Hi John, maybe you are trying to add a property that has a value of String[] with at least one of the array members being null?. That would cause the first exception. The second exception is most probably because you try to success() and finish() your transaction even after the exception.
For the first issue, always make sure that you are not adding null values, not even as members of an array. For the second issue, make sure that you have a try/catch block around your transactional code that does tx.success() only when everything is in place, with the catch block doing the tx.failure(). At the finally block, just do tx.finish() - that should do it. In code: Transaction tx = db.beginTx(); try { // do tx stuff here tx.success(); } catch (Exception e) { tx.failure(); } finally { tx.finish(); } Hope the above help. If your code does not conform to my assumptions please share some more details. cheers, CG On Thu, Aug 25, 2011 at 5:43 AM, John Howard <johnyho...@gmail.com> wrote: > I am using embedded 1.4.1 > > I get these 2 strange exceptions almost simultaneously when try to create a > new property. > > java.lang.NullPointerException > at > org.neo4j.kernel.impl.nioneo.store.DynamicArrayStore.allocateFromString(DynamicArrayStore.java:142) > at > org.neo4j.kernel.impl.nioneo.store.DynamicArrayStore.allocateRecords(DynamicArrayStore.java:369) > at > org.neo4j.kernel.impl.nioneo.store.PropertyStore.allocateArrayRecords(PropertyStore.java:466) > at > org.neo4j.kernel.impl.nioneo.store.PropertyStore.encodeValue(PropertyStore.java:535) > at > org.neo4j.kernel.impl.nioneo.xa.WriteTransaction.nodeAddProperty(WriteTransaction.java:1314) > at > org.neo4j.kernel.impl.nioneo.xa.WriteTransaction.nodeAddProperty(WriteTransaction.java:1741) > at > org.neo4j.kernel.impl.persistence.PersistenceManager.nodeAddProperty(PersistenceManager.java:140) > at > org.neo4j.kernel.impl.core.NodeManager.nodeAddProperty(NodeManager.java:849) > at org.neo4j.kernel.impl.core.NodeImpl.addProperty(NodeImpl.java:101) > at org.neo4j.kernel.impl.core.Primitive.setProperty(Primitive.java:411) > at org.neo4j.kernel.impl.core.NodeProxy.setProperty(NodeProxy.java:120) > at graph.createProperty(graph.java:232) > > and then > org.neo4j.graphdb.TransactionFailureException: Unable to commit transaction > at org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:98) > Caused by: javax.transaction.RollbackException: Failed to commit, > transaction rolledback > at > org.neo4j.kernel.impl.transaction.TxManager.rollbackCommit(TxManager.java:811) > at org.neo4j.kernel.impl.transaction.TxManager.commit(TxManager.java:645) > at > org.neo4j.kernel.impl.transaction.TransactionImpl.commit(TransactionImpl.java:109) > at org.neo4j.kernel.TopLevelTransaction.finish(TopLevelTransaction.java:85) > ... 40 more > > > TIA > > John > _______________________________________________ > 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