date:20110715

Thomas,

just a quick info, I pulled the project locally and fixed the compilation 
issues (they pointed all to a parent-pom 7 that has somehow disappeared from 
our m2 repository).

Updating it to 9 helped. So the workaround is:

neo4j-graph-matching
neo4j-meta-model
neo4j-rdf
neo4j-rdf-sail
neo4j-rdf-sparql
neo4j-utils-1.1 - tag 1.1
neo4j-sail-test

- pull those projects and build them locally, fixing the parent pom and for 
some projects the repository  
has to be added to build.

Then you have the things locally and can build and run neo4j-sail-test.

repositories
 repository
  idneo4j-public-repository/id
  namePublically available Maven 2 repository for Neo4j/name
  urlhttp://m2.neo4j.org/url
  snapshots
enabledtrue/enabled
  /snapshots
/repository
  /repositories

On the other hand we thought of creating a new github account for these legacy 
projects (neo4j-contrib) and moving them there (and updating them to the latest 
neo4j-versions  APIs).

I don't know if I can make that work today.

Cheers

Michael

Am 15.07.2011 um 08:43 schrieb Thomas Fritz:

 Hi,
 Thank you very much! Looking forward to it!
 Kind regards
 Am 14.07.2011 22:55 schrieb Michael Hunger 
 michael.hun...@neotechnology.com:
 Thomas,
 
 yes I can confirm that, don't know why the one snapshot pom is not on the
 server.
 We can fix that but right now I will only be able to provide a temporary
 workaround.
 
 Will ping you later with that.
 
 Cheers
 
 Michael
 
 Am 14.07.2011 um 22:48 schrieb Thomas Fritz:
 
 Can anyone confirm that the neo4j-rdf, sail, sparql libs are not working?
 Will it be fixed?
 Kind regards
 Am 14.07.2011 17:33 schrieb Thomas Fritz fritz...@gmail.com:
 Hi,
 
 No, it is of course not in my own pom.xml - the projects pom.xml - it
 is in the Neo4J dependencies (rdf, sparql, sail). I think it has to be
 fixed from Neo4J and has to be updated on maven central?
 
 Kind regards
 
 
 
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 It should be directly in your pom.xml at the top, there is an xml
 section
 with the parent element.
 
 Cheers
 
 Michael
 
 If that is not in your local pom, try to pull that project from svn
 remove that section and build it locally.
 
 
 Am 14.07.2011 um 14:49 schrieb Thomas Fritz:
 
 Thanks for answering!
 How can i remove the parent section from the pom.xml? It is in the
 dependency project maven tries to resolve, right? So how and where can
 i edit it?
 
 Kind regards
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 You can just try to remove the
 
 parent
 ...
 /parent
 
 block, that should work. Those are just meant for being built
 integrated in a larger system build.
 
 Cheers
 
 Michael
 
 Am 14.07.2011 um 13:23 schrieb Thomas Fritz:
 
 Hi,
 
 Who can fix this? As i can see one of the neo4j-rdf dependencys
 pulls
 that dependency in.
 Or can i bypass and fix it locally until it is fixed?
 
 Thanks
 Kind regards
 
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Peter Neubauer neubauer.pe...@gmail.com:
 Not sure but parent - pom should maybe be parent - central?
 
 /peter
 
 Sent from my phone.
 On Jul 14, 2011 12:23 PM, Thomas Fritz fritz...@gmail.com
 wrote:
 I have tried the code example from here:
 http://datablend.be/?p=411.
 I downloaded the source from github -
 https://github.com/datablend/neo4j-sail-test . I have also tried
 this
 example: https://github.com/aduric/Neo-SPARQL-Test
 They both can not be build with maven. The parent-pom can not be
 found by maven. I am using netbeans 7 with bundled maven 3.0.3:
 
 code
 
 
 Building Unnamed - neo4j-sail-test:neo4j-sail-test:jar:1.0
 task-segment: [clean, install]
 
 
 [clean:clean]
 Deleting directory
 /home/thomas/Projekte/Neo4J-Tests/neo4j-sail-test/target
 [resources:resources]
 Using platform encoding (UTF-8 actually) to copy filtered
 resources,
 i.e. build is platform dependent!
 Copying 1 resource
 snapshot org.neo4j:neo4j-rdf-sail:0.6-SNAPSHOT: checking for
 updates
 from central
 snapshot org.neo4j:neo4j-rdf-sail:0.6-SNAPSHOT: checking for
 updates
 from aduna-repo
 snapshot org.neo4j:neo4j-kernel:1.1-SNAPSHOT: checking for updates
 from aduna-repo
 snapshot org.neo4j:neo4j-kernel:1.1-SNAPSHOT: checking for updates
 from neo4j-snapshot-repository
 snapshot org.neo4j:neo4j-kernel:1.1-SNAPSHOT: checking for updates
 from sonatype-nexus-snapshots
 snapshot org.neo4j:neo4j-rdf:0.7-SNAPSHOT: checking for updates
 from
 aduna-repo
 snapshot org.neo4j:neo4j-rdf:0.7-SNAPSHOT: checking for

Re: [Neo4j] RDF Examples not working - parent-pom

2011-07-15 Thread Thomas Fritz

Thanks for the fast answer, i am just trying it out at the moment.


But your answer brings me to another question. You wrote legacy
projects. I know Neo4J is no RDF/Triple/Quad Store but what are the
plans for the RDF libs to use Neo4J as such?

Kind regards.



---
Thomas FRITZ
web http://fritzthomas.com
twitter http://twitter.com/thomasf



2011/7/15 Michael Hunger michael.hun...@neotechnology.com:
 Thomas,

 just a quick info, I pulled the project locally and fixed the compilation 
 issues (they pointed all to a parent-pom 7 that has somehow disappeared from 
 our m2 repository).

 Updating it to 9 helped. So the workaround is:

 neo4j-graph-matching
 neo4j-meta-model
 neo4j-rdf
 neo4j-rdf-sail
 neo4j-rdf-sparql
 neo4j-utils-1.1 - tag 1.1
 neo4j-sail-test

 - pull those projects and build them locally, fixing the parent pom and for 
 some projects the repository
 has to be added to build.

 Then you have the things locally and can build and run neo4j-sail-test.

 repositories
  repository
                  idneo4j-public-repository/id
                  namePublically available Maven 2 repository for 
 Neo4j/name
                  urlhttp://m2.neo4j.org/url
                  snapshots
                    enabledtrue/enabled
                  /snapshots
                /repository
              /repositories

 On the other hand we thought of creating a new github account for these 
 legacy projects (neo4j-contrib) and moving them there (and updating them to 
 the latest neo4j-versions  APIs).

 I don't know if I can make that work today.

 Cheers

 Michael

 Am 15.07.2011 um 08:43 schrieb Thomas Fritz:

 Hi,
 Thank you very much! Looking forward to it!
 Kind regards
 Am 14.07.2011 22:55 schrieb Michael Hunger 
 michael.hun...@neotechnology.com:
 Thomas,

 yes I can confirm that, don't know why the one snapshot pom is not on the
 server.
 We can fix that but right now I will only be able to provide a temporary
 workaround.

 Will ping you later with that.

 Cheers

 Michael

 Am 14.07.2011 um 22:48 schrieb Thomas Fritz:

 Can anyone confirm that the neo4j-rdf, sail, sparql libs are not working?
 Will it be fixed?
 Kind regards
 Am 14.07.2011 17:33 schrieb Thomas Fritz fritz...@gmail.com:
 Hi,

 No, it is of course not in my own pom.xml - the projects pom.xml - it
 is in the Neo4J dependencies (rdf, sparql, sail). I think it has to be
 fixed from Neo4J and has to be updated on maven central?

 Kind regards





 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf



 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 It should be directly in your pom.xml at the top, there is an xml
 section
 with the parent element.

 Cheers

 Michael

 If that is not in your local pom, try to pull that project from svn
 remove that section and build it locally.


 Am 14.07.2011 um 14:49 schrieb Thomas Fritz:

 Thanks for answering!
 How can i remove the parent section from the pom.xml? It is in the
 dependency project maven tries to resolve, right? So how and where can
 i edit it?

 Kind regards


 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf



 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 You can just try to remove the

 parent
 ...
 /parent

 block, that should work. Those are just meant for being built
 integrated in a larger system build.

 Cheers

 Michael

 Am 14.07.2011 um 13:23 schrieb Thomas Fritz:

 Hi,

 Who can fix this? As i can see one of the neo4j-rdf dependencys
 pulls
 that dependency in.
 Or can i bypass and fix it locally until it is fixed?

 Thanks
 Kind regards



 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf



 2011/7/14 Peter Neubauer neubauer.pe...@gmail.com:
 Not sure but parent - pom should maybe be parent - central?

 /peter

 Sent from my phone.
 On Jul 14, 2011 12:23 PM, Thomas Fritz fritz...@gmail.com
 wrote:
 I have tried the code example from here:
 http://datablend.be/?p=411.
 I downloaded the source from github -
 https://github.com/datablend/neo4j-sail-test . I have also tried
 this
 example: https://github.com/aduric/Neo-SPARQL-Test
 They both can not be build with maven. The parent-pom can not be
 found by maven. I am using netbeans 7 with bundled maven 3.0.3:

 code

 
 Building Unnamed - neo4j-sail-test:neo4j-sail-test:jar:1.0
 task-segment: [clean, install]

 
 [clean:clean]
 Deleting directory
 /home/thomas/Projekte/Neo4J-Tests/neo4j-sail-test/target
 [resources:resources]
 Using platform encoding (UTF-8 actually) to copy filtered
 resources,
 i.e. build is platform dependent!
 Copying 1 resource
 snapshot org.neo4j:neo4j-rdf-sail:0.6-SNAPSHOT: checking for
 updates
 from central
 snapshot org.neo4j:neo4j-rdf-sail:0.6-SNAPSHOT: checking for
 updates
 from aduna-repo
 snapshot org.neo4j:neo4j-kernel:1.1-SNAPSHOT:

Re: [Neo4j] RDF Examples not working - parent-pom

Hi Thomas,

there is a more complete rdf / sail implementation in tinkerpop that runs 
easily on top of neo4j. Please check that out and report back if it fits your 
needs:

https://github.com/tinkerpop/blueprints/wiki/Sail-Ouplementation

I already pinged Davy asking him to port his example to this library running on 
top of Neo4j.

Cheers

Michael

Am 15.07.2011 um 10:35 schrieb Thomas Fritz:

 Thanks for the fast answer, i am just trying it out at the moment.
 
 
 But your answer brings me to another question. You wrote legacy
 projects. I know Neo4J is no RDF/Triple/Quad Store but what are the
 plans for the RDF libs to use Neo4J as such?
 
 Kind regards.
 
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/15 Michael Hunger michael.hun...@neotechnology.com:
 Thomas,
 
 just a quick info, I pulled the project locally and fixed the compilation 
 issues (they pointed all to a parent-pom 7 that has somehow disappeared from 
 our m2 repository).
 
 Updating it to 9 helped. So the workaround is:
 
 neo4j-graph-matching
 neo4j-meta-model
 neo4j-rdf
 neo4j-rdf-sail
 neo4j-rdf-sparql
 neo4j-utils-1.1 - tag 1.1
 neo4j-sail-test
 
 - pull those projects and build them locally, fixing the parent pom and for 
 some projects the repository
 has to be added to build.
 
 Then you have the things locally and can build and run neo4j-sail-test.
 
 repositories
  repository
  idneo4j-public-repository/id
  namePublically available Maven 2 repository for 
 Neo4j/name
  urlhttp://m2.neo4j.org/url
  snapshots
enabledtrue/enabled
  /snapshots
/repository
  /repositories
 
 On the other hand we thought of creating a new github account for these 
 legacy projects (neo4j-contrib) and moving them there (and updating them to 
 the latest neo4j-versions  APIs).
 
 I don't know if I can make that work today.
 
 Cheers
 
 Michael
 
 Am 15.07.2011 um 08:43 schrieb Thomas Fritz:
 
 Hi,
 Thank you very much! Looking forward to it!
 Kind regards
 Am 14.07.2011 22:55 schrieb Michael Hunger 
 michael.hun...@neotechnology.com:
 Thomas,
 
 yes I can confirm that, don't know why the one snapshot pom is not on the
 server.
 We can fix that but right now I will only be able to provide a temporary
 workaround.
 
 Will ping you later with that.
 
 Cheers
 
 Michael
 
 Am 14.07.2011 um 22:48 schrieb Thomas Fritz:
 
 Can anyone confirm that the neo4j-rdf, sail, sparql libs are not working?
 Will it be fixed?
 Kind regards
 Am 14.07.2011 17:33 schrieb Thomas Fritz fritz...@gmail.com:
 Hi,
 
 No, it is of course not in my own pom.xml - the projects pom.xml - it
 is in the Neo4J dependencies (rdf, sparql, sail). I think it has to be
 fixed from Neo4J and has to be updated on maven central?
 
 Kind regards
 
 
 
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 It should be directly in your pom.xml at the top, there is an xml
 section
 with the parent element.
 
 Cheers
 
 Michael
 
 If that is not in your local pom, try to pull that project from svn
 remove that section and build it locally.
 
 
 Am 14.07.2011 um 14:49 schrieb Thomas Fritz:
 
 Thanks for answering!
 How can i remove the parent section from the pom.xml? It is in the
 dependency project maven tries to resolve, right? So how and where can
 i edit it?
 
 Kind regards
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 You can just try to remove the
 
 parent
 ...
 /parent
 
 block, that should work. Those are just meant for being built
 integrated in a larger system build.
 
 Cheers
 
 Michael
 
 Am 14.07.2011 um 13:23 schrieb Thomas Fritz:
 
 Hi,
 
 Who can fix this? As i can see one of the neo4j-rdf dependencys
 pulls
 that dependency in.
 Or can i bypass and fix it locally until it is fixed?
 
 Thanks
 Kind regards
 
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Peter Neubauer neubauer.pe...@gmail.com:
 Not sure but parent - pom should maybe be parent - central?
 
 /peter
 
 Sent from my phone.
 On Jul 14, 2011 12:23 PM, Thomas Fritz fritz...@gmail.com
 wrote:
 I have tried the code example from here:
 http://datablend.be/?p=411.
 I downloaded the source from github -
 https://github.com/datablend/neo4j-sail-test . I have also tried
 this
 example: https://github.com/aduric/Neo-SPARQL-Test
 They both can not be build with maven. The parent-pom can not be
 found by maven. I am using netbeans 7 with bundled maven 3.0.3:
 
 code
 
 
 Building Unnamed - neo4j-sail-test:neo4j-sail-test:jar:1.0
 task-segment: [clean, install]

Re: [Neo4j] We now have an automatic discussion forum on the Nabble Mailing List Archive

2011-07-15 Thread Pablo Pareja

Cool !

It looks much more usable than the mailing list ;)

Cheers,

Pablo

On Thu, Jul 14, 2011 at 10:04 PM, Michael Hunger 
michael.hun...@neotechnology.com wrote:

 I forgot two things:

 1) I changed all the links on neo4j.org that previously pointed to the
 ugly mailman archive page to point to nabble instead.
 2) The discussion mailing list vs. forum is over, I'm very happy about
 that.

 Michael

 Am 14.07.2011 um 22:01 schrieb Michael Hunger:

  They seem to have updated their UI massively, it now looks and works like
 a
  forum while interacting with this neo4j mailing list.
 
  Landing page is here: http://neo4j-user-list.438527.n3.nabble.com
 
  You can browse and search the forums from there, some hints about mailing
  list usage and forum integration can be found here:
 
 http://neo4j-user-list.438527.n3.nabble.com/mailing_list/MailingListOptions.jtp?forum=438527
 
  There are also some more options for people that are interested like
  Advanced Search, People, Topics view and an green online dot for logged
 in
  people.
 
  It is embeddable as well, so we'll investigate if and how to embed it on
  neo4j.org.
 
  If you register once at nabble with the same email address you used for
 this
  list, you can reply and also post from there without ever having to use
 your
  e-mail program. (You can even turn off to receive messages, so all your
  interaction can be through that forum).
 
  You can also send HTML emails, but I strongly discourage that, if you
 don't
  need it (for instance for embedding relevant images or formatted source
 code
  (monospace).
 
  Cheers
 
  Michael
 
  P.S. This post was written on nabble, so no e-mail program was harmed.
 
 
 http://neo4j-user-list.438527.n3.nabble.com/file/n3170182/reality_is_a_graph.png
 
  --
  View this message in context:
 http://neo4j-user-list.438527.n3.nabble.com/We-now-have-an-automatic-discussion-forum-on-the-Nabble-Mailing-List-Archive-tp3170182p3170182.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

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




-- 
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

Re: [Neo4j] RDF Examples not working - parent-pom

Thomas,

I imported the repositories from svn, repaired them and pushed them to github.

https://github.com/neo4j-contrib

Next steps will be updating them to the current version (1.4.)

Cheers

Michael

Am 15.07.2011 um 10:35 schrieb Thomas Fritz:

 Thanks for the fast answer, i am just trying it out at the moment.
 
 
 But your answer brings me to another question. You wrote legacy
 projects. I know Neo4J is no RDF/Triple/Quad Store but what are the
 plans for the RDF libs to use Neo4J as such?
 
 Kind regards.
 
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/15 Michael Hunger michael.hun...@neotechnology.com:
 Thomas,
 
 just a quick info, I pulled the project locally and fixed the compilation 
 issues (they pointed all to a parent-pom 7 that has somehow disappeared from 
 our m2 repository).
 
 Updating it to 9 helped. So the workaround is:
 
 neo4j-graph-matching
 neo4j-meta-model
 neo4j-rdf
 neo4j-rdf-sail
 neo4j-rdf-sparql
 neo4j-utils-1.1 - tag 1.1
 neo4j-sail-test
 
 - pull those projects and build them locally, fixing the parent pom and for 
 some projects the repository
 has to be added to build.
 
 Then you have the things locally and can build and run neo4j-sail-test.
 
 repositories
  repository
  idneo4j-public-repository/id
  namePublically available Maven 2 repository for 
 Neo4j/name
  urlhttp://m2.neo4j.org/url
  snapshots
enabledtrue/enabled
  /snapshots
/repository
  /repositories
 
 On the other hand we thought of creating a new github account for these 
 legacy projects (neo4j-contrib) and moving them there (and updating them to 
 the latest neo4j-versions  APIs).
 
 I don't know if I can make that work today.
 
 Cheers
 
 Michael
 
 Am 15.07.2011 um 08:43 schrieb Thomas Fritz:
 
 Hi,
 Thank you very much! Looking forward to it!
 Kind regards
 Am 14.07.2011 22:55 schrieb Michael Hunger 
 michael.hun...@neotechnology.com:
 Thomas,
 
 yes I can confirm that, don't know why the one snapshot pom is not on the
 server.
 We can fix that but right now I will only be able to provide a temporary
 workaround.
 
 Will ping you later with that.
 
 Cheers
 
 Michael
 
 Am 14.07.2011 um 22:48 schrieb Thomas Fritz:
 
 Can anyone confirm that the neo4j-rdf, sail, sparql libs are not working?
 Will it be fixed?
 Kind regards
 Am 14.07.2011 17:33 schrieb Thomas Fritz fritz...@gmail.com:
 Hi,
 
 No, it is of course not in my own pom.xml - the projects pom.xml - it
 is in the Neo4J dependencies (rdf, sparql, sail). I think it has to be
 fixed from Neo4J and has to be updated on maven central?
 
 Kind regards
 
 
 
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 It should be directly in your pom.xml at the top, there is an xml
 section
 with the parent element.
 
 Cheers
 
 Michael
 
 If that is not in your local pom, try to pull that project from svn
 remove that section and build it locally.
 
 
 Am 14.07.2011 um 14:49 schrieb Thomas Fritz:
 
 Thanks for answering!
 How can i remove the parent section from the pom.xml? It is in the
 dependency project maven tries to resolve, right? So how and where can
 i edit it?
 
 Kind regards
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 You can just try to remove the
 
 parent
 ...
 /parent
 
 block, that should work. Those are just meant for being built
 integrated in a larger system build.
 
 Cheers
 
 Michael
 
 Am 14.07.2011 um 13:23 schrieb Thomas Fritz:
 
 Hi,
 
 Who can fix this? As i can see one of the neo4j-rdf dependencys
 pulls
 that dependency in.
 Or can i bypass and fix it locally until it is fixed?
 
 Thanks
 Kind regards
 
 
 
 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf
 
 
 
 2011/7/14 Peter Neubauer neubauer.pe...@gmail.com:
 Not sure but parent - pom should maybe be parent - central?
 
 /peter
 
 Sent from my phone.
 On Jul 14, 2011 12:23 PM, Thomas Fritz fritz...@gmail.com
 wrote:
 I have tried the code example from here:
 http://datablend.be/?p=411.
 I downloaded the source from github -
 https://github.com/datablend/neo4j-sail-test . I have also tried
 this
 example: https://github.com/aduric/Neo-SPARQL-Test
 They both can not be build with maven. The parent-pom can not be
 found by maven. I am using netbeans 7 with bundled maven 3.0.3:
 
 code
 
 
 Building Unnamed - neo4j-sail-test:neo4j-sail-test:jar:1.0
 task-segment: [clean, install]
 
 
 [clean:clean]
 Deleting directory
 /home/thomas/Projekte/Neo4J-Tests/neo4j-sail-test/target
 [resources:resources]
 Using platform

Re: [Neo4j] RDF Examples not working - parent-pom

2011-07-15 Thread Thomas Fritz

Thank you so far! :)





---
Thomas FRITZ
web http://fritzthomas.com
twitter http://twitter.com/thomasf



2011/7/15 Michael Hunger michael.hun...@neotechnology.com:
 Thomas,

 I imported the repositories from svn, repaired them and pushed them to github.

 https://github.com/neo4j-contrib

 Next steps will be updating them to the current version (1.4.)

 Cheers

 Michael

 Am 15.07.2011 um 10:35 schrieb Thomas Fritz:

 Thanks for the fast answer, i am just trying it out at the moment.


 But your answer brings me to another question. You wrote legacy
 projects. I know Neo4J is no RDF/Triple/Quad Store but what are the
 plans for the RDF libs to use Neo4J as such?

 Kind regards.



 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf



 2011/7/15 Michael Hunger michael.hun...@neotechnology.com:
 Thomas,

 just a quick info, I pulled the project locally and fixed the compilation 
 issues (they pointed all to a parent-pom 7 that has somehow disappeared 
 from our m2 repository).

 Updating it to 9 helped. So the workaround is:

 neo4j-graph-matching
 neo4j-meta-model
 neo4j-rdf
 neo4j-rdf-sail
 neo4j-rdf-sparql
 neo4j-utils-1.1 - tag 1.1
 neo4j-sail-test

 - pull those projects and build them locally, fixing the parent pom and for 
 some projects the repository
 has to be added to build.

 Then you have the things locally and can build and run neo4j-sail-test.

 repositories
  repository
                  idneo4j-public-repository/id
                  namePublically available Maven 2 repository for 
 Neo4j/name
                  urlhttp://m2.neo4j.org/url
                  snapshots
                    enabledtrue/enabled
                  /snapshots
                /repository
              /repositories

 On the other hand we thought of creating a new github account for these 
 legacy projects (neo4j-contrib) and moving them there (and updating them to 
 the latest neo4j-versions  APIs).

 I don't know if I can make that work today.

 Cheers

 Michael

 Am 15.07.2011 um 08:43 schrieb Thomas Fritz:

 Hi,
 Thank you very much! Looking forward to it!
 Kind regards
 Am 14.07.2011 22:55 schrieb Michael Hunger 
 michael.hun...@neotechnology.com:
 Thomas,

 yes I can confirm that, don't know why the one snapshot pom is not on the
 server.
 We can fix that but right now I will only be able to provide a temporary
 workaround.

 Will ping you later with that.

 Cheers

 Michael

 Am 14.07.2011 um 22:48 schrieb Thomas Fritz:

 Can anyone confirm that the neo4j-rdf, sail, sparql libs are not working?
 Will it be fixed?
 Kind regards
 Am 14.07.2011 17:33 schrieb Thomas Fritz fritz...@gmail.com:
 Hi,

 No, it is of course not in my own pom.xml - the projects pom.xml - it
 is in the Neo4J dependencies (rdf, sparql, sail). I think it has to be
 fixed from Neo4J and has to be updated on maven central?

 Kind regards





 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf



 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 It should be directly in your pom.xml at the top, there is an xml
 section
 with the parent element.

 Cheers

 Michael

 If that is not in your local pom, try to pull that project from svn
 remove that section and build it locally.


 Am 14.07.2011 um 14:49 schrieb Thomas Fritz:

 Thanks for answering!
 How can i remove the parent section from the pom.xml? It is in the
 dependency project maven tries to resolve, right? So how and where can
 i edit it?

 Kind regards


 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf



 2011/7/14 Michael Hunger michael.hun...@neotechnology.com:
 You can just try to remove the

 parent
 ...
 /parent

 block, that should work. Those are just meant for being built
 integrated in a larger system build.

 Cheers

 Michael

 Am 14.07.2011 um 13:23 schrieb Thomas Fritz:

 Hi,

 Who can fix this? As i can see one of the neo4j-rdf dependencys
 pulls
 that dependency in.
 Or can i bypass and fix it locally until it is fixed?

 Thanks
 Kind regards



 ---
 Thomas FRITZ
 web http://fritzthomas.com
 twitter http://twitter.com/thomasf



 2011/7/14 Peter Neubauer neubauer.pe...@gmail.com:
 Not sure but parent - pom should maybe be parent - central?

 /peter

 Sent from my phone.
 On Jul 14, 2011 12:23 PM, Thomas Fritz fritz...@gmail.com
 wrote:
 I have tried the code example from here:
 http://datablend.be/?p=411.
 I downloaded the source from github -
 https://github.com/datablend/neo4j-sail-test . I have also tried
 this
 example: https://github.com/aduric/Neo-SPARQL-Test
 They both can not be build with maven. The parent-pom can not be
 found by maven. I am using netbeans 7 with bundled maven 3.0.3:

 code

 
 Building Unnamed - neo4j-sail-test:neo4j-sail-test:jar:1.0
 task-segment: [clean, install]

 
 [clean:clean]
 Deleting

[Neo4j] Getting sorted results from a traversal

HI!
 I am on the situation of having to traverse neo4j, and then expect the
resultset returned to be ordered in a certain order. I've been researching a
bit over the traversal API, but I did not find anything related to that. I
really will appreciate any tip on that!!

BTW  I expect to be possible right?, as we have in relational the ordering,
or on redis, etc...

/purbon

-- 
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Re: [Neo4j] Getting sorted results from a traversal

Hi Pere,

To sort you need to have all your results. 

Thus, in Gremlin (and hopefully you can do the mapping to the core Neo4j 
traverser framework),

results = []
g.v(1).out('friend').out('likes')  results // what my friends like
results.sort{a,b - a.name = b.name} // sort resultant vertices by name

In short, once you have the result of your traversal, you can then apply a 
comparator to the Collection to sort it as you please --- its just Java 
comparators.

See ya,
Marko.

http://markorodriguez.com

On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:

 HI!
 I am on the situation of having to traverse neo4j, and then expect the
 resultset returned to be ordered in a certain order. I've been researching a
 bit over the traversal API, but I did not find anything related to that. I
 really will appreciate any tip on that!!
 
 BTW  I expect to be possible right?, as we have in relational the ordering,
 or on redis, etc...
 
 /purbon
 
 -- 
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 Neo4j mailing list
 User@lists.neo4j.org
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Re: [Neo4j] Getting sorted results from a traversal

2011-07-15 Thread Niels Hoogeveen

Hi,You basically have two options. If your result set is not too big, you can 
sort it in memory, though that approach may consume too much memory if the 
result set is very large. In that case you can use SortedTree (see: 
https://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree).
 This allows you to layout the relationships you want to traverse in sorted 
order. 
Niels
 Date: Fri, 15 Jul 2011 16:06:44 +0200
 From: p...@moviepilot.com
 To: user@lists.neo4j.org
 Subject: [Neo4j] Getting sorted results from a traversal

 HI!
  I am on the situation of having to traverse neo4j, and then expect the
 resultset returned to be ordered in a certain order. I've been researching a
 bit over the traversal API, but I did not find anything related to that. I
 really will appreciate any tip on that!!

 BTW  I expect to be possible right?, as we have in relational the ordering,
 or on redis, etc...

 /purbon

 -- 
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 Neo4j mailing list
 User@lists.neo4j.org
 https://lists.neo4j.org/mailman/listinfo/user

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Re: [Neo4j] Getting sorted results from a traversal

Well, this is great if I want to do all the math in memory, but I expect to
do the computation by the db.

/ purbon

On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:

 Hi Pere,

 To sort you need to have all your results.

 Thus, in Gremlin (and hopefully you can do the mapping to the core Neo4j
 traverser framework),

 results = []
 g.v(1).out('friend').out('likes')  results // what my friends like
 results.sort{a,b - a.name = b.name} // sort resultant vertices by name

 In short, once you have the result of your traversal, you can then apply a
 comparator to the Collection to sort it as you please --- its just Java
 comparators.

 See ya,
 Marko.

 http://markorodriguez.com

 On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:

  HI!
  I am on the situation of having to traverse neo4j, and then expect the
  resultset returned to be ordered in a certain order. I've been
 researching a
  bit over the traversal API, but I did not find anything related to that.
 I
  really will appreciate any tip on that!!
 
  BTW  I expect to be possible right?, as we have in relational the
 ordering,
  or on redis, etc...
 
  /purbon
 
  --
  Pere Urbon-Bayes
  moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
  Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
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Re: [Neo4j] [Blog Post] Graphs, Brains, and Gremlin

Cool post, Marko!

Added a comment and a book recommendation to your blog.

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
Behalf Of Marko Rodriguez
Sent: Thursday, July 14, 2011 4:32 PM
To: gremlin-us...@googlegroups.com
Cc: Neo4j user discussions; orient-database
Subject: [Neo4j] [Blog Post] Graphs, Brains, and Gremlin

Howdy ho,

If a graph database was simply another way to evaluate the same style of 
queries/computations as relational/document/etc. database, then my mind would 
find solace elsewhere.

Fortunately, graph databases offer a unique vantage point on data. Data can be 
slithered through like water rushing through streams and as such, has various 
correlations to natural information processing systems such as the brain. To 
articulate this perspective, I dropped a blog post.

http://markorodriguez.com/2011/07/14/graphs-brains-and-gremlin/

Boo yea,
Marko.

http://markorodriguez.com

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Re: [Neo4j] Getting sorted results from a traversal

The DB would do it in memory too, wouldn't it?  In the case of a complex 
traversal, indexes don't really apply, since the ordering and the traversal 
order are unrelated, so you'd generally need to sort in memory anyway.  Whether 
you do it as you add elements to the traversed list of stuff or do it after 
the fact is another discussion, but I think in either case, it needs to be done 
after the fact.


-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
Behalf Of Pere Urbon Bayes
Sent: Friday, July 15, 2011 11:05 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] Getting sorted results from a traversal

Well, this is great if I want to do all the math in memory, but I expect to
do the computation by the db.

/ purbon

On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:

 Hi Pere,

 To sort you need to have all your results.

 Thus, in Gremlin (and hopefully you can do the mapping to the core Neo4j
 traverser framework),

 results = []
 g.v(1).out('friend').out('likes')  results // what my friends like
 results.sort{a,b - a.name = b.name} // sort resultant vertices by name

 In short, once you have the result of your traversal, you can then apply a
 comparator to the Collection to sort it as you please --- its just Java
 comparators.

 See ya,
 Marko.

 http://markorodriguez.com

 On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:

  HI!
  I am on the situation of having to traverse neo4j, and then expect the
  resultset returned to be ordered in a certain order. I've been
 researching a
  bit over the traversal API, but I did not find anything related to that.
 I
  really will appreciate any tip on that!!
 
  BTW  I expect to be possible right?, as we have in relational the
 ordering,
  or on redis, etc...
 
  /purbon
 
  --
  Pere Urbon-Bayes
  moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
  Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
  ___
  Neo4j mailing list
  User@lists.neo4j.org
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 https://lists.neo4j.org/mailman/listinfo/user




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Re: [Neo4j] Getting sorted results from a traversal

Hi,

Ah. Then I would recommend using a persistent data structure such as the one 
the Neil discussed in his follow up post.

Marko.

http://markorodriguez.com

On Jul 15, 2011, at 9:04 AM, Pere Urbon Bayes wrote:

 Well, this is great if I want to do all the math in memory, but I expect to
 do the computation by the db.
 
 / purbon
 
 On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
 
 Hi Pere,
 
 To sort you need to have all your results.
 
 Thus, in Gremlin (and hopefully you can do the mapping to the core Neo4j
 traverser framework),
 
 results = []
 g.v(1).out('friend').out('likes')  results // what my friends like
 results.sort{a,b - a.name = b.name} // sort resultant vertices by name
 
 In short, once you have the result of your traversal, you can then apply a
 comparator to the Collection to sort it as you please --- its just Java
 comparators.
 
 See ya,
 Marko.
 
 http://markorodriguez.com
 
 On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
 
 HI!
 I am on the situation of having to traverse neo4j, and then expect the
 resultset returned to be ordered in a certain order. I've been
 researching a
 bit over the traversal API, but I did not find anything related to that.
 I
 really will appreciate any tip on that!!
 
 BTW  I expect to be possible right?, as we have in relational the
 ordering,
 or on redis, etc...
 
 /purbon
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 Neo4j mailing list
 User@lists.neo4j.org
 https://lists.neo4j.org/mailman/listinfo/user
 
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 https://lists.neo4j.org/mailman/listinfo/user
 
 
 
 
 -- 
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 ___
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Re: [Neo4j] [Blog Post] Graphs, Brains, and Gremlin

Hi Rick,

 Added a comment and a book recommendation to your blog.

Thanks. On Intelligence is the first reference in the references section of 
the post --- along with some other goodies.

Thanks for reading and commenting,
Marko.

http://markorodriguez.com

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Re: [Neo4j] Getting sorted results from a traversal

I would think that the graph structure definitely matters, in that there may be 
optimizations that can be achieved via indexing/querying vs traversal and 
sorting (or a hybrid of the two) depending on the specifics.

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
Behalf Of Pere Urbon Bayes
Sent: Friday, July 15, 2011 11:14 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] Getting sorted results from a traversal

Well the graph structure is not relevant here, I think. The property I
expect to be sorting is on the destination node, so I can do the traversal
and then expect to run the sorting.

Please, tell me how the data structure can help me to deal with that order,
please?

/ purbon

On 15 July 2011 17:10, David Montag david.mon...@neotechnology.com wrote:

 Hi Pere,

 Can you elaborate on your graph structure?

 Thanks,
 David

 On Fri, Jul 15, 2011 at 8:04 AM, Pere Urbon Bayes p...@moviepilot.com
 wrote:

  Well, this is great if I want to do all the math in memory, but I expect
 to
  do the computation by the db.

  / purbon

  On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:

   Hi Pere,

   To sort you need to have all your results.

   Thus, in Gremlin (and hopefully you can do the mapping to the core
 Neo4j
   traverser framework),

   results = []
   g.v(1).out('friend').out('likes')  results // what my friends like
   results.sort{a,b - a.name = b.name} // sort resultant vertices by
  name

   In short, once you have the result of your traversal, you can then
 apply
  a
   comparator to the Collection to sort it as you please --- its just Java
   comparators.

   See ya,
   Marko.

   http://markorodriguez.com

   On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:

HI!
I am on the situation of having to traverse neo4j, and then expect
 the
resultset returned to be ordered in a certain order. I've been
   researching a
bit over the traversal API, but I did not find anything related to
  that.
   I
really will appreciate any tip on that!!

BTW  I expect to be possible right?, as we have in relational the
   ordering,
or on redis, etc...

/purbon

--
Pere Urbon-Bayes
moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
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 Neo Technology, www.neotechnology.com
 Cell: 650.556.4411
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Re: [Neo4j] Getting sorted results from a traversal

Well in fact, I expect to order the resulting set of nodes by a property on
that end nodes. But This class cold also help on some use cases I think.

/ purbon

On 15 July 2011 16:43, Niels Hoogeveen pd_aficion...@hotmail.com wrote:


 Hi,You basically have two options. If your result set is not too big, you
 can sort it in memory, though that approach may consume too much memory if
 the result set is very large. In that case you can use SortedTree (see:
 https://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree).
 This allows you to layout the relationships you want to traverse in sorted
 order.
 Niels
  Date: Fri, 15 Jul 2011 16:06:44 +0200
  From: p...@moviepilot.com
  To: user@lists.neo4j.org
  Subject: [Neo4j] Getting sorted results from a traversal
 
  HI!
   I am on the situation of having to traverse neo4j, and then expect the
  resultset returned to be ordered in a certain order. I've been
 researching a
  bit over the traversal API, but I did not find anything related to that.
 I
  really will appreciate any tip on that!!
 
  BTW  I expect to be possible right?, as we have in relational the
 ordering,
  or on redis, etc...
 
  /purbon
 
  --
  Pere Urbon-Bayes
  moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
  Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
  ___
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Re: [Neo4j] Getting sorted results from a traversal

Yes the graph structure is relevant, but I am just saying I don't know how
the structure can help me in this use case.

All that I want is to do a traversal, and then order the expected result. It
will be possible If I only use neo4j as a traversal thing, and then another
system as a property store, but I think the hole neo4j should be able to
deal with that, right?

/ purbon

On 15 July 2011 17:16, Rick Bullotta rick.bullo...@thingworx.com wrote:

 I would think that the graph structure definitely matters, in that there
 may be optimizations that can be achieved via indexing/querying vs traversal
 and sorting (or a hybrid of the two) depending on the specifics.

 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:14 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal

 Well the graph structure is not relevant here, I think. The property I
 expect to be sorting is on the destination node, so I can do the traversal
 and then expect to run the sorting.

 Please, tell me how the data structure can help me to deal with that order,
 please?

 / purbon

 On 15 July 2011 17:10, David Montag david.mon...@neotechnology.com
 wrote:

  Hi Pere,
 
  Can you elaborate on your graph structure?
 
  Thanks,
  David
 
  On Fri, Jul 15, 2011 at 8:04 AM, Pere Urbon Bayes p...@moviepilot.com
  wrote:
 
   Well, this is great if I want to do all the math in memory, but I
 expect
  to
   do the computation by the db.
  
   / purbon
  
   On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
  
Hi Pere,
   
To sort you need to have all your results.
   
Thus, in Gremlin (and hopefully you can do the mapping to the core
  Neo4j
traverser framework),
   
results = []
g.v(1).out('friend').out('likes')  results // what my friends like
results.sort{a,b - a.name = b.name} // sort resultant vertices by
   name
   
In short, once you have the result of your traversal, you can then
  apply
   a
comparator to the Collection to sort it as you please --- its just
 Java
comparators.
   
See ya,
Marko.
   
http://markorodriguez.com
   
On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
   
 HI!
 I am on the situation of having to traverse neo4j, and then expect
  the
 resultset returned to be ordered in a certain order. I've been
researching a
 bit over the traversal API, but I did not find anything related to
   that.
I
 really will appreciate any tip on that!!

 BTW  I expect to be possible right?, as we have in relational the
ordering,
 or on redis, etc...

 /purbon

 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 Neo4j mailing list
 User@lists.neo4j.org
 https://lists.neo4j.org/mailman/listinfo/user
   
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   --
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   Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
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Re: [Neo4j] Getting sorted results from a traversal

Well, the thing is that the database can easy deal with that, as the
relational system do.

/ purbon

On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com wrote:

 The DB would do it in memory too, wouldn't it?  In the case of a complex
 traversal, indexes don't really apply, since the ordering and the traversal
 order are unrelated, so you'd generally need to sort in memory anyway.
  Whether you do it as you add elements to the traversed list of stuff or
 do it after the fact is another discussion, but I think in either case, it
 needs to be done after the fact.


 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:05 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal

 Well, this is great if I want to do all the math in memory, but I expect to
 do the computation by the db.

 / purbon

 On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:

  Hi Pere,
 
  To sort you need to have all your results.
 
  Thus, in Gremlin (and hopefully you can do the mapping to the core Neo4j
  traverser framework),
 
  results = []
  g.v(1).out('friend').out('likes')  results // what my friends like
  results.sort{a,b - a.name = b.name} // sort resultant vertices by
 name
 
  In short, once you have the result of your traversal, you can then apply
 a
  comparator to the Collection to sort it as you please --- its just Java
  comparators.
 
  See ya,
  Marko.
 
  http://markorodriguez.com
 
  On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
 
   HI!
   I am on the situation of having to traverse neo4j, and then expect the
   resultset returned to be ordered in a certain order. I've been
  researching a
   bit over the traversal API, but I did not find anything related to
 that.
  I
   really will appreciate any tip on that!!
  
   BTW  I expect to be possible right?, as we have in relational the
  ordering,
   or on redis, etc...
  
   /purbon
  
   --
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Re: [Neo4j] Getting sorted results from a traversal

A few questions/thoughts:

- Do you have any expectation/prediction of the number of nodes satisfying the 
query?
- Do you care about *all* results or only the top n (I ask this because in 
most cases, a dataset of a zillion ordered records is of little value - often 
only the edges have meaningful content)

If the answer to the first question is  a couple million or so, I would 
probably sort in memory.  If the answer to the second question is yes, then 
the problem because very easy, in that you can maintain a sorted list of the 
top n during the traversal process fairly easily.


-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
Behalf Of Pere Urbon Bayes
Sent: Friday, July 15, 2011 11:17 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] Getting sorted results from a traversal

Well in fact, I expect to order the resulting set of nodes by a property on
that end nodes. But This class cold also help on some use cases I think.

/ purbon

On 15 July 2011 16:43, Niels Hoogeveen pd_aficion...@hotmail.com wrote:


 Hi,You basically have two options. If your result set is not too big, you
 can sort it in memory, though that approach may consume too much memory if
 the result set is very large. In that case you can use SortedTree (see:
 https://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree).
 This allows you to layout the relationships you want to traverse in sorted
 order.
 Niels
  Date: Fri, 15 Jul 2011 16:06:44 +0200
  From: p...@moviepilot.com
  To: user@lists.neo4j.org
  Subject: [Neo4j] Getting sorted results from a traversal
 
  HI!
   I am on the situation of having to traverse neo4j, and then expect the
  resultset returned to be ordered in a certain order. I've been
 researching a
  bit over the traversal API, but I did not find anything related to that.
 I
  really will appreciate any tip on that!!
 
  BTW  I expect to be possible right?, as we have in relational the
 ordering,
  or on redis, etc...
 
  /purbon
 
  --
  Pere Urbon-Bayes
  moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
  Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
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Re: [Neo4j] [Blog Post] Graphs, Brains, and Gremlin

Nice.  It's a very though provoking (pun clearly intended) blog post.  I need 
to read it a couple times to fully grok it.

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
Behalf Of Marko Rodriguez
Sent: Friday, July 15, 2011 11:11 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] [Blog Post] Graphs, Brains, and Gremlin

Hi Rick,

 Added a comment and a book recommendation to your blog.

Thanks. On Intelligence is the first reference in the references section of 
the post --- along with some other goodies.

Thanks for reading and commenting,
Marko.

http://markorodriguez.com

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Re: [Neo4j] [Blog Post] Graphs, Brains, and Gremlin

 Nice.  It's a very though provoking (pun clearly intended) blog post.  I 
 need to read it a couple times to fully grok it.

I put many links to associated reading (primarily on Wikipedia). If you don't 
have experience with elementary cognitive neuroscience, then you can learn all 
you need to know by following the links. I can save you 2-years of tuition: 
read the blog post and the one-step away Wikipedia pages :)...and if you want a 
graduate-level understanding of cognitive neuroscience, go two-steps. If you 
want to understand even more, do a spreading activation through Wikipedia :).

Also, the HMAX diagram...
http://markorodriguez.files.wordpress.com/2011/07/hmax-model.png
...is an accurate diagram and if you can follow what its trying to represent, 
then it will give you a good understanding of the first layers of the visual 
cortex are doing. Part of my postdoctoral work was on this model which is a 
computational model of the visual cortex that is biologically realistic. Its a 
very cool model indeed. I have two references in the references section that 
point to further HMAX information.

Thanks again,
Marko.

http://markorodriguez.com
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[Neo4j] Cypher request with where clause on relations count

2011-07-15 Thread Allee, Guillaume

Hi,

I have 2 kind of nodes (let's say A and B) which are related using a relation 
of type 'USES'.
I want to count all the type A nodes which have only 1 relation to B type node 
and all the type A nodes which have more than one relation to B type node.

I am using neo4j server and I am currently trying to make a cypher request for 
that : it would look like that :

start A=(id,object_type,A) match (A)-[r:USES]-(B) where count(r)=1 return 
count(A)

It is possible to make that kind of request with Cypher ?  If not, how would 
you do it with Neo4j server ?

Cheers,


Guillaume ALLEE | Capgemini | BTech Toulouse


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[Neo4j] Verifying the relationship between two nodes

2011-07-15 Thread Diego Alvarez Nogueira

Hi,
I'm using: ruby 1.9.2, rails 3, neo4j and neography.
I have the following nodes and relationships:

node1 = $neo.create_node(:id = 1, :name = Diego)
node2 = $neo.create_node(:id = 2, :name = Jhon)
$neo.create_relationship(:knows, node1, node2)

My question is, how can i verify if there is a relationship between the nodes 
with id=1 and id=2?

Thanks, 

Best,
Diego Nogueira

--
Atenciosamente,

Diego Alvarez Nogueira
Blog: http://diegonogueira.com.br | http://papoinformal.com
Skype: nogueiradiego
Twitter: @nogueiradiego

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Re: [Neo4j] Verifying the relationship between two nodes

Diego,

this is code from one of my neography apps: https://github.com/jexp/birdies

@users.outgoing(:USER)  user if 
@users.rels(:USER).outgoing.to_other(user).empty?

@users and user are your two nodes.

So it would be:

! node1.rels(:knows).outgoing.to_other(node2).empty?

Cheers

Michael

Am 15.07.2011 um 19:06 schrieb Diego Alvarez Nogueira:

 Hi,
 I'm using: ruby 1.9.2, rails 3, neo4j and neography.
 I have the following nodes and relationships:
 
 node1 = $neo.create_node(:id = 1, :name = Diego)
 node2 = $neo.create_node(:id = 2, :name = Jhon)
 $neo.create_relationship(:knows, node1, node2)
 
 My question is, how can i verify if there is a relationship between the nodes 
 with id=1 and id=2?
 
 Thanks, 
 
 Best,
 Diego Nogueira
 
 --
 Atenciosamente,
 
 Diego Alvarez Nogueira
 Blog: http://diegonogueira.com.br | http://papoinformal.com
 Skype: nogueiradiego
 Twitter: @nogueiradiego
 
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Re: [Neo4j] Getting sorted results from a traversal

You might also try to use cypher for your traversal which is able to order 
(also in memory of course).

See the screencast I did: http://neo4j.vidcaster.com/U2Y/introduction-to-cypher/

It's even the same domain.

Cheers

Michael

Am 15.07.2011 um 17:24 schrieb Rick Bullotta:

 But you couldn't easy do a complex traversal with an RDBMS. ;-)
 
 I suspect that even if you could write some magic SQL to do so, you'd almost 
 certainly lose the benefits any optimized sorting/ordering that indices 
 provide, so even the RDBMS would have to post-process the sort.
 
 If the traversal isn't complex or randomly deep, then Neo indexing + 
 querying might work for you the same way an RDBMS might handle it.
 
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On 
 Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:21 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal
 
 Well, the thing is that the database can easy deal with that, as the
 relational system do.
 
 / purbon
 
 On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com wrote:
 
 The DB would do it in memory too, wouldn't it?  In the case of a complex
 traversal, indexes don't really apply, since the ordering and the traversal
 order are unrelated, so you'd generally need to sort in memory anyway.
 Whether you do it as you add elements to the traversed list of stuff or
 do it after the fact is another discussion, but I think in either case, it
 needs to be done after the fact.
 
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:05 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal
 
 Well, this is great if I want to do all the math in memory, but I expect to
 do the computation by the db.
 
 / purbon
 
 On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
 
 Hi Pere,
 
 To sort you need to have all your results.
 
 Thus, in Gremlin (and hopefully you can do the mapping to the core Neo4j
 traverser framework),
 
 results = []
 g.v(1).out('friend').out('likes')  results // what my friends like
 results.sort{a,b - a.name = b.name} // sort resultant vertices by
 name
 
 In short, once you have the result of your traversal, you can then apply
 a
 comparator to the Collection to sort it as you please --- its just Java
 comparators.
 
 See ya,
 Marko.
 
 http://markorodriguez.com
 
 On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
 
 HI!
 I am on the situation of having to traverse neo4j, and then expect the
 resultset returned to be ordered in a certain order. I've been
 researching a
 bit over the traversal API, but I did not find anything related to
 that.
 I
 really will appreciate any tip on that!!
 
 BTW  I expect to be possible right?, as we have in relational the
 ordering,
 or on redis, etc...
 
 /purbon
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 Neo4j mailing list
 User@lists.neo4j.org
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Re: [Neo4j] Getting sorted results from a traversal

Yeah! well to order in memory I can really deal with that task, for this I
really don't need cypher. Don´t take it personally, I know you really want
to promote your language, xD!

- purbon

PD: See you next graphdb meetup in Berlin!

On 15 July 2011 19:37, Michael Hunger michael.hun...@neotechnology.comwrote:

 You might also try to use cypher for your traversal which is able to order
 (also in memory of course).

 See the screencast I did:
 http://neo4j.vidcaster.com/U2Y/introduction-to-cypher/

 It's even the same domain.

 Cheers

 Michael

 Am 15.07.2011 um 17:24 schrieb Rick Bullotta:

  But you couldn't easy do a complex traversal with an RDBMS. ;-)
 
  I suspect that even if you could write some magic SQL to do so, you'd
 almost certainly lose the benefits any optimized sorting/ordering that
 indices provide, so even the RDBMS would have to post-process the sort.
 
  If the traversal isn't complex or randomly deep, then Neo indexing +
 querying might work for you the same way an RDBMS might handle it.
 
 
  -Original Message-
  From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
 On Behalf Of Pere Urbon Bayes
  Sent: Friday, July 15, 2011 11:21 AM
  To: Neo4j user discussions
  Subject: Re: [Neo4j] Getting sorted results from a traversal
 
  Well, the thing is that the database can easy deal with that, as the
  relational system do.
 
  / purbon
 
  On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com
 wrote:
 
  The DB would do it in memory too, wouldn't it?  In the case of a complex
  traversal, indexes don't really apply, since the ordering and the
 traversal
  order are unrelated, so you'd generally need to sort in memory anyway.
  Whether you do it as you add elements to the traversed list of stuff
 or
  do it after the fact is another discussion, but I think in either case,
 it
  needs to be done after the fact.
 
 
  -Original Message-
  From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org
 ]
  On Behalf Of Pere Urbon Bayes
  Sent: Friday, July 15, 2011 11:05 AM
  To: Neo4j user discussions
  Subject: Re: [Neo4j] Getting sorted results from a traversal
 
  Well, this is great if I want to do all the math in memory, but I expect
 to
  do the computation by the db.
 
  / purbon
 
  On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
 
  Hi Pere,
 
  To sort you need to have all your results.
 
  Thus, in Gremlin (and hopefully you can do the mapping to the core
 Neo4j
  traverser framework),
 
  results = []
  g.v(1).out('friend').out('likes')  results // what my friends like
  results.sort{a,b - a.name = b.name} // sort resultant vertices by
  name
 
  In short, once you have the result of your traversal, you can then
 apply
  a
  comparator to the Collection to sort it as you please --- its just Java
  comparators.
 
  See ya,
  Marko.
 
  http://markorodriguez.com
 
  On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
 
  HI!
  I am on the situation of having to traverse neo4j, and then expect the
  resultset returned to be ordered in a certain order. I've been
  researching a
  bit over the traversal API, but I did not find anything related to
  that.
  I
  really will appreciate any tip on that!!
 
  BTW  I expect to be possible right?, as we have in relational the
  ordering,
  or on redis, etc...
 
  /purbon
 
  --
  Pere Urbon-Bayes
  moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
  Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
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Re: [Neo4j] Getting sorted results from a traversal

Hi Rick,

On 15 July 2011 17:24, Rick Bullotta rick.bullo...@thingworx.com wrote:

 But you couldn't easy do a complex traversal with an RDBMS. ;-)


Yeah, so you are on me, from neo4j I could only expect to deal really good
with traversals, when you need some simple thing like ordering nodes, you
can not do it easily.


 I suspect that even if you could write some magic SQL to do so, you'd
 almost certainly lose the benefits any optimized sorting/ordering that
 indices provide, so even the RDBMS would have to post-process the sort.


Well, there are two tasks involved on that,

1.- Do the traversals? ( Where neo4j simple rocks!)
2.- The post ordering? ( Where I will need something else)

The thing is that with the second one I would expect something like this

Traversal - Set of Nodes - Order - Set of Nodes ordered

In this use case I really would like to have this feature as traversals
expect to return always some kind of node set. On the oder side there are
the graph maching, where you expect a full graph. Also will be interesting
when dealing with edges, there we could also have something like an ordered
tree
https://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree


 If the traversal isn't complex or randomly deep, then Neo indexing +
 querying might work for you the same way an RDBMS might handle it.


Well, If I was able to ask the internal lucene to order the resultset from
the traversal then will be find. But please teach me how you will do it,
oder wise for me its just a use case neo4j can not provide me.

- purbon

-Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:21 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal

 Well, the thing is that the database can easy deal with that, as the
 relational system do.

 / purbon

 On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com wrote:

  The DB would do it in memory too, wouldn't it?  In the case of a complex
  traversal, indexes don't really apply, since the ordering and the
 traversal
  order are unrelated, so you'd generally need to sort in memory anyway.
   Whether you do it as you add elements to the traversed list of stuff
 or
  do it after the fact is another discussion, but I think in either case,
 it
  needs to be done after the fact.
 
 
  -Original Message-
  From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
  On Behalf Of Pere Urbon Bayes
  Sent: Friday, July 15, 2011 11:05 AM
  To: Neo4j user discussions
  Subject: Re: [Neo4j] Getting sorted results from a traversal
 
  Well, this is great if I want to do all the math in memory, but I expect
 to
  do the computation by the db.
 
  / purbon
 
  On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
 
   Hi Pere,
  
   To sort you need to have all your results.
  
   Thus, in Gremlin (and hopefully you can do the mapping to the core
 Neo4j
   traverser framework),
  
   results = []
   g.v(1).out('friend').out('likes')  results // what my friends like
   results.sort{a,b - a.name = b.name} // sort resultant vertices by
  name
  
   In short, once you have the result of your traversal, you can then
 apply
  a
   comparator to the Collection to sort it as you please --- its just Java
   comparators.
  
   See ya,
   Marko.
  
   http://markorodriguez.com
  
   On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
  
HI!
I am on the situation of having to traverse neo4j, and then expect
 the
resultset returned to be ordered in a certain order. I've been
   researching a
bit over the traversal API, but I did not find anything related to
  that.
   I
really will appreciate any tip on that!!
   
BTW  I expect to be possible right?, as we have in relational the
   ordering,
or on redis, etc...
   
/purbon
   
--
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[Neo4j] use one index per key or one index for all keys?

2011-07-15 Thread Boris Kizelshteyn

I have an index called UniqueIndex, here I am storing emails and ids which
you guessed it have to be unique. Is there any performance difference if I
store both keys on the same index vs. storing them on two different indexes?

Many thanks!
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Re: [Neo4j] Getting sorted results from a traversal

Hi,

Pere, my last thought on this is that you might want to use something like 
JDBM2.

http://code.google.com/p/jdbm2/

It has a Maven2 dependency if you do it that way.

JDBM2 provides you some Java collection implementations that are persistent to 
disk...

See ya,
Marko.

http://markorodriguez.com

On Jul 15, 2011, at 12:22 PM, Pere Urbon Bayes wrote:

 Yeah! well to order in memory I can really deal with that task, for this I
 really don't need cypher. Don´t take it personally, I know you really want
 to promote your language, xD!
 
 - purbon
 
 PD: See you next graphdb meetup in Berlin!
 
 On 15 July 2011 19:37, Michael Hunger michael.hun...@neotechnology.comwrote:
 
 You might also try to use cypher for your traversal which is able to order
 (also in memory of course).
 
 See the screencast I did:
 http://neo4j.vidcaster.com/U2Y/introduction-to-cypher/
 
 It's even the same domain.
 
 Cheers
 
 Michael
 
 Am 15.07.2011 um 17:24 schrieb Rick Bullotta:
 
 But you couldn't easy do a complex traversal with an RDBMS. ;-)
 
 I suspect that even if you could write some magic SQL to do so, you'd
 almost certainly lose the benefits any optimized sorting/ordering that
 indices provide, so even the RDBMS would have to post-process the sort.
 
 If the traversal isn't complex or randomly deep, then Neo indexing +
 querying might work for you the same way an RDBMS might handle it.
 
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:21 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal
 
 Well, the thing is that the database can easy deal with that, as the
 relational system do.
 
 / purbon
 
 On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com
 wrote:
 
 The DB would do it in memory too, wouldn't it?  In the case of a complex
 traversal, indexes don't really apply, since the ordering and the
 traversal
 order are unrelated, so you'd generally need to sort in memory anyway.
 Whether you do it as you add elements to the traversed list of stuff
 or
 do it after the fact is another discussion, but I think in either case,
 it
 needs to be done after the fact.
 
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org
 ]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:05 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal
 
 Well, this is great if I want to do all the math in memory, but I expect
 to
 do the computation by the db.
 
 / purbon
 
 On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
 
 Hi Pere,
 
 To sort you need to have all your results.
 
 Thus, in Gremlin (and hopefully you can do the mapping to the core
 Neo4j
 traverser framework),
 
 results = []
 g.v(1).out('friend').out('likes')  results // what my friends like
 results.sort{a,b - a.name = b.name} // sort resultant vertices by
 name
 
 In short, once you have the result of your traversal, you can then
 apply
 a
 comparator to the Collection to sort it as you please --- its just Java
 comparators.
 
 See ya,
 Marko.
 
 http://markorodriguez.com
 
 On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
 
 HI!
 I am on the situation of having to traverse neo4j, and then expect the
 resultset returned to be ordered in a certain order. I've been
 researching a
 bit over the traversal API, but I did not find anything related to
 that.
 I
 really will appreciate any tip on that!!
 
 BTW  I expect to be possible right?, as we have in relational the
 ordering,
 or on redis, etc...
 
 /purbon
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 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
 
 
 
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 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
 
 
 
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 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

Re: [Neo4j] Getting sorted results from a traversal

Hey,

Actually, I was just Googling and found this cool library:
http://code.google.com/p/pcollections/

This way you have Set, Vector, etc. persisted. Perhaps that could help you out 
Pere.

See ya,
Marko.

http://markorodriguez.com

On Jul 15, 2011, at 12:30 PM, Marko Rodriguez wrote:

 Hi,
 
 Pere, my last thought on this is that you might want to use something like 
 JDBM2.
 
   http://code.google.com/p/jdbm2/
 
 It has a Maven2 dependency if you do it that way.
 
 JDBM2 provides you some Java collection implementations that are persistent 
 to disk...
 
 See ya,
 Marko.
 
 http://markorodriguez.com
 
 On Jul 15, 2011, at 12:22 PM, Pere Urbon Bayes wrote:
 
 Yeah! well to order in memory I can really deal with that task, for this I
 really don't need cypher. Don´t take it personally, I know you really want
 to promote your language, xD!
 
 - purbon
 
 PD: See you next graphdb meetup in Berlin!
 
 On 15 July 2011 19:37, Michael Hunger 
 michael.hun...@neotechnology.comwrote:
 
 You might also try to use cypher for your traversal which is able to order
 (also in memory of course).
 
 See the screencast I did:
 http://neo4j.vidcaster.com/U2Y/introduction-to-cypher/
 
 It's even the same domain.
 
 Cheers
 
 Michael
 
 Am 15.07.2011 um 17:24 schrieb Rick Bullotta:
 
 But you couldn't easy do a complex traversal with an RDBMS. ;-)
 
 I suspect that even if you could write some magic SQL to do so, you'd
 almost certainly lose the benefits any optimized sorting/ordering that
 indices provide, so even the RDBMS would have to post-process the sort.
 
 If the traversal isn't complex or randomly deep, then Neo indexing +
 querying might work for you the same way an RDBMS might handle it.
 
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:21 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal
 
 Well, the thing is that the database can easy deal with that, as the
 relational system do.
 
 / purbon
 
 On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com
 wrote:
 
 The DB would do it in memory too, wouldn't it?  In the case of a complex
 traversal, indexes don't really apply, since the ordering and the
 traversal
 order are unrelated, so you'd generally need to sort in memory anyway.
 Whether you do it as you add elements to the traversed list of stuff
 or
 do it after the fact is another discussion, but I think in either case,
 it
 needs to be done after the fact.
 
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org
 ]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:05 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal
 
 Well, this is great if I want to do all the math in memory, but I expect
 to
 do the computation by the db.
 
 / purbon
 
 On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
 
 Hi Pere,
 
 To sort you need to have all your results.
 
 Thus, in Gremlin (and hopefully you can do the mapping to the core
 Neo4j
 traverser framework),
 
 results = []
 g.v(1).out('friend').out('likes')  results // what my friends like
 results.sort{a,b - a.name = b.name} // sort resultant vertices by
 name
 
 In short, once you have the result of your traversal, you can then
 apply
 a
 comparator to the Collection to sort it as you please --- its just Java
 comparators.
 
 See ya,
 Marko.
 
 http://markorodriguez.com
 
 On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
 
 HI!
 I am on the situation of having to traverse neo4j, and then expect the
 resultset returned to be ordered in a certain order. I've been
 researching a
 bit over the traversal API, but I did not find anything related to
 that.
 I
 really will appreciate any tip on that!!
 
 BTW  I expect to be possible right?, as we have in relational the
 ordering,
 or on redis, etc...
 
 /purbon
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 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
 
 
 
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 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
 
 
 
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133

Re: [Neo4j] Getting sorted results from a traversal

2011-07-15 Thread David Montag

Marko,

Isn't that pretty similar to what
https://github.com/peterneubauer/graph-collectionshttps://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree
provides
for Neo4j?

David

On Fri, Jul 15, 2011 at 11:30 AM, Marko Rodriguez okramma...@gmail.comwrote:

 Hi,

 Pere, my last thought on this is that you might want to use something like
 JDBM2.

http://code.google.com/p/jdbm2/

 It has a Maven2 dependency if you do it that way.

 JDBM2 provides you some Java collection implementations that are persistent
 to disk...

 See ya,
 Marko.

 http://markorodriguez.com

 On Jul 15, 2011, at 12:22 PM, Pere Urbon Bayes wrote:

  Yeah! well to order in memory I can really deal with that task, for this
 I
  really don't need cypher. Don´t take it personally, I know you really
 want
  to promote your language, xD!
 
  - purbon
 
  PD: See you next graphdb meetup in Berlin!
 
  On 15 July 2011 19:37, Michael Hunger michael.hun...@neotechnology.com
 wrote:
 
  You might also try to use cypher for your traversal which is able to
 order
  (also in memory of course).
 
  See the screencast I did:
  http://neo4j.vidcaster.com/U2Y/introduction-to-cypher/
 
  It's even the same domain.
 
  Cheers
 
  Michael
 
  Am 15.07.2011 um 17:24 schrieb Rick Bullotta:
 
  But you couldn't easy do a complex traversal with an RDBMS. ;-)
 
  I suspect that even if you could write some magic SQL to do so, you'd
  almost certainly lose the benefits any optimized sorting/ordering that
  indices provide, so even the RDBMS would have to post-process the sort.
 
  If the traversal isn't complex or randomly deep, then Neo indexing +
  querying might work for you the same way an RDBMS might handle it.
 
 
  -Original Message-
  From: user-boun...@lists.neo4j.org [mailto:
 user-boun...@lists.neo4j.org]
  On Behalf Of Pere Urbon Bayes
  Sent: Friday, July 15, 2011 11:21 AM
  To: Neo4j user discussions
  Subject: Re: [Neo4j] Getting sorted results from a traversal
 
  Well, the thing is that the database can easy deal with that, as the
  relational system do.
 
  / purbon
 
  On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com
  wrote:
 
  The DB would do it in memory too, wouldn't it?  In the case of a
 complex
  traversal, indexes don't really apply, since the ordering and the
  traversal
  order are unrelated, so you'd generally need to sort in memory anyway.
  Whether you do it as you add elements to the traversed list of stuff
  or
  do it after the fact is another discussion, but I think in either
 case,
  it
  needs to be done after the fact.
 
 
  -Original Message-
  From: user-boun...@lists.neo4j.org [mailto:
 user-boun...@lists.neo4j.org
  ]
  On Behalf Of Pere Urbon Bayes
  Sent: Friday, July 15, 2011 11:05 AM
  To: Neo4j user discussions
  Subject: Re: [Neo4j] Getting sorted results from a traversal
 
  Well, this is great if I want to do all the math in memory, but I
 expect
  to
  do the computation by the db.
 
  / purbon
 
  On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
 
  Hi Pere,
 
  To sort you need to have all your results.
 
  Thus, in Gremlin (and hopefully you can do the mapping to the core
  Neo4j
  traverser framework),
 
  results = []
  g.v(1).out('friend').out('likes')  results // what my friends like
  results.sort{a,b - a.name = b.name} // sort resultant vertices by
  name
 
  In short, once you have the result of your traversal, you can then
  apply
  a
  comparator to the Collection to sort it as you please --- its just
 Java
  comparators.
 
  See ya,
  Marko.
 
  http://markorodriguez.com
 
  On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
 
  HI!
  I am on the situation of having to traverse neo4j, and then expect
 the
  resultset returned to be ordered in a certain order. I've been
  researching a
  bit over the traversal API, but I did not find anything related to
  that.
  I
  really will appreciate any tip on that!!
 
  BTW  I expect to be possible right?, as we have in relational the
  ordering,
  or on redis, etc...
 
  /purbon
 
  --
  Pere Urbon-Bayes
  moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
  Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
  ___
  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
 
 
 
 
  --
  Pere Urbon-Bayes
  moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
  Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
  ___
  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
 
 
 
 
  --
  Pere

Re: [Neo4j] Getting sorted results from a traversal

Hey,

 Isn't that pretty similar to what
 https://github.com/peterneubauer/graph-collectionshttps://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree
 provides
 for Neo4j?

I dunno. I haven't played with Graph Collections. But I assume so if it 
implements Java Collections interfaces ? The reason I brought up JDBM2 is 
because Pere still didn't seem satisfied after Niels recommendation of using 
graph-collections (that was the first email response to Pere).

Just throwing stuff out there -- must...make..Pere...happy...

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

Re: [Neo4j] Getting sorted results from a traversal

With our jruby script extension you can write server-side code in ruby that can 
do that for you.

Cheers

Michael

Am 15.07.2011 um 20:22 schrieb Pere Urbon Bayes:

 Yeah! well to order in memory I can really deal with that task, for this I
 really don't need cypher. Don´t take it personally, I know you really want
 to promote your language, xD!
 
 - purbon
 
 PD: See you next graphdb meetup in Berlin!
 
 On 15 July 2011 19:37, Michael Hunger michael.hun...@neotechnology.comwrote:
 
 You might also try to use cypher for your traversal which is able to order
 (also in memory of course).
 
 See the screencast I did:
 http://neo4j.vidcaster.com/U2Y/introduction-to-cypher/
 
 It's even the same domain.
 
 Cheers
 
 Michael
 
 Am 15.07.2011 um 17:24 schrieb Rick Bullotta:
 
 But you couldn't easy do a complex traversal with an RDBMS. ;-)
 
 I suspect that even if you could write some magic SQL to do so, you'd
 almost certainly lose the benefits any optimized sorting/ordering that
 indices provide, so even the RDBMS would have to post-process the sort.
 
 If the traversal isn't complex or randomly deep, then Neo indexing +
 querying might work for you the same way an RDBMS might handle it.
 
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:21 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal
 
 Well, the thing is that the database can easy deal with that, as the
 relational system do.
 
 / purbon
 
 On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com
 wrote:
 
 The DB would do it in memory too, wouldn't it?  In the case of a complex
 traversal, indexes don't really apply, since the ordering and the
 traversal
 order are unrelated, so you'd generally need to sort in memory anyway.
 Whether you do it as you add elements to the traversed list of stuff
 or
 do it after the fact is another discussion, but I think in either case,
 it
 needs to be done after the fact.
 
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org
 ]
 On Behalf Of Pere Urbon Bayes
 Sent: Friday, July 15, 2011 11:05 AM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Getting sorted results from a traversal
 
 Well, this is great if I want to do all the math in memory, but I expect
 to
 do the computation by the db.
 
 / purbon
 
 On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com wrote:
 
 Hi Pere,
 
 To sort you need to have all your results.
 
 Thus, in Gremlin (and hopefully you can do the mapping to the core
 Neo4j
 traverser framework),
 
 results = []
 g.v(1).out('friend').out('likes')  results // what my friends like
 results.sort{a,b - a.name = b.name} // sort resultant vertices by
 name
 
 In short, once you have the result of your traversal, you can then
 apply
 a
 comparator to the Collection to sort it as you please --- its just Java
 comparators.
 
 See ya,
 Marko.
 
 http://markorodriguez.com
 
 On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:
 
 HI!
 I am on the situation of having to traverse neo4j, and then expect the
 resultset returned to be ordered in a certain order. I've been
 researching a
 bit over the traversal API, but I did not find anything related to
 that.
 I
 really will appreciate any tip on that!!
 
 BTW  I expect to be possible right?, as we have in relational the
 ordering,
 or on redis, etc...
 
 /purbon
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 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
 
 
 
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 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
 
 
 
 
 --
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
 ___
 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
 
 
 
 
 -- 
 Pere Urbon-Bayes
 moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
 Telefon +49

Re: [Neo4j] Getting sorted results from a traversal

Jajajaja, Marko I just need to meet you sometime! I always listen good thing
about you from Peter and Achim ... I am quite not satisfied, probably I will
change somethings on my project in order to fit better with that use case!

- purbon


On 15 July 2011 20:53, Marko Rodriguez okramma...@gmail.com wrote:

 Hey,

  Isn't that pretty similar to what
  https://github.com/peterneubauer/graph-collections
 https://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree
 
  provides
  for Neo4j?

 I dunno. I haven't played with Graph Collections. But I assume so if it
 implements Java Collections interfaces ? The reason I brought up JDBM2 is
 because Pere still didn't seem satisfied after Niels recommendation of using
 graph-collections (that was the first email response to Pere).

 Just throwing stuff out there -- must...make..Pere...happy...

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




-- 
Pere Urbon-Bayes
moviepilot GmbH | Mehringdamm 33 | 10961 Berlin | Germany
Telefon +49 30 616 512 -110 | Fax +49 30 616 512 -133
___
Neo4j mailing list
User@lists.neo4j.org
https://lists.neo4j.org/mailman/listinfo/user

Re: [Neo4j] Getting sorted results from a traversal

After a fast walk throw the code I found that option quite interesting and
probably the best fit till now for that problem! I hope I will be able to
provide a useful solution for those with the same problem than me...

I just tried you say I was expecting neo4j to provide me with something like
a sort command, I really realise is something not common in the graphdb
world, but something cool that can help a lot of people.

- purbon

On 15 July 2011 20:50, David Montag david.mon...@neotechnology.com wrote:

Marko,

Isn't that pretty similar to what
https://github.com/peterneubauer/graph-collections
https://github.com/peterneubauer/graph-collections/tree/master/src/main/java/org/neo4j/collections/sortedtree

provides
for Neo4j?

David

On Fri, Jul 15, 2011 at 11:30 AM, Marko Rodriguez okramma...@gmail.com
wrote:

Hi,

Pere, my last thought on this is that you might want to use something
like
JDBM2.

http://code.google.com/p/jdbm2/

It has a Maven2 dependency if you do it that way.

JDBM2 provides you some Java collection implementations that are
persistent
to disk...

See ya,
Marko.

http://markorodriguez.com

On Jul 15, 2011, at 12:22 PM, Pere Urbon Bayes wrote:

Yeah! well to order in memory I can really deal with that task, for
this
I
really don't need cypher. Don´t take it personally, I know you really
want
to promote your language, xD!

- purbon

PD: See you next graphdb meetup in Berlin!

On 15 July 2011 19:37, Michael Hunger
michael.hun...@neotechnology.com
wrote:

You might also try to use cypher for your traversal which is able to
order
(also in memory of course).

See the screencast I did:
http://neo4j.vidcaster.com/U2Y/introduction-to-cypher/

It's even the same domain.

Cheers

Michael

Am 15.07.2011 um 17:24 schrieb Rick Bullotta:

But you couldn't easy do a complex traversal with an RDBMS. ;-)

I suspect that even if you could write some magic SQL to do so, you'd
almost certainly lose the benefits any optimized sorting/ordering that
indices provide, so even the RDBMS would have to post-process the
sort.

If the traversal isn't complex or randomly deep, then Neo indexing
+
querying might work for you the same way an RDBMS might handle it.

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:
user-boun...@lists.neo4j.org]
On Behalf Of Pere Urbon Bayes
Sent: Friday, July 15, 2011 11:21 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] Getting sorted results from a traversal

Well, the thing is that the database can easy deal with that, as the
relational system do.

/ purbon

On 15 July 2011 17:08, Rick Bullotta rick.bullo...@thingworx.com
wrote:

The DB would do it in memory too, wouldn't it? In the case of a
complex
traversal, indexes don't really apply, since the ordering and the
traversal
order are unrelated, so you'd generally need to sort in memory
anyway.
Whether you do it as you add elements to the traversed list of
stuff
or
do it after the fact is another discussion, but I think in either
case,
it
needs to be done after the fact.

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:
user-boun...@lists.neo4j.org
]
On Behalf Of Pere Urbon Bayes
Sent: Friday, July 15, 2011 11:05 AM
To: Neo4j user discussions
Subject: Re: [Neo4j] Getting sorted results from a traversal

Well, this is great if I want to do all the math in memory, but I
expect
to
do the computation by the db.

/ purbon

On 15 July 2011 16:10, Marko Rodriguez okramma...@gmail.com
wrote:

Hi Pere,

To sort you need to have all your results.

Thus, in Gremlin (and hopefully you can do the mapping to the core
Neo4j
traverser framework),

results = []
g.v(1).out('friend').out('likes') results // what my friends
like
results.sort{a,b - a.name = b.name} // sort resultant vertices
by
name

In short, once you have the result of your traversal, you can then
apply
a
comparator to the Collection to sort it as you please --- its just
Java
comparators.

See ya,
Marko.

http://markorodriguez.com

On Jul 15, 2011, at 8:06 AM, Pere Urbon Bayes wrote:

HI!
I am on the situation of having to traverse neo4j, and then expect
the
resultset returned to be ordered in a certain order. I've been
researching a
bit over the traversal API, but I did not find anything related to
that.
I
really will appreciate any tip on that!!

BTW I expect to be possible right?, as we have in relational the
ordering,
or on redis, etc...

/purbon

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[Neo4j] get relationships on node during REST traversal

2011-07-15 Thread mikeagun

I am trying to return only nodes with a relationship of a given type in a
traversal using the REST API. The traversing of relationships is working
correctly, and I can successfully filter on properties, but I would like to
return only nodes with relationships of a given type, and it is not one of
the relationship types I am traversing. The problem is, every node is
showing as having no relationships in the return filter body. below is a
traverser that I have tried to use as a simplified test and got back no
results. If I add in a return true line before the current return statement,
I get back every node that has been traversed. Does getRelationships() work
in a return filter? It isn't possible that a node I have traversed to has no
relationships, so I am wondering if I am doing something wrong. the status
code is 200, the result is just an empty JSON array unless I add in code to
filter on some other criteria that returns true for some nodes.

{order:depth_first,
uniqueness:node_path,
return filter:{
  body:(function eval(pos) {
var node = pos.endNode();
var rels = pos.endNode().getRelationships();
var relIt = rels.iterator();
return relIt.hasNext();
  })(position);,
  language:javascript
},
max depth:2,
relationships:[{direction:out,type:USED}]
}

Thanks,
Michael A

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Re: [Neo4j] get relationships on node during REST traversal

Mike,

what version of Neo4j are you running this against?

Please note that the syntax for the traversal parameters changed in 1.4, they 
all now need underscores instead of spaces.

Please try to use max_depth and return_filter.

Is there a reason why you chose to use a separate eval function definition 
instead of just providing the
body for the return_filter ? Just asking.

Cheers

Michael

Am 15.07.2011 um 23:32 schrieb mikeagun:

 I am trying to return only nodes with a relationship of a given type in a
 traversal using the REST API. The traversing of relationships is working
 correctly, and I can successfully filter on properties, but I would like to
 return only nodes with relationships of a given type, and it is not one of
 the relationship types I am traversing. The problem is, every node is
 showing as having no relationships in the return filter body. below is a
 traverser that I have tried to use as a simplified test and got back no
 results. If I add in a return true line before the current return statement,
 I get back every node that has been traversed. Does getRelationships() work
 in a return filter? It isn't possible that a node I have traversed to has no
 relationships, so I am wondering if I am doing something wrong. the status
 code is 200, the result is just an empty JSON array unless I add in code to
 filter on some other criteria that returns true for some nodes.
 
 {order:depth_first,
 uniqueness:node_path,
 return filter:{
  body:(function eval(pos) {
var node = pos.endNode();
var rels = pos.endNode().getRelationships();
var relIt = rels.iterator();
return relIt.hasNext();
  })(position);,
  language:javascript
 },
 max depth:2,
 relationships:[{direction:out,type:USED}]
 }
 
 Thanks,
 Michael A
 
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Re: [Neo4j] NoSuchElementException

2011-07-15 Thread sulabh choudhury

Well while inserting the nodes I keep a
check batchInserter.nodeExists(node1) so I would guess a node would not be
duplicated.
Otherwise during a traversal I guess duplicate nodes. IIs there a way I can
look into the BtachInsert data before I flush so that I can make sure no
duplicate data has been inserted ?

On Sat, Jun 25, 2011 at 10:49 AM, sulabh choudhury sula...@gmail.comwrote:

 Thank you Jim.
 I will wait for 1.5 and hope it resolves the issue :)


 On Fri, Jun 24, 2011 at 7:11 PM, sulabh choudhury sula...@gmail.comwrote:

 Hi,

 I just downloaded the neo4j-community-1.4.M04. I stumbled into the
 java.util.NoSuchElementException: More than one element in
 org.neo4j.index.impl.lucene.LuceneIndex$1@396cbd97. First element is
 'Node[3]' and the second element is 'Node[2]'
  at
 org.neo4j.helpers.collection.IteratorUtil.singleOrNull(IteratorUtil.java:114)
 ~[working_graphGen.jar:na]
 at
 org.neo4j.index.impl.lucene.IdToEntityIterator.getSingle(IdToEntityIterator.java:88)
 ~[working_graphGen.jar:na]
  at
 org.neo4j.index.impl.lucene.IdToEntityIterator.getSingle(IdToEntityIterator.java:32)
 ~[working_graphGen.jar:na]

 I looked up and found that this is a bug and has been fixed. I was
 wondering if the fix has been incorporated in the latest Milestone or not?




 --

 --
 Thanks and Regards,
 Sulabh Choudhury




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[Neo4j] Hyperedges and Objects

2011-07-15 Thread Norbert Tausch

Hi,

is there a possibility to store hyper edges in Neo4j? Is there a plan to
implement this?

Will Neo4j get the ability to store complex types in addition to
primitve data types for properties of nodes and relationships?

-- 
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Re: [Neo4j] We now have an automatic discussion forum on the Nabble Mailing List Archive

I embedded it now at http://neo4j.org/forums

Also all links to the nabble site are now redirected by them to our page.

Thanks again to Andrew Serff for getting this up and running. And to Nabble for
the ease of integration.

Cheers

Michael

Am 15.07.2011 um 12:26 schrieb Pablo Pareja:

Cool !

It looks much more usable than the mailing list ;)

Cheers,

Pablo

On Thu, Jul 14, 2011 at 10:04 PM, Michael Hunger
michael.hun...@neotechnology.com wrote:

I forgot two things:

1) I changed all the links on neo4j.org that previously pointed to the
ugly mailman archive page to point to nabble instead.
2) The discussion mailing list vs. forum is over, I'm very happy about
that.

Michael

Am 14.07.2011 um 22:01 schrieb Michael Hunger:

They seem to have updated their UI massively, it now looks and works like
a
forum while interacting with this neo4j mailing list.

Landing page is here: http://neo4j-user-list.438527.n3.nabble.com

You can browse and search the forums from there, some hints about mailing
list usage and forum integration can be found here:

http://neo4j-user-list.438527.n3.nabble.com/mailing_list/MailingListOptions.jtp?forum=438527

There are also some more options for people that are interested like
Advanced Search, People, Topics view and an green online dot for logged
in
people.

It is embeddable as well, so we'll investigate if and how to embed it on
neo4j.org.

If you register once at nabble with the same email address you used for
this
list, you can reply and also post from there without ever having to use
your
e-mail program. (You can even turn off to receive messages, so all your
interaction can be through that forum).

You can also send HTML emails, but I strongly discourage that, if you
don't
need it (for instance for embedding relevant images or formatted source
code
(monospace).

Cheers

Michael

P.S. This post was written on nabble, so no e-mail program was harmed.

http://neo4j-user-list.438527.n3.nabble.com/file/n3170182/reality_is_a_graph.png

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Twitter http://www.twitter.com/pablopareja

http://about.me/pablopareja
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Re: [Neo4j] Hyperedges and Objects

2011-07-15 Thread Niels Hoogeveen


Hyper edges can be emulated. 
Suppose you want to store the fact John gives Pete a book. 
This is indeed a ternary relationship, which would call for an hyper edge.
This fact can be stored as follows:
Some act of giving --Giver--JohnSome act of giving --Recipient-- PeteSome act 
of giving --Gift-- book
N-ary relationships can generally be decomposed into N binary relationships, 
where a central node is used to used as a placeholder for the N-ary 
relationship.
Complex types can either be stored into a byte array or if appropriate in 
multiple properties.


 Date: Sat, 16 Jul 2011 00:04:15 +0200
 From: ntausc...@gmail.com
 To: user@lists.neo4j.org
 Subject: [Neo4j] Hyperedges and Objects
 
 Hi,
 
 is there a possibility to store hyper edges in Neo4j? Is there a plan to
 implement this?
 
 Will Neo4j get the ability to store complex types in addition to
 primitve data types for properties of nodes and relationships?
 
 -- 
 Best regards
 
 Norbert Tausch
 
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[Neo4j] Best practice to avoid Unable to lock store error?

2011-07-15 Thread noppanit

Such as. Unable to lock store [/Users/xxx/db/neostore], this is usually
caused by another Neo4j kernel already running in this JVM for this
particular store 

I'm getting this error when the the user tries to insert into the database
really fast (e.g, multiple clicks). The design that I use is to open and
shutdown after each commit. So, sometime may be the database is not finish
and the user clicks again. I think one way would be to disable the button
after one click, but is there a better way to deal with that? 

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Re: [Neo4j] Best practice to avoid Unable to lock store error?

Why would you do that?  Keep the database open as a singleton instead.

- Reply message -
From: noppanit noppani...@gmail.com
Date: Fri, Jul 15, 2011 7:00 pm
Subject: [Neo4j] Best practice to avoid Unable to lock store error?
To: user@lists.neo4j.org user@lists.neo4j.org

Such as. Unable to lock store [/Users/xxx/db/neostore], this is usually
caused by another Neo4j kernel already running in this JVM for this
particular store

I'm getting this error when the the user tries to insert into the database
really fast (e.g, multiple clicks). The design that I use is to open and
shutdown after each commit. So, sometime may be the database is not finish
and the user clicks again. I think one way would be to disable the button
after one click, but is there a better way to deal with that?

--
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Re: [Neo4j] Hyperedges and Objects

And native support for JSON types is planned as well.

Cheers

Michael

Am 16.07.2011 um 00:52 schrieb Niels Hoogeveen:

 
 Hyper edges can be emulated. 
 Suppose you want to store the fact John gives Pete a book. 
 This is indeed a ternary relationship, which would call for an hyper edge.
 This fact can be stored as follows:
 Some act of giving --Giver--JohnSome act of giving --Recipient-- PeteSome 
 act of giving --Gift-- book
 N-ary relationships can generally be decomposed into N binary relationships, 
 where a central node is used to used as a placeholder for the N-ary 
 relationship.
 Complex types can either be stored into a byte array or if appropriate in 
 multiple properties.
 
 
 Date: Sat, 16 Jul 2011 00:04:15 +0200
 From: ntausc...@gmail.com
 To: user@lists.neo4j.org
 Subject: [Neo4j] Hyperedges and Objects
 
 Hi,
 
 is there a possibility to store hyper edges in Neo4j? Is there a plan to
 implement this?
 
 Will Neo4j get the ability to store complex types in addition to
 primitve data types for properties of nodes and relationships?
 
 -- 
 Best regards
 
 Norbert Tausch
 
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Re: [Neo4j] Best practice to avoid Unable to lock store error?

Right, that will never be fast enough?

What is your reasoning behind shutting down the db after each commit?

Cheers

Michael

Am 16.07.2011 um 01:19 schrieb Rick Bullotta:

 Why would you do that?  Keep the database open as a singleton instead.
 
 
 
 - Reply message -
 From: noppanit noppani...@gmail.com
 Date: Fri, Jul 15, 2011 7:00 pm
 Subject: [Neo4j] Best practice to avoid Unable to lock store error?
 To: user@lists.neo4j.org user@lists.neo4j.org
 
 Such as. Unable to lock store [/Users/xxx/db/neostore], this is usually
 caused by another Neo4j kernel already running in this JVM for this
 particular store
 
 I'm getting this error when the the user tries to insert into the database
 really fast (e.g, multiple clicks). The design that I use is to open and
 shutdown after each commit. So, sometime may be the database is not finish
 and the user clicks again. I think one way would be to disable the button
 after one click, but is there a better way to deal with that?
 
 --
 View this message in context: 
 http://neo4j-user-list.438527.n3.nabble.com/Best-practice-to-avoid-Unable-to-lock-store-error-tp3173592p3173592.html
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[Neo4j] Neo4j with Tomcat...need a transaction manager

2011-07-15 Thread etc3

We plan on using neo4j as the database for our website, which will run on
Tomcat. Also, we'll be using ActiveMQ for sending messages within neo4j
transactions, so that leaves the question of what to use for the transaction
manager. Atomikos, JBossTM comes to mind, are we missing anything obvious?
Does neo4j provide anything out-of-box for transactions management?

 

Thanks

Jaf

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Re: [Neo4j] GSoC 2011 Weekly report - OSM data mining and editing capabilities in uDig and Geotools

2011-07-15 Thread Mirco Franzago

==  Weekly report ==

Hi all,
we started the task with the goal to write a new renderer for the OSM graph
model for uDig. We want to create a custom renderer that can render the raw
OSM dataset as a connected graph in its own layer. I started the design of a
new render in uDig to manage the graph-base structure of the OSM data model.
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Re: [Neo4j] Neo4j with Tomcat...need a transaction manager

Springsource also provides/is working on their own tomcat based XA TM. Perhaps 
you'd like to check that out.
(http://forum.springsource.org/showthread.php?76843-JTA-for-Tc-Serverp=258383#post258383)

Otherwise there is only JOTM left.

Neo4j can integrate with those TM. 
See also these blog posts by our team member Chris Gioran:
http://digitalstain.blogspot.com/2010/11/using-jotm-as-transactionmanager-in.html
http://digitalstain.blogspot.com/2011/02/springy-ouside-graphy-inside.html
http://digitalstain.blogspot.com/2010/11/neo4j-internals-transactions-part-3-as.html

Internally it uses also 2PC with the nioneo store and lucene.

Cheers

Michael

Am 16.07.2011 um 01:37 schrieb etc3:

 We plan on using neo4j as the database for our website, which will run on
 Tomcat. Also, we'll be using ActiveMQ for sending messages within neo4j
 transactions, so that leaves the question of what to use for the transaction
 manager. Atomikos, JBossTM comes to mind, are we missing anything obvious?
 Does neo4j provide anything out-of-box for transactions management?
 
 
 
 Thanks
 
 Jaf
 
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Re: [Neo4j] Neo4j with Tomcat...need a transaction manager

It's built in for neo4j.  Full jta support!

- Reply message -
From: etc3 e...@nextideapartners.com
Date: Fri, Jul 15, 2011 7:38 pm
Subject: [Neo4j] Neo4j with Tomcat...need a transaction manager
To: user@lists.neo4j.org user@lists.neo4j.org

We plan on using neo4j as the database for our website, which will run on
Tomcat. Also, we'll be using ActiveMQ for sending messages within neo4j
transactions, so that leaves the question of what to use for the transaction
manager. Atomikos, JBossTM comes to mind, are we missing anything obvious?
Does neo4j provide anything out-of-box for transactions management?

Thanks

Jaf

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[Neo4j] Key/value pairs in Neo4j

2011-07-15 Thread pdurusau

Greetings!

I tried to tweet this to @mesiru (unsuccessfully, you will see why). ;-)

Perhaps by way of example with keys at first. 

First key/value pair:

EmployeeID = 555-33-

In a U.S. context, the value is obviously the employees social security
number, a number that is assigned by the government. 

In terms of the topic maps reference model, the key, EmployeeID, is not a
primitive but rather a reference to a proxy that represents a subject. In
this case, a property class that is constrained to have a value XXX-XX-.

The reason why that is important is that a U.S. government database, say one
listing people who have paid into the system from various companies would
list:

SSN = 555-33-

as one key/value pair. 

We want to identify the subject represented by EmployeeID and SSN so that a
future user can discover why we thought they represented the same subject. 

Could simply do a mapping, EmployeeID = SSN, but any future user would be
guessing as to why we made that judgment. 

Does that help? 

I am about to break for the night but will pick this back up tomorrow
morning.

Thanks for all the hard work on Neo4j!

Patrick

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Re: [Neo4j] Neo4j with Tomcat...need a transaction manager

2011-07-15 Thread etc3

Thanks, Micheal.

The blog post from Chris was from last year; were those changes for JOTM
ever added to neo4j?

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
Behalf Of Michael Hunger
Sent: Friday, July 15, 2011 8:00 PM
To: Neo4j user discussions
Subject: Re: [Neo4j] Neo4j with Tomcat...need a transaction manager

Springsource also provides/is working on their own tomcat based XA TM.
Perhaps you'd like to check that out.
(http://forum.springsource.org/showthread.php?76843-JTA-for-Tc-Serverp=2583
83#post258383)

Otherwise there is only JOTM left.

Neo4j can integrate with those TM. 
See also these blog posts by our team member Chris Gioran:
http://digitalstain.blogspot.com/2010/11/using-jotm-as-transactionmanager-in
.html
http://digitalstain.blogspot.com/2011/02/springy-ouside-graphy-inside.html
http://digitalstain.blogspot.com/2010/11/neo4j-internals-transactions-part-3
-as.html

Internally it uses also 2PC with the nioneo store and lucene.

Cheers

Michael

Am 16.07.2011 um 01:37 schrieb etc3:

 We plan on using neo4j as the database for our website, which will run 
 on Tomcat. Also, we'll be using ActiveMQ for sending messages within 
 neo4j transactions, so that leaves the question of what to use for the 
 transaction manager. Atomikos, JBossTM comes to mind, are we missing
anything obvious?
 Does neo4j provide anything out-of-box for transactions management?

 Thanks

 Jaf

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Re: [Neo4j] Verifying the relationship between two nodes

2011-07-15 Thread Diego Alvarez Nogueira

Very good Michael, thanks!

Yes, it works!

In my case i need search by node property(:id), i did so:

index = Neography::Rest.new.get_node_index(id, :id, user1.id)
return false unless index
node = Neography::Node.load(index.first)
!node.outgoing(:knows).find{|n| n.id == user2.id.to_s}.nil?

There's another way to do this?

Thanks!

Best,
Diego Noguiera

On 15/07/2011, at 14:34, Michael Hunger wrote:

 Diego,
 
 this is code from one of my neography apps: https://github.com/jexp/birdies
 
 @users.outgoing(:USER)  user if 
 @users.rels(:USER).outgoing.to_other(user).empty?
 
 @users and user are your two nodes.
 
 So it would be:
 
 ! node1.rels(:knows).outgoing.to_other(node2).empty?
 
 Cheers
 
 Michael
 
 Am 15.07.2011 um 19:06 schrieb Diego Alvarez Nogueira:
 
 Hi,
 I'm using: ruby 1.9.2, rails 3, neo4j and neography.
 I have the following nodes and relationships:
 
 node1 = $neo.create_node(:id = 1, :name = Diego)
 node2 = $neo.create_node(:id = 2, :name = Jhon)
 $neo.create_relationship(:knows, node1, node2)
 
 My question is, how can i verify if there is a relationship between the 
 nodes with id=1 and id=2?
 
 Thanks, 
 
 Best,
 Diego Nogueira
 
 --
 Atenciosamente,
 
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 Blog: http://diegonogueira.com.br | http://papoinformal.com
 Skype: nogueiradiego
 Twitter: @nogueiradiego
 
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Re: [Neo4j] Neo4j with Tomcat...need a transaction manager

Yes they were added.

The XA-TX-Manager is configurable in Neo4j (defaults to our own but if you have 
an external one like JOTM or Atomikos) then you can configure those to be used.

Example implementation for JOTM: 
https://github.com/digitalstain/JOTMServiceProvider

Implementation in neo4j is here: 
https://github.com/neo4j/community/tree/master/kernel/src/main/java/org/neo4j/kernel/impl/transaction

Cheers

Michael

Am 16.07.2011 um 02:43 schrieb etc3:

 Thanks, Micheal.
 
 The blog post from Chris was from last year; were those changes for JOTM
 ever added to neo4j?
 
 -Original Message-
 From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
 Behalf Of Michael Hunger
 Sent: Friday, July 15, 2011 8:00 PM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Neo4j with Tomcat...need a transaction manager
 
 Springsource also provides/is working on their own tomcat based XA TM.
 Perhaps you'd like to check that out.
 (http://forum.springsource.org/showthread.php?76843-JTA-for-Tc-Serverp=2583
 83#post258383)
 
 Otherwise there is only JOTM left.
 
 Neo4j can integrate with those TM. 
 See also these blog posts by our team member Chris Gioran:
 http://digitalstain.blogspot.com/2010/11/using-jotm-as-transactionmanager-in
 .html
 http://digitalstain.blogspot.com/2011/02/springy-ouside-graphy-inside.html
 http://digitalstain.blogspot.com/2010/11/neo4j-internals-transactions-part-3
 -as.html
 
 Internally it uses also 2PC with the nioneo store and lucene.
 
 Cheers
 
 Michael
 
 Am 16.07.2011 um 01:37 schrieb etc3:
 
 We plan on using neo4j as the database for our website, which will run 
 on Tomcat. Also, we'll be using ActiveMQ for sending messages within 
 neo4j transactions, so that leaves the question of what to use for the 
 transaction manager. Atomikos, JBossTM comes to mind, are we missing
 anything obvious?
 Does neo4j provide anything out-of-box for transactions management?
 
 
 
 Thanks
 
 Jaf
 
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Re: [Neo4j] Neo4j with Tomcat...need a transaction manager

2011-07-15 Thread etc3

Michael,

If I use the default trx manager in neo4j, what connection pool driver
should be used in Tomcat?

-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
Behalf Of Michael Hunger
Sent: Friday, July 15, 2011 9:05 PM
To: Neo4j user discussions
Subject: Re: [Neo4j] Neo4j with Tomcat...need a transaction manager

Yes they were added.

The XA-TX-Manager is configurable in Neo4j (defaults to our own but if you
have an external one like JOTM or Atomikos) then you can configure those to
be used.

Example implementation for JOTM:
https://github.com/digitalstain/JOTMServiceProvider

Implementation in neo4j is here:
https://github.com/neo4j/community/tree/master/kernel/src/main/java/org/neo4
j/kernel/impl/transaction

Cheers

Michael

Am 16.07.2011 um 02:43 schrieb etc3:

 Thanks, Micheal.

 The blog post from Chris was from last year; were those changes for 
 JOTM ever added to neo4j?

 -Original Message-
 From: user-boun...@lists.neo4j.org 
 [mailto:user-boun...@lists.neo4j.org] On Behalf Of Michael Hunger
 Sent: Friday, July 15, 2011 8:00 PM
 To: Neo4j user discussions
 Subject: Re: [Neo4j] Neo4j with Tomcat...need a transaction manager

 Springsource also provides/is working on their own tomcat based XA TM.
 Perhaps you'd like to check that out.
 (http://forum.springsource.org/showthread.php?76843-JTA-for-Tc-Server;
 p=2583
 83#post258383)

 Otherwise there is only JOTM left.

 Neo4j can integrate with those TM. 
 See also these blog posts by our team member Chris Gioran:
 http://digitalstain.blogspot.com/2010/11/using-jotm-as-transactionmana
 ger-in
 .html
 http://digitalstain.blogspot.com/2011/02/springy-ouside-graphy-inside.
 html
 http://digitalstain.blogspot.com/2010/11/neo4j-internals-transactions-
 part-3
 -as.html

 Internally it uses also 2PC with the nioneo store and lucene.

 Cheers

 Michael

 Am 16.07.2011 um 01:37 schrieb etc3:

 We plan on using neo4j as the database for our website, which will 
 run on Tomcat. Also, we'll be using ActiveMQ for sending messages 
 within neo4j transactions, so that leaves the question of what to use 
 for the transaction manager. Atomikos, JBossTM comes to mind, are we 
 missing
 anything obvious?
 Does neo4j provide anything out-of-box for transactions management?

 Thanks

 Jaf

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 https://lists.neo4j.org/mailman/listinfo/user

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 https://lists.neo4j.org/mailman/listinfo/user

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[Neo4j] gremlin tables question

2011-07-15 Thread Boris Kizelshteyn

this works:

   - gremlin t=new Table();v = g.v(2);v.outE.inV.as('node')[0..5].table(t);
   - == v[95]
   - == v[94]
   - == v[93]
   - == v[92]
   - == v[91]
   - == v[90]
   - gremlin t
   - == [node:v[95]]
   - == [node:v[94]]
   - == [node:v[93]]
   - == [node:v[92]]
   - == [node:v[91]]
   - == [node:v[90]]

While this gives no results:

t=new Table();v = g.v(2);v.outE.inV.as('node')[0..5].table(t); t;

Why?

Many thanks!
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Re: [Neo4j] gremlin tables question