Is this not because blueprints does not respect the neo4j reference node, and so deletes it (really clears the graph). Is there a way to create the reference node again? Perhaps as simple as db.createNode(), and the first will be node 0?
On Wed, Mar 2, 2011 at 12:08 PM, Peter Neubauer < [email protected]> wrote: > Mmh, > have you committed the transaction after your clear, and How are you > trying to create the Relationship? It seems you are trying to use Node > 0 for it, which you have deleted before? In that case, you need to add > a new node and use that as the starting point for your relationship? > > 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://startupbootcamp.org/ - Öresund - Innovation happens HERE. > http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. > > > > On Wed, Mar 2, 2011 at 11:44 AM, Alfredas Chmieliauskas > <[email protected]> wrote: > > Dear all, > > > > a crazy primitive question. How do I clear a graph (without doing rm -f) > ? > > If I delete all the nodes and relationships or use blueprints > > graph.clear() I get a weird error later when adding new nodes: > > > > Caused by: java.lang.IllegalStateException: First node[0] is deleted > > and cannot be used to create a relationship > > at > org.neo4j.kernel.impl.nioneo.xa.WriteTransaction.relationshipCreate(WriteTransaction.java:1475) > > at > org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaConnection$RelationshipEventConsumerImpl.createRelationship(NeoStoreXaConnection.java:257) > > at > org.neo4j.kernel.impl.nioneo.xa.NioNeoDbPersistenceSource$NioNeoDbResourceConnection.relationshipCreate(NioNeoDbPersistenceSource.java:371) > > at > org.neo4j.kernel.impl.persistence.PersistenceManager.relationshipCreate(PersistenceManager.java:154) > > at > org.neo4j.kernel.impl.core.NodeManager.createRelationship(NodeManager.java:310) > > at > org.neo4j.kernel.impl.core.NodeImpl.createRelationshipTo(NodeImpl.java:388) > > at > org.neo4j.kernel.impl.core.NodeProxy.createRelationshipTo(NodeProxy.java:187) > > at > org.neo4j.util.GraphDatabaseUtil.getOrCreateSingleOtherNode(GraphDatabaseUtil.java:137) > > at > org.neo4j.util.GraphDatabaseUtil.getOrCreateSubReferenceNode(GraphDatabaseUtil.java:167) > > at > org.neo4j.util.GraphDatabaseUtil.getOrCreateSubReferenceNode(GraphDatabaseUtil.java:150) > > at > org.springframework.data.graph.neo4j.support.GraphDatabaseContext.getOrCreateSubReferenceNode(GraphDatabaseContext.java:275) > > at > org.springframework.data.graph.neo4j.support.SubReferenceNodeTypeStrategy.obtainSubreferenceNode(SubReferenceNodeTypeStrategy.java:167) > > at > org.springframework.data.graph.neo4j.support.SubReferenceNodeTypeStrategy.postEntityCreation(SubReferenceNodeTypeStrategy.java:66) > > at > org.springframework.data.graph.neo4j.support.GraphDatabaseContext.postEntityCreation(GraphDatabaseContext.java:219) > > at > org.springframework.data.graph.neo4j.fieldaccess.NodeEntityStateAccessors.createAndAssignState(NodeEntityStateAccessors.java:54) > > at > org.springframework.data.graph.neo4j.fieldaccess.DetachableEntityStateAccessors.createAndAssignState(DetachableEntityStateAccessors.java:113) > > at > org.springframework.data.graph.neo4j.support.node.Neo4jNodeBacking.ajc$before$org_springframework_data_graph_neo4j_support_node_Neo4jNodeBacking$1$74591ff9(Neo4jNodeBacking.aj:84) > > > > Also I'm using Spring Data Graph to create new nodes and relations. > > > > Any ideas? > > > > Alfredas > > _______________________________________________ > > Neo4j mailing list > > [email protected] > > https://lists.neo4j.org/mailman/listinfo/user > > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
