HI Eddy,
the way I do it in java with JPA (relational) and graph:
* store the row-primary key + table in a property of the node/relationship
* index the table:key for the node
I didn't change the relational schema at all:
Then I hooked into events:
* when a node is loaded I get table + id from
Hi,
I'm interested by the "Multi-master" feature like explained here
http://www.assembla.com/spaces/orientdb/wiki/Multi-master_server_architecture.
i'm also interested to discuss this proposition...
What do you think ?
What re you remarks ?
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Which version are you using for luke? You might need to use the same version as
your Lucene core. The latest one I think it's 3.xx
Sent from my BlackBerry® wireless device
-Original Message-
From: "consultpreet [via Neo4j Community Discussions]"
Date: Wed, 14 Sep 2011 06:43:17
To: nopp
> From: *Eddy Respondek*
> Date: Wed, Sep 14, 2011 at 11:30 AM
> To: gremlin-us...@googlegroups.com
>
>
> This may be a little off topic but maybe someone has done something similar
> before.
>
> Basically I have a separate Wordpress site (php/mysql) which I've been
> extending significantly and I
Hello everybody,
I have some questions regarding data storage in neo4j. How does neo4j store
the data on the physical level? Are elements which have a close relationship
in the graph stored in an adjacent way on disk? Any special binary format?
How do you treat SSDs compared to common harddisks? W
Hi all,
as far as i know, the Batch Inserter Index has a slightly different
behaviour than the default LuceneIndex:
1. It supports the addition of multiple Key/Value pairs at once and
2. Multiple calls to add() will result in multiple Index entries
The default Lucene Index implementation does n
Hi,
You can find a decent explanation for pre-1.4 storage layout here:
http://digitalstain.blogspot.com/2010/10/neo4j-internals-file-storage.html
It has not been updated however to explain extended addressing for 4B+
entities in a db (which do not change the layout, just the semantics
of some b
>
There is no shame in producing good work and sharing it with others.
Marko.
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First of hi to all Graphistas & especially the Springraphistas (Michael &
the gang)
I want to congratulate you all guys for SDG - I finally got to write more
than a few lines, and it simply rules!
Release of 1.1 has added a lot of great functionality, especially in terms
of querying (Cypher, Greml
Can anyone help w/ this question? =) Thanks!
Aseem
On Thu, Sep 8, 2011 at 9:58 AM, Aseem Kishore wrote:
> Hey guys, quick question on indexing.
>
> We track Amazon products in our db, and the way Amazon identifies its
> products is with an Amazon Standard Identification Number (ASIN). The only
>
hi all,
I have implemented a function
UserFactory.get_or_create_with_external_id(long external_id). the
function basically search the index, see if a node already created and
has the property "external_id" equals to external_id. if there is such
a node, return, if not, create one, assign property a
We finally decided that it should be added.
http://docs.neo4j.org/chunked/snapshot/query-function.html#functions-id
It's in snapshot, and will be part of our next stable release.
Andrés
On Thu, Aug 25, 2011 at 2:39 AM, Aseem Kishore wrote:
> Hey guys,
>
> Is there any way I can have Cypher re
Nice!
Cheers,
/peter neubauer
GTalk: neubauer.peter
Skype peter.neubauer
Phone +46 704 106975
LinkedIn http://www.linkedin.com/in/neubauer
Twitter http://twitter.com/peterneubauer
http://www.neo4j.org - Your high performance graph database.
http://startupbo
I think this falls into the category of "best to try it". I would simulate a
couple million items and see what kind of performance you get in both scenarios.
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j.org] On
Behalf Of Aseem Kishore
Sent: Wedn
Awesome! Great to hear. Thanks Andrés!
Aseem
On Wed, Sep 14, 2011 at 12:58 PM, Peter Neubauer <
peter.neuba...@neotechnology.com> wrote:
> Nice!
>
> Cheers,
>
> /peter neubauer
>
> GTalk: neubauer.peter
> Skype peter.neubauer
> Phone +46 704 106975
> LinkedIn http://www.linked
And now it's in code.
http://docs.neo4j.org/chunked/snapshot/query-match.html#match-optional-relationship
Hope that helps,
Andrés
On Thu, Aug 25, 2011 at 10:34 PM, Andres Taylor <
andres.tay...@neotechnology.com> wrote:
> Good and valid requests, Aseem.
>
> Consider them heard. We'll see how s
Awesome! Thanks again!
Aseem
On Wed, Sep 14, 2011 at 12:59 PM, Andres Taylor <
andres.tay...@neotechnology.com> wrote:
> And now it's in code.
>
>
> http://docs.neo4j.org/chunked/snapshot/query-match.html#match-optional-relationship
>
> Hope that helps,
>
> Andrés
>
> On Thu, Aug 25, 2011 at 10:
If a second thread reads that there is no node with external_id 123 in
between the time that a first thread finds no node and elects to create it,
you will get 2 nodes with external_id 123. So yes, you need to introduce a
lock and synchronize.
You can create read locks in the graph database but yo
McKinley
Thank you very much for the detailed explanation. however, I don't get
the part about "only one JVM will access database".
neo4j doesn't support multiple JVMs has write access to the same db, right?
On Wed, Sep 14, 2011 at 9:14 PM, McKinley wrote:
> If a second thread reads that there is
I mean that if you are not running the REST server or high availability then
you can assume that even if you only put the read lock in the Java
thread/object world, the database will not change. No other process exists
that could change it. You do not need to bother with a read lock in the
database
Got it. i really appreciate your help.
On Wed, Sep 14, 2011 at 11:14 PM, McKinley wrote:
> I mean that if you are not running the REST server or high availability then
> you can assume that even if you only put the read lock in the Java
> thread/object world, the database will not change. No othe
At CFoundry you can access local storage but it is not persistent.
No access to local storage at Heroku, don't know about the others. Sorry.
Only IaaS as AWS.
Cheers
Michael
Am 09.09.2011 um 06:40 schrieb Christopher Schmidt:
> Hi all,
>
> I am using (the embedded version of) Neo4j together
Hello everyone,
Anybody can tell me more about the cache mechanism of Neo4j?
When use this code get both fans of two user. The result will be auto cache?
or Not?
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You can run Java on Windows Azure with persistent file storage.
(Microsoft even ship Eclipse tooling support and everything for Azure.)
That's how we're hosting neo4j on my current project.
-- Tatham
-Original Message-
From: user-boun...@lists.neo4j.org [mailto:user-boun...@lists.neo4j
A bit more info ...
The individual Azure machines will get spun up and down as you do new
deployments, etc.
The storage is called "Cloud Drive" and is an Azure page blob which gets
mounted as a drive letter. (It's the equivalent of uploading a VHD (Virtual
Hard Drive) file to Amazon's S3, then
On a note,
we are testing Neo4j HA installations on Azure, so there will be
samples coming out soon for that.
Cheers,
/peter neubauer
GTalk: neubauer.peter
Skype peter.neubauer
Phone +46 704 106975
LinkedIn http://www.linkedin.com/in/neubauer
Twitter http://twitter.com/pe
Hi,
What design pattern do you recommend for user authentication and authorization
in neo4j graph?I'm searching a simple and flexible way to restrict the access
to certain part of graph which is dynamically depends on the user and
role...etc.How to avoid excessive traversing?
Any idea is apprec
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