you database by just copying the store files as Rick is
saying. No big deal, just not 99.999 SLA :)

Cheers,

/peter neubauer

GTalk:      neubauer.peter
Skype       peter.neubauer
Phone       +46 704 106975
LinkedIn   http://www.linkedin.com/in/neubauer
Twitter      http://twitter.com/peterneubauer

http://www.neo4j.org               - Your high performance graph database.
http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.



On Thu, Jun 9, 2011 at 3:31 PM, Pierre De Wilde  wrote:
>> The Backup features are only available in the Neo4j Enterprise Edition.
>
> Does it mean no backup in Neo4j Community Edition???
>
> Pierre
>
>
> 2011/6/9 Peter Neubauer 
>
>> Pierre,
>> the backup scripts are for online full and incremental backup
>> management, see
>> http://docs.neo4j.org/chunked/snapshot/operations-backup.html
>>
>> Cheers,
>>
>> /peter neubauer
>>
>> GTalk:      neubauer.peter
>> Skype       peter.neubauer
>> Phone       +46 704 106975
>> LinkedIn   http://www.linkedin.com/in/neubauer
>> Twitter      http://twitter.com/peterneubauer
>>
>> http://www.neo4j.org               - Your high performance graph database.
>> http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
>> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>>
>>
>>
>> On Thu, Jun 9, 2011 at 2:18 PM, Pierre De Wilde 
>> wrote:
>> > Hi,
>> >
>> > How can I easily import/export data with neo4j?
>> >
>> > I can do it with Gremlin (GraphML only), but what are the backup/restore
>> > console commands available in Neo4j?
>> >
>> > Pierre
>> > ___
>> > Neo4j mailing list
>> > User@lists.neo4j.org
>> > https://lists.neo4j.org/mailman/listinfo/user
>> >
>> ___
>> Neo4j mailing list
>> User@lists.neo4j.org
>> https://lists.neo4j.org/mailman/listinfo/user
>>
> ___
> Neo4j mailing list
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>
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Re: [Neo4j] Import/export data with neo4j-shell ?

[Rick Bullotta]

Backup = stop database, copy database directory, restart database.

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
Behalf Of Pierre De Wilde
Sent: Thursday, June 09, 2011 9:32 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] Import/export data with neo4j-shell ?

> The Backup features are only available in the Neo4j Enterprise Edition.

Does it mean no backup in Neo4j Community Edition???

Pierre


2011/6/9 Peter Neubauer 

> Pierre,
> the backup scripts are for online full and incremental backup
> management, see
> http://docs.neo4j.org/chunked/snapshot/operations-backup.html
>
> Cheers,
>
> /peter neubauer
>
> GTalk:  neubauer.peter
> Skype   peter.neubauer
> Phone   +46 704 106975
> LinkedIn   http://www.linkedin.com/in/neubauer
> Twitter  http://twitter.com/peterneubauer
>
> http://www.neo4j.org   - Your high performance graph database.
> http://startupbootcamp.org/- Öresund - Innovation happens HERE.
> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>
>
>
> On Thu, Jun 9, 2011 at 2:18 PM, Pierre De Wilde 
> wrote:
> > Hi,
> >
> > How can I easily import/export data with neo4j?
> >
> > I can do it with Gremlin (GraphML only), but what are the backup/restore
> > console commands available in Neo4j?
> >
> > Pierre
> > ___
> > Neo4j mailing list
> > User@lists.neo4j.org
> > https://lists.neo4j.org/mailman/listinfo/user
> >
> ___
> Neo4j mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user
>
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Re: [Neo4j] Import/export data with neo4j-shell ?

[Pierre De Wilde]

> The Backup features are only available in the Neo4j Enterprise Edition.

Does it mean no backup in Neo4j Community Edition???

Pierre


2011/6/9 Peter Neubauer 

> Pierre,
> the backup scripts are for online full and incremental backup
> management, see
> http://docs.neo4j.org/chunked/snapshot/operations-backup.html
>
> Cheers,
>
> /peter neubauer
>
> GTalk:  neubauer.peter
> Skype   peter.neubauer
> Phone   +46 704 106975
> LinkedIn   http://www.linkedin.com/in/neubauer
> Twitter  http://twitter.com/peterneubauer
>
> http://www.neo4j.org   - Your high performance graph database.
> http://startupbootcamp.org/- Öresund - Innovation happens HERE.
> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>
>
>
> On Thu, Jun 9, 2011 at 2:18 PM, Pierre De Wilde 
> wrote:
> > Hi,
> >
> > How can I easily import/export data with neo4j?
> >
> > I can do it with Gremlin (GraphML only), but what are the backup/restore
> > console commands available in Neo4j?
> >
> > Pierre
> > ___
> > Neo4j mailing list
> > User@lists.neo4j.org
> > https://lists.neo4j.org/mailman/listinfo/user
> >
> ___
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>
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[Neo4j] Incompatible batch inserted data with Python bindings

[oguerrer]

Hi all,

I am a newbie to neo4j so please bare with me.

I installed neo4j for cpython and it is working fine. I can create graph
databases and everything. Since I need to insert a huge data set, I need to
use the batch inserter form neo4j in its Java form.

The problem that I am having is that, after creating my database using the
batch insert in Java, I am not able to open it using the python bindings.

I really need to use the python bindings because I will be doing a lot of
analysis using some python libraries. I have attempted to create the
database with different versions of neo4j (1.2, 1.3, and 1.4) and still get
the same result.

I am trying to open the database in python using: graphdb =
neo4j.GraphDatabase('fleedGraph')

The errors that I get are:

C:\Python26\lib\site-packages\jpype\_pykeywords.py:18: DeprecationWarning:
the sets module is deprecated
  import sets
Traceback (most recent call last):
  File "C:\Documents and
Settings\tequilamambo\Desktop\batchDataMaker\nodesIndexer.py", line 10, in

graphdb = neo4j.GraphDatabase('fleedGraph')
  File
"C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\__init__.py",
line 522, in __new__
neo = core.load_neo(resource_uri, params)
  File
"C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\_core.py",
line 332, in load_neo
return load_neo(resource_uri, parameters)
  File
"C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\_core.py",
line 225, in load_neo
return GraphDatabase(resource_uri, settings, config, log)
  File
"C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\_core.py",
line 230, in __init__
neo = backend.load_neo(resource_uri, settings)
  File
"C:\Python26\lib\site-packages\neo4j.py-0.1_snapshot-py2.6.egg\neo4j\_backend\__init__.py",
line 74, in load_neo
return impl(resource_uri, implementation.make_map(settings))
  File "C:\Python26\lib\site-packages\jpype\_jclass.py", line 79, in
_javaInit
self.__javaobject__ =
self.__class__.__javaclass__.newClassInstance(*args)
jpype._jexception.RuntimeExceptionPyRaisable:
org.neo4j.kernel.impl.transaction.TransactionFailureException: Could not
create data source [nioneodb], see nested exception for cause of error


I hope someone can help me with this.

Best,

omar



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Re: [Neo4j] Import/export data with neo4j-shell ?

[Peter Neubauer]

Pierre,
the backup scripts are for online full and incremental backup
management, see
http://docs.neo4j.org/chunked/snapshot/operations-backup.html

Cheers,

/peter neubauer

GTalk:      neubauer.peter
Skype       peter.neubauer
Phone       +46 704 106975
LinkedIn   http://www.linkedin.com/in/neubauer
Twitter      http://twitter.com/peterneubauer

http://www.neo4j.org               - Your high performance graph database.
http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.



On Thu, Jun 9, 2011 at 2:18 PM, Pierre De Wilde  wrote:
> Hi,
>
> How can I easily import/export data with neo4j?
>
> I can do it with Gremlin (GraphML only), but what are the backup/restore
> console commands available in Neo4j?
>
> Pierre
> ___
> Neo4j mailing list
> User@lists.neo4j.org
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>
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Re: [Neo4j] Neo4j webadmin Console Cheat sheet

[Peter Neubauer]

Pierre,
thanks for pointing it out! Fixed in
https://github.com/neo4j/community/commit/d7b442e14461e9256a1747adca3d4128466089a5

Cheers,

/peter neubauer

GTalk:      neubauer.peter
Skype       peter.neubauer
Phone       +46 704 106975
LinkedIn   http://www.linkedin.com/in/neubauer
Twitter      http://twitter.com/peterneubauer

http://www.neo4j.org               - Your high performance graph database.
http://startupbootcamp.org/    - Öresund - Innovation happens HERE.
http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.



On Thu, Jun 9, 2011 at 3:00 PM, Pierre De Wilde  wrote:
> Hi,
>
> I have noticed a subtle typo in webadmin console cheat sheet (
> http://localhost:7474/webadmin/#/console/):
>
> Create relation
>
>> myRelation = g.addEdge(edgeProps, refNode, secondNode, 'KNOWS')
>
>
> will create the edge without the properties. The correct syntax is:
>
>
> Create relation
>
>> myRelation = g.addEdge(refNode, secondNode, 'KNOWS', edgeProps)
>
> See
> https://github.com/tinkerpop/gremlin/blob/master/src/main/groovy/com/tinkerpop/gremlin/loaders/GraphLoader.groovy
> for supported .addEdges() definitions.
>
> Pierre
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[Neo4j] Neo4j webadmin Console Cheat sheet

[Pierre De Wilde]

Hi,

I have noticed a subtle typo in webadmin console cheat sheet (
http://localhost:7474/webadmin/#/console/):

Create relation

> myRelation = g.addEdge(edgeProps, refNode, secondNode, 'KNOWS')


will create the edge without the properties. The correct syntax is:


Create relation

> myRelation = g.addEdge(refNode, secondNode, 'KNOWS', edgeProps)

See
https://github.com/tinkerpop/gremlin/blob/master/src/main/groovy/com/tinkerpop/gremlin/loaders/GraphLoader.groovy
for supported .addEdges() definitions.

Pierre
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[Neo4j] Import/export data with neo4j-shell ?

[Pierre De Wilde]

Hi,

How can I easily import/export data with neo4j?

I can do it with Gremlin (GraphML only), but what are the backup/restore
console commands available in Neo4j?

Pierre
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Re: [Neo4j] Cannot change node with neo4j-shell

[Pierre De Wilde]

Hi Peter,

You're right: when reopening in gremlin, same recovery message.
I will report this issue + node 0 to gremlin mailing list.

Thanks,
Pierre


2011/6/9 Peter Neubauer 

> Pierre,
> it seems that the db is not closed properly, it tries to resolve
> transaction upon startup. Could you try the same by opening it the
> second time with gremlin again? I am suspecting that node 0 is removed
> by Marko ;) and the import is not committed so the nodes are not there
> upon the next startup?
>
> Cheers,
>
> /peter neubauer
>
> GTalk:  neubauer.peter
> Skype   peter.neubauer
> Phone   +46 704 106975
> LinkedIn   http://www.linkedin.com/in/neubauer
> Twitter  http://twitter.com/peterneubauer
>
> http://www.neo4j.org   - Your high performance graph database.
> http://startupbootcamp.org/- Öresund - Innovation happens HERE.
> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.
>
>
>
> On Thu, Jun 9, 2011 at 12:52 PM, Pierre De Wilde
>  wrote:
> > Hey,
> >
> > When creating a Neo4jGraph from gremlin (1.1-SNAPSHOT), I cannot change
> node
> > in neo4j-shell (1.4-M03).
> > It's probably related to inexistent root node 0...
> >
> > Here is the steps to reproduce this issue:
> >
> > ~$ gremlin
> >
> > \,,,/
> > (o o)
> > -oOOo-(_)-oOOo-
> > gremlin> g = new Neo4jGraph("/data/neo4j/tinkergraph")
> > ==>neo4jgraph[EmbeddedGraphDatabase [/data/neo4j/tinkergraph]]
> > gremlin> g.loadGraphML("data/graph-example-1.xml")
> > ==>null
> > gremlin> g.V.count()
> > ==>6
> > gremlin> g.E.count()
> > ==>6
> > gremlin> g.shutdown()
> > ==>null
> > gremlin> quit
> >
> > ~$ neo4j-shell -path /data/neo4j/tinkergraph
> > Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
> > INFO: Unresolved transactions found, recovery started ...
> > Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
> > INFO: Recovery completed, all transactions have been resolved to a
> > consistent state.
> > NOTE: Local Neo4j graph database service at '/data/neo4j/tinkergraph'
> > Welcome to the Neo4j Shell! Enter 'help' for a list of commands
> >
> > neo4j-sh \W$ ls 1
> > *age  =[29]
> > *name =[marko]
> > (marko,1) --[created]-> (lop,3)
> > (marko,1) --[knows]-> (josh,4)
> > (marko,1) --[knows]-> (vadas,2)
> > neo4j-sh \W$ pwd
> > org.neo4j.graphdb.NotFoundException: Node[0]
> > neo4j-sh \W$ cd -a 1
> > org.neo4j.graphdb.NotFoundException: Node[0]
> >
> >
> > Thanks beforehand for you help,
> > Pierre
> > ___
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Re: [Neo4j] Speeding up initial import of graph

[Michael Hunger]

I recreated Daniels code in Java, mainly because some things were missing from 
his scala example.

You're right that the index is the bottleneck. But with your small data set it 
should be possible to cache the 10m nodes in a heap that fits in your machine.

I ran it first with the index and had about 8 seconds / 1M nodes and 320 sec/1M 
rels.

Then I switched to 3G heap and a HashMap to keep the name=>node lookup and it 
went to 2s/1M nodes and 13 down-to 3 sec for 1M rels.

That is the approach that Chris takes only that his solution can persist the 
map to disk and is more efficient :)

Hope that helps.

Michael

package org.neo4j.load;

import org.apache.commons.io.FileUtils;
import org.junit.Test;
import org.neo4j.graphdb.RelationshipType;
import org.neo4j.graphdb.index.BatchInserterIndex;
import org.neo4j.graphdb.index.BatchInserterIndexProvider;
import org.neo4j.helpers.collection.MapUtil;
import org.neo4j.index.impl.lucene.LuceneBatchInserterIndexProvider;
import org.neo4j.kernel.impl.batchinsert.BatchInserter;
import org.neo4j.kernel.impl.batchinsert.BatchInserterImpl;

import java.io.*;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

/**
 * @author mh
 * @since 09.06.11
 */
public class Hepper {

public static final int REPORT_COUNT = Config.MILLION;

enum MyRelationshipTypes implements RelationshipType {
BELONGS_TO
}

public static final int COUNT = Config.MILLION * 10;

@Test
public void createData() throws IOException {
long time = System.currentTimeMillis();
final PrintWriter writer = new PrintWriter(new BufferedWriter(new 
FileWriter("data.txt")));
Random r = new Random(-1L);
for (int nodes = 0; nodes < COUNT; nodes++) {
writer.printf("%07d|%07d|%07d%n", nodes, r.nextInt(COUNT), 
r.nextInt(COUNT));
}
writer.close();
System.out.println("Creating data took "+ (System.currentTimeMillis() - 
time) / 1000 +" seconds");
}

@Test
public void runImport() throws IOException {
Map cache=new HashMap(COUNT);
final File storeDir = new File("target/hepper");
FileUtils.deleteDirectory(storeDir);
BatchInserter inserter = new 
BatchInserterImpl(storeDir.getAbsolutePath());
final BatchInserterIndexProvider indexProvider = new 
LuceneBatchInserterIndexProvider(inserter);
final BatchInserterIndex index = indexProvider.nodeIndex("pages", 
MapUtil.stringMap("type", "exact"));
BufferedReader reader = new BufferedReader(new FileReader("data.txt"));
String line = null;
int nodes = 0;
long time = System.currentTimeMillis();
long batchTime=time;
while ((line = reader.readLine()) != null) {
final String[] nodeNames = line.split("\\|");
final String name = nodeNames[0];
final Map props = MapUtil.map("name", name);
final long node = inserter.createNode(props);
//index.add(node, props);
cache.put(name,node);
nodes++;
if ((nodes % REPORT_COUNT) == 0) {
System.out.printf("%d nodes created. Took %d %n", nodes, 
(System.currentTimeMillis() - batchTime));
batchTime = System.currentTimeMillis();
}
}

System.out.println("Creating nodes took "+ (System.currentTimeMillis() 
- time) / 1000);
index.flush();
reader.close();
reader = new BufferedReader(new FileReader("data.txt"));
int rels = 0;
time = System.currentTimeMillis();
batchTime=time;
while ((line = reader.readLine()) != null) {
final String[] nodeNames = line.split("\\|");
final String name = nodeNames[0];
//final Long from = index.get("name", name).getSingle();
Long from =cache.get(name);
for (int j = 1; j < nodeNames.length; j++) {
//final Long to = index.get("name", nodeNames[j]).getSingle();
final Long to = cache.get(name);
inserter.createRelationship(from, to, 
MyRelationshipTypes.BELONGS_TO,null);
}
rels++;
if ((rels % REPORT_COUNT) == 0) {
System.out.printf("%d relationships created. Took %d %n", rels, 
(System.currentTimeMillis() - batchTime));
batchTime = System.currentTimeMillis();
}
}
System.out.println("Creating relationships took "+ 
(System.currentTimeMillis() - time) / 1000);
}
}


100 nodes created. Took 2227 
200 nodes created. Took 1930 
300 nodes created. Took 1818 
400 nodes created. Took 1966 
500 nodes created. Took 1857 
600 nodes created. Took 2009 
700 nodes created. Took 2068 
800 nodes created. Took 1991 
900 nodes created. Took 2151 
1000 nodes created. Took 2276 
Creating nodes took 20
100 relationships created. Took 13441 
200 relationships create

Re: [Neo4j] Cannot change node with neo4j-shell

[Peter Neubauer]

Pierre,
it seems that the db is not closed properly, it tries to resolve
transaction upon startup. Could you try the same by opening it the
second time with gremlin again? I am suspecting that node 0 is removed
by Marko ;) and the import is not committed so the nodes are not there
upon the next startup?

Cheers,

/peter neubauer

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On Thu, Jun 9, 2011 at 12:52 PM, Pierre De Wilde
 wrote:
> Hey,
>
> When creating a Neo4jGraph from gremlin (1.1-SNAPSHOT), I cannot change node
> in neo4j-shell (1.4-M03).
> It's probably related to inexistent root node 0...
>
> Here is the steps to reproduce this issue:
>
> ~$ gremlin
>
>         \,,,/
>         (o o)
> -oOOo-(_)-oOOo-
> gremlin> g = new Neo4jGraph("/data/neo4j/tinkergraph")
> ==>neo4jgraph[EmbeddedGraphDatabase [/data/neo4j/tinkergraph]]
> gremlin> g.loadGraphML("data/graph-example-1.xml")
> ==>null
> gremlin> g.V.count()
> ==>6
> gremlin> g.E.count()
> ==>6
> gremlin> g.shutdown()
> ==>null
> gremlin> quit
>
> ~$ neo4j-shell -path /data/neo4j/tinkergraph
> Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
> INFO: Unresolved transactions found, recovery started ...
> Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
> INFO: Recovery completed, all transactions have been resolved to a
> consistent state.
> NOTE: Local Neo4j graph database service at '/data/neo4j/tinkergraph'
> Welcome to the Neo4j Shell! Enter 'help' for a list of commands
>
> neo4j-sh \W$ ls 1
> *age  =[29]
> *name =[marko]
> (marko,1) --[created]-> (lop,3)
> (marko,1) --[knows]-> (josh,4)
> (marko,1) --[knows]-> (vadas,2)
> neo4j-sh \W$ pwd
> org.neo4j.graphdb.NotFoundException: Node[0]
> neo4j-sh \W$ cd -a 1
> org.neo4j.graphdb.NotFoundException: Node[0]
>
>
> Thanks beforehand for you help,
> Pierre
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[Neo4j] Cannot change node with neo4j-shell

[Pierre De Wilde]

Hey,

When creating a Neo4jGraph from gremlin (1.1-SNAPSHOT), I cannot change node
in neo4j-shell (1.4-M03).
It's probably related to inexistent root node 0...

Here is the steps to reproduce this issue:

~$ gremlin

 \,,,/
 (o o)
-oOOo-(_)-oOOo-
gremlin> g = new Neo4jGraph("/data/neo4j/tinkergraph")
==>neo4jgraph[EmbeddedGraphDatabase [/data/neo4j/tinkergraph]]
gremlin> g.loadGraphML("data/graph-example-1.xml")
==>null
gremlin> g.V.count()
==>6
gremlin> g.E.count()
==>6
gremlin> g.shutdown()
==>null
gremlin> quit

~$ neo4j-shell -path /data/neo4j/tinkergraph
Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
INFO: Unresolved transactions found, recovery started ...
Jun 9, 2011 12:34:17 PM org.neo4j.kernel.impl.transaction.TxManager init
INFO: Recovery completed, all transactions have been resolved to a
consistent state.
NOTE: Local Neo4j graph database service at '/data/neo4j/tinkergraph'
Welcome to the Neo4j Shell! Enter 'help' for a list of commands

neo4j-sh \W$ ls 1
*age  =[29]
*name =[marko]
(marko,1) --[created]-> (lop,3)
(marko,1) --[knows]-> (josh,4)
(marko,1) --[knows]-> (vadas,2)
neo4j-sh \W$ pwd
org.neo4j.graphdb.NotFoundException: Node[0]
neo4j-sh \W$ cd -a 1
org.neo4j.graphdb.NotFoundException: Node[0]


Thanks beforehand for you help,
Pierre
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Re: [Neo4j] Speeding up initial import of graph

[Chris Gioran]

Hi Daniel,

I am working currently on a tool for importing big data sets into Neo4j graphs.
The main problem in such operations is that the usual index
implementations are just too
slow for retrieving the mapping from keys to created node ids, so a
custom solution is
needed, that is dependent to a varying degree on the distribution of
values of the input set.

While your dataset is smaller than the data sizes i deal with, i would
like to use it as a test case. If you could
provide somehow the actual data or something that emulates them, I
would be grateful.

If you want to see my approach, it is available here

https://github.com/digitalstain/BigDataImport

The core algorithm is an XJoin style two-level-hashing scheme with
adaptable eviction strategies but it is not production ready yet,
mainly from an API perspective.

You can contact me directly for any details regarding this issue.

cheers,
CG

On Thu, Jun 9, 2011 at 12:59 PM, Daniel Hepper  wrote:
> Hi all,
>
> I'm struggling with importing a graph with about 10m nodes and 20m
> relationships, with nodes having 0 to 10 relationships. Creating the
> nodes takes about 10 minutes, but creating the relationships is slower
> by several orders of magnitude. I'm using a 2.4 GHz i7 MacBookPro with
> 4GB RAM and conventional HDD.
>
> The graph is stored as adjacency list in a text file where each line
> has this form:
>
> Foo|Bar|Baz
> (Node Foo has relations to Bar and Baz)
>
> My current approach is to iterate over the whole file twice. In the
> first run, I create a node with the property "name" for the first
> entry in the line (Foo in this case) and add it to an index.
> In the second run, I get the start node and the end nodes from the
> index by name and create the relationships.
>
> My code can be found here: http://pastie.org/2041801
>
> With my approach, the best I can achieve is 100 created relationships
> per second.
> I experimented with mapped memory settings, but without much effect.
> Is this the speed I can expect?
> Any advice on how to speed up this process?
>
> Best regards,
> Daniel Hepper
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Re: [Neo4j] Speeding up initial import of graph

[Paul Bandler]

I too am experiencing similar problems - possibly worse than you're seeing as I 
am using a very modestly provisioned windows m/c (1.5Gb ram, setting max heap 
to 1Gb, oldish processor).

I found that using the BatchInserter for loading nodes the heap grew and grew 
until when it was exhausted everything ground to a halt practically.  I 
experimented with various settings of the cache memory but nothing made much 
difference. So now I reset the BatchInserter (i.e. shutdown and re-start it) 
ever 100,000 nodes or so.  I posted questions on the list before but the 
replies seemed to suggest that it was just a config issue - but no config 
changes I made helped much.   I get the impression that most people are using 
Neo4j with hugely larger memory footprints than I can realistically expect to 
use at this stage and so maybe that is why this problem may not receive much 
attention. 

I have a similar approach to you for relationships - i.e. creating them in a 
second pass.  I'm not sure how memory hungry it is, but again have built a 
class that resets the inserters every 100,000 relationships.  It is slow, but 
experimenting with my 'reset' size, didn't make much difference so I'm 
suspecting that its limited by index access time.  Effectively I suspect it's 
going to disk for every index look up that it sees for the first time, and also 
suspect that the size of the index might make a difference as I have over 3m 
nodes in some indexes and these are the ones that are very slow.

I suspect there might be some tuning that can be done, and I really think the 
problem with running out of heap is probably a bug that should be fixed, but am 
now turning my attention to finding ways of creating relationships when the 
initial nodes are created (at least for those for which this is possible) to 
avoid the index lookup overhead...

I'll let you know if/how this helps, but am also interested to learn of others 
experience.

On 9 Jun 2011, at 10:59, Daniel Hepper wrote:

> Hi all,
> 
> I'm struggling with importing a graph with about 10m nodes and 20m
> relationships, with nodes having 0 to 10 relationships. Creating the
> nodes takes about 10 minutes, but creating the relationships is slower
> by several orders of magnitude. I'm using a 2.4 GHz i7 MacBookPro with
> 4GB RAM and conventional HDD.
> 
> The graph is stored as adjacency list in a text file where each line
> has this form:
> 
> Foo|Bar|Baz
> (Node Foo has relations to Bar and Baz)
> 
> My current approach is to iterate over the whole file twice. In the
> first run, I create a node with the property "name" for the first
> entry in the line (Foo in this case) and add it to an index.
> In the second run, I get the start node and the end nodes from the
> index by name and create the relationships.
> 
> My code can be found here: http://pastie.org/2041801
> 
> With my approach, the best I can achieve is 100 created relationships
> per second.
> I experimented with mapped memory settings, but without much effect.
> Is this the speed I can expect?
> Any advice on how to speed up this process?
> 
> Best regards,
> Daniel Hepper
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[Neo4j] Speeding up initial import of graph

[Daniel Hepper]

Hi all,

I'm struggling with importing a graph with about 10m nodes and 20m
relationships, with nodes having 0 to 10 relationships. Creating the
nodes takes about 10 minutes, but creating the relationships is slower
by several orders of magnitude. I'm using a 2.4 GHz i7 MacBookPro with
4GB RAM and conventional HDD.

The graph is stored as adjacency list in a text file where each line
has this form:

Foo|Bar|Baz
(Node Foo has relations to Bar and Baz)

My current approach is to iterate over the whole file twice. In the
first run, I create a node with the property "name" for the first
entry in the line (Foo in this case) and add it to an index.
In the second run, I get the start node and the end nodes from the
index by name and create the relationships.

My code can be found here: http://pastie.org/2041801

With my approach, the best I can achieve is 100 created relationships
per second.
I experimented with mapped memory settings, but without much effect.
Is this the speed I can expect?
Any advice on how to speed up this process?

Best regards,
Daniel Hepper
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Re: [Neo4j] How to embed neo4j to OSGI env without spring?

[Peter Neubauer]

Nicolas,
I have now a failing testcase (albeit using snapshot versions of PAX
stuff, trying to relax that ASAP) at
https://github.com/neo4j/neo4j-osgi-examples that exposes the
IndexProvider not being found in OSGi environments.

Is your fork of Neo4j Community fixing this issue? In that case, it
would be great to verify it against the testcase and merge it in!

Cheers,

/peter neubauer

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http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party.



On Thu, Jun 2, 2011 at 10:33 AM, Nicolas Jouanin
 wrote:
> Hi,
>
> This page may help you : 
> http://wiki.escapek.org/display/DEV/Neo4j+community+edition+installation
>
>
> Le 2 juin 2011 à 09:30, Super Wang a écrit :
>
>> I've tried to expose org.neo4j.graphdb.GraphDatabaseService as a service
>> component directly and use a delegate class as implementation, but failed...
>>
>>
>> On Thu, Jun 2, 2011 at 12:34, Andreas Kollegger <
>> andreas.kolleg...@neotechnology.com> wrote:
>>
>>> Hey,
>>>
>>> The Neo4j libraries should be usable within OSGi, though we're a bit lax in
>>> keeping on top of that. The best approach would be to use one bundle to
>>> instantiate the database and advertise the reference as a service for use by
>>> other bundles.
>>>
>>> Cheers,
>>> Andreas
>>>
>>> On Jun 1, 2011, at 8:25 PM, Super Wang wrote:
>>>
 Hi folks,

 I'm new to neo4j and I'm going to embed neo4j to my OSGI
>>> environment(without
 Spring) as a component, so I can keep a single instance of graph database
 and can make it available for all other bundles.

 Any ideas about how to implement this?

 Thank you very much.
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Re: [Neo4j] Design question: Del.icio.us

[Josef Holy]

Hi,

few notes from the top of my head on how we modeled this in the past:

User is a Node
Resource (Document) is a Node
Tag is a Node (having a label, language property, can be connected via 
relationships to other Tag Nodes representing its synonyms, can become a 
concept in (tree-)structured thesauri, etc...)

Scenario: User U tags Resource R with Tag T:
- Create special 'TaggingEvent' TE Node, with timestamp property and connect it 
to U, R and T by creating [TE, U], [TE, R] and [TE, T] relationships
- TE nodes are indexed by timestamp, allowing to easily generate 'Tag activity 
streams' for different contexts - for users, resources or even tags (if it 
makes sense)
- create some additional relationship(s) as needed between [U, T], [U, R] and 
[T, R] to simplify graph traversals and also to aggregate/cache the information 
like 'how many times was given R tagged with given T ~ this is f.e. expressed 
by some 'weight' property on the [T,R] relationship - and comes handy for 
generating things like tag clouds (~ get all [T,R] relationships with their 
weights)

Scenario: User U bookmarks Resource R:
- here it may be enough to create only [U,R] relationship with properties like 
timestamp, but we followed similar model as above - create special 
'BookmarkEvent' Node BE, with timestamp and ralationships [BE, U] and  [BE, R] 
and [U,R]
- this again allows to easily create bookmarking activity streams, or to mix 
tagging+bookmarking events into one stream, if there is a requirement to do so.


That's about it.

Hope this helps.


Regards,

Josef.

-- 
www.subject.cz

__
> Od: "Max De Marzi Jr." 
> Komu: Neo4j user discussions 
> Datum: 09.06.2011 08:21
> Předmět: Re: [Neo4j] Design question: Del.icio.us
>
>Aseem,
>
>Which users tagged what? SELECT DISTINCT user_id FROM USER_TAGS WHERE
>bookmark_id = x
>Which bookmarks did a user tag? SELECT DISTINCT bookmark_id FROM
>USER_TAGS WHERE user_id = x
>Which bookmarks were tagged with x? SELECT DISTINCT bookmark_id FROM
>USER_TAGS WHERE tag_id = x
>
>What question are you trying to answer that you can't get from a
>relational table?
>
>I think it's better to make your model depending on the questions you
>are trying to answer.
>
>I have a similar model (users tagging users) and I needed to answer:
>Which users have been tagged by me or my network 6 degrees out?
>What is the tagged distance a user is away from another user?
>
>Turns out, all I needed was User nodes with Tagged links.  User ->
>tagged -> User -> tagged -> User
>Everything else I get from the relational db.
>
>When I start to care about which users have been tagged for by me or
>my network 6 degrees out for this KEYWORD, then I'll create a more
>complex model:
>User -> UserKeyword -> tagged -> UserKeyword -> User
>Keyword  ---/Keyword  ---/
>
>Regards,
>Max
>
>On Thu, Jun 9, 2011 at 12:33 AM, Aseem Kishore  wrote:
>> Also forgot to add: now if you want to show all links (globally) for a given
>> tag, how do you do that? Are you indexing each tag-link (as a key-value
>> pair) every time a tag is added? Removing from the index every time a tag is
>> deleted?
>>
>> Thanks,
>>
>> Aseem
>>
>> On Wed, Jun 8, 2011 at 10:31 PM, Aseem Kishore 
>> wrote:
>>
>>> I forgot to state this, but a key requirement of tags of course is that you
>>> can apply multiple of them to the same link.
>>>
>>> Would you still go that route then?
>>>
>>> If you want to delete a link from your bookmarks, it's a matter then of
>>> deleting each tag edge?
>>>
>>> Aseem
>>>
>>>
>>> On Wed, Jun 8, 2011 at 10:28 PM, Siddhartha Kasivajhula <
>>> countvajh...@gmail.com> wrote:
>>>
 Couldn't you use edges for "tags" instead of nodes?

 user1 --tag--> link1
 user2 --tag--> link1
 user1 --tag--> link2


 On Wed, Jun 8, 2011 at 10:23 PM, Aseem Kishore >>> >wrote:

 > Hi guys,
 >
 > We're thinking about implementing tags in our system, and we're
 pondering a
 > few ideas for how we'd go about it, and none of them seem perfect. I'd
 like
 > to ask you guys: how would you design an analogous case: Del.icio.us?
 >
 > At the core, *users bookmark links*, so it makes sense to have "users"
 and
 > "links" as types of nodes, and "bookmark" as the type of edge that
 connects
 > them. Now, you can see all the links a given user has bookmarked, and
 all
 > the users that have bookmarked a given link.
 >
 > Now users can also *tag* links, of course, but the most interesting
 > requirement is that, when I'm looking at *my links*, I only want to see
 *my
 > tags*. Thus, tags can't be tied just to links; they have to be tied to
 > users
 > too. But most importantly, you have to maintain *which* user and *which*
 > link *each* tag is for.
 >
 > Thus, it seems most intuitive to us if we could have "tags" be nodes
 > that *point
 >

[Neo4j] Unexpected error

[Massimo Lusetti]

Hi All,
  I'm going to give a try again to my apps on neo4j with the current
1.4.M03 implementations.

After a while I got this stack trace for which I hope someone could
give me a clue:

org.neo4j.graphdb.TransactionFailureException: Unable to commit transaction
at 
org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:104)
at 
my.services.graphdb.Neo4jSourceImpl.addNodes(Neo4jSourceImpl.java:734)
at $Neo4jSource_1306fa8fc0b.addNodes($Neo4jSource_1306fa8fc0b.java)
at 
my.services.input.RowLineProcessorImpl.processLogLines(RowLineProcessorImpl.java:86)
at 
$RowLineProcessor_1306fa8fc11.processLogLines($RowLineProcessor_1306fa8fc11.java)
at 
$RowLineProcessor_1306fa8fc0f.processLogLines($RowLineProcessor_1306fa8fc0f.java)
at 
my.services.input.PickUpPollerImpl$DirPoller.run(PickUpPollerImpl.java:168)
at java.util.TimerThread.mainLoop(Timer.java:534)
at java.util.TimerThread.run(Timer.java:484)
Caused by: javax.transaction.HeuristicMixedException: Unable to
rollback ---> error in commit: java.lang.OutOfMemoryError: Java heap
space ---> error code for rollback: 0
at 
org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:669)
at 
org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:588)
at 
org.neo4j.kernel.impl.transaction.TransactionImpl.commit(TransactionImpl.java:107)
at 
org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:85)
... 8 more
Caused by: javax.transaction.xa.XAException: Unknown
xid[GlobalId[NEOKERNL|9147195978689142839|809], BranchId[ 52 49 52 49
52 49 ]]
at 
org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.rollback(XaResourceManager.java:470)
at 
org.neo4j.kernel.impl.transaction.xaframework.XaResourceHelpImpl.rollback(XaResourceHelpImpl.java:111)
at 
org.neo4j.kernel.impl.transaction.TransactionImpl.doRollback(TransactionImpl.java:533)
at 
org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:651)
... 11 more

This are the command line options used to start the JVM:

-Djava.awt.headless=true -XX:MaxPermSize=512m -Xms512m -Xmx2048m

The box has 8G of RAM

At the time of the exception the db had 4482380 nodes and 94613402
relationships, a lot of my relations goes to a single node.

The operations as usual are simple insert in the DB with some checks
on Index (RelationalIndex and plain Index).

Any help is really appreciated

Cheers
-- 
Massimo
http://meridio.blogspot.com
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Re: [Neo4j] Design question: Del.icio.us

[Michael Hunger]

Perhaps it is really best to model the "bookmark" as node as well. Which is how 
you would model a hypergraph in Neo4j.

Then it is natural to have tag nodes pointing to the bookmark node.

For instance you want to store when user bookmarked the link, so that you can 
order his bookmarks (recent first). 
(This can be done by property + indexing on the relationship, or by having 
timeline nodes, which connect bookmarks that were added on a given day/hour).
Or you want him to be able to have a comment thread on the bookmark (not the 
link). And more.

Cheers

Michael

Am 09.06.2011 um 08:21 schrieb Max De Marzi Jr.:

> Aseem,
> 
> Which users tagged what? SELECT DISTINCT user_id FROM USER_TAGS WHERE
> bookmark_id = x
> Which bookmarks did a user tag? SELECT DISTINCT bookmark_id FROM
> USER_TAGS WHERE user_id = x
> Which bookmarks were tagged with x? SELECT DISTINCT bookmark_id FROM
> USER_TAGS WHERE tag_id = x
> 
> What question are you trying to answer that you can't get from a
> relational table?
> 
> I think it's better to make your model depending on the questions you
> are trying to answer.
> 
> I have a similar model (users tagging users) and I needed to answer:
> Which users have been tagged by me or my network 6 degrees out?
> What is the tagged distance a user is away from another user?
> 
> Turns out, all I needed was User nodes with Tagged links.  User ->
> tagged -> User -> tagged -> User
> Everything else I get from the relational db.
> 
> When I start to care about which users have been tagged for by me or
> my network 6 degrees out for this KEYWORD, then I'll create a more
> complex model:
> User -> UserKeyword -> tagged -> UserKeyword -> User
>Keyword  ---/Keyword  ---/
> 
> Regards,
> Max
> 
> On Thu, Jun 9, 2011 at 12:33 AM, Aseem Kishore  
> wrote:
>> Also forgot to add: now if you want to show all links (globally) for a given
>> tag, how do you do that? Are you indexing each tag-link (as a key-value
>> pair) every time a tag is added? Removing from the index every time a tag is
>> deleted?
>> 
>> Thanks,
>> 
>> Aseem
>> 
>> On Wed, Jun 8, 2011 at 10:31 PM, Aseem Kishore 
>> wrote:
>> 
>>> I forgot to state this, but a key requirement of tags of course is that you
>>> can apply multiple of them to the same link.
>>> 
>>> Would you still go that route then?
>>> 
>>> If you want to delete a link from your bookmarks, it's a matter then of
>>> deleting each tag edge?
>>> 
>>> Aseem
>>> 
>>> 
>>> On Wed, Jun 8, 2011 at 10:28 PM, Siddhartha Kasivajhula <
>>> countvajh...@gmail.com> wrote:
>>> 
 Couldn't you use edges for "tags" instead of nodes?
 
 user1 --tag--> link1
 user2 --tag--> link1
 user1 --tag--> link2
 
 
 On Wed, Jun 8, 2011 at 10:23 PM, Aseem Kishore  wrote:
 
> Hi guys,
> 
> We're thinking about implementing tags in our system, and we're
 pondering a
> few ideas for how we'd go about it, and none of them seem perfect. I'd
 like
> to ask you guys: how would you design an analogous case: Del.icio.us?
> 
> At the core, *users bookmark links*, so it makes sense to have "users"
 and
> "links" as types of nodes, and "bookmark" as the type of edge that
 connects
> them. Now, you can see all the links a given user has bookmarked, and
 all
> the users that have bookmarked a given link.
> 
> Now users can also *tag* links, of course, but the most interesting
> requirement is that, when I'm looking at *my links*, I only want to see
 *my
> tags*. Thus, tags can't be tied just to links; they have to be tied to
> users
> too. But most importantly, you have to maintain *which* user and *which*
> link *each* tag is for.
> 
> Thus, it seems most intuitive to us if we could have "tags" be nodes
> that *point
> to the "bookmark" edges*. Unfortunately, that's a hypergraph, which
 Neo4j
> doesn't support.
> 
> We could use intermediate nodes for bookmarks maybe, but that sort of
 sucks
> to lose the intuitiveness of the graph and introduce redundant edges,
 more
> complexity which makes consistency harder, etc.
> 
> We have some other ideas, but I'm curious if any of you guys have
 thought
> about this already or have done it, or if you guys have thoughts. Thanks
 in
> advance!
> 
> Aseem
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