You definately found a bug. I'll try to fix it today so that it is
fixed in the next milestone. Thanks for the report and I'll get back
to you here when it is done!
2010/11/4, Balazs E. Pataki <pat...@dsd.sztaki.hu>:
> Hi,
>
> I don't know if it is a bug or not, but the following code:
>
> GraphDatabaseService graphDb = new
> EmbeddedGraphDatabase("x-lucene-indexer-bug");
> Transaction tx = graphDb.beginTx();
> try {
> Node n1 = graphDb.createNode();
> Node n2 = graphDb.createNode();
> Relationship r = n1.createRelationshipTo(n2,
> DynamicRelationshipType.withName("foo"));
> graphDb.index().forRelationships("rel-index").remove(r, "bar", "value");
> graphDb.index().forRelationships("rel-index").add(r, "bar",
> "otherValue");
> tx.success();
> } finally {
> tx.finish();
> }
>
> causes this exception:
>
> java.lang.ClassCastException: java.lang.Long cannot be cast to
> org.neo4j.index.impl.lucene.RelationshipId
> at
> org.neo4j.index.impl.lucene.LuceneDataSource$4.newDocument(LuceneDataSource.java:180)
> at
> org.neo4j.index.impl.lucene.CommitContext.getDocument(CommitContext.java:94)
> at
> org.neo4j.index.impl.lucene.LuceneCommand$RemoveCommand.perform(LuceneCommand.java:220)
> at
> org.neo4j.index.impl.lucene.LuceneTransaction.doCommit(LuceneTransaction.java:233)
> at
> org.neo4j.kernel.impl.transaction.xaframework.XaTransaction.commit(XaTransaction.java:319)
> at
> org.neo4j.kernel.impl.transaction.xaframework.XaResourceManager.commit(XaResourceManager.java:440)
> at
> org.neo4j.kernel.impl.transaction.xaframework.XaResourceHelpImpl.commit(XaResourceHelpImpl.java:65)
> at
> org.neo4j.kernel.impl.transaction.TransactionImpl.doCommit(TransactionImpl.java:517)
> at
> org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:621)
> at
> org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:584)
> at
> org.neo4j.kernel.impl.transaction.TransactionImpl.commit(TransactionImpl.java:105)
> at
> org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:86)
>
>
> What is unusual here is that I try to remove a Relationship from the
> index without adding it first. Why I tried this?
>
> As far as I know, there is no way to know (by asking from the Index or
> IndexManager) whether a relationship (or node) has been indexed before
> with a given key and value or not. So, to be safe I remove the
> Relationship with the key and value I suppose it has and then add it
> again with a new value for the same key. Maybe it is not reasonable to
> do so, but nevertheless I think it should not throw the above exception
> in this case. Or should it? Should I produce the same exception
> semantics in our own indexer (SphinxProvider) as well?
>
> Regards,
> ---
> balazs
> _______________________________________________
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> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user
>
--
Mattias Persson, [matt...@neotechnology.com]
Hacker, Neo Technology
www.neotechnology.com
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