Thanks Axel, that did it.
Most of the tutorials (especially the getting started guide) don't show this,
so I'd recommend to include it. It's a bit confusing, especially when you come
from the relational database environment or even an ORM mapper, where .commit()
/ .rollback() usually closes the transaction as well.
Thanks for your help,
Roman
-----Ursprüngliche Nachricht-----
Von: Roman Uhlig
Gesendet: Dienstag, 26. Oktober 2010 16:01
An: technik
Betreff: Re: Neo4j tutorial
You forgot tx.success() in the try{} block, see
http://wiki.neo4j.org/content/Transactions#Controlling_success.
Greetings
Axel
Am 26.10.2010 11:19, schrieb Roman Uhlig:
> Hi,
> I'm completely new to Neo4j and got an issue while trying the getting started
> guide.
>
> Everytime I close the database (GraphDatabaseService.shutdown()) and open it
> again later, all data is gone (or was never saved). I did exactly as
> described in the guide, so maybe someone can point me in the right direction?
> Probably just some stupid mistake by me. ;)
>
> My tiny test case (Windows, Java 1.6):
>
> Writing data:
>
> GraphDatabaseService db = new EmbeddedGraphDatabase("/temp/neo4j/test1");
> try {
> org.neo4j.graphdb.Transaction tx = db.beginTx();
> try {
> Node rootNode = db.getReferenceNode();
> Node firstNode = db.createNode();
> rootNode.createRelationshipTo(firstNode,
> IdabaRelTypes.ROOT_TYPES);
> } finally {
> tx.finish();
> }
> } finally {
> db.shutdown();
> }
>
> Reading data:
>
> GraphDatabaseService db = new EmbeddedGraphDatabase("/temp/neo4j/test1");
> try {
> org.neo4j.graphdb.Transaction tx = db.beginTx();
> try {
> Node rootNode = db.getReferenceNode();
> for (Relationship rel : rootNode.getRelationships()) {
> // output test data, but nothing in it
> }
> } finally {
> tx.finish();
> }
> } finally {
> db.shutdown();
> }
>
>
> Thanks in advance,
> Roman
> _______________________________________________
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> User at lists.neo4j.org
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--
Axel Morgner
Creative Solutions - Software Engineering
GUI& UX Design - Project Management
c/o inxire GmbH
Hanauer Landstr. 293a
60314 Frankfurt
Germany
Phone +49 151 40522060
E-mail axel at morgner.de
Web http://morgner.de
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