Re: [Neo4j] Clear graph (delete all nodes and relations)
On Thu, Mar 3, 2011 at 12:30 PM, Peter Neubauer wrote: > Well, > reference nodes are not part of the Blueprints API. Neo4j is not > decided yet how and if to change the reference node approach. Either > make it a setup option, keep it, or remove it totally. > > Marko is coming over in April, so there will be fighting at the Malmö > office over this :) Sounds great. Let us know who wins. ... just to be clear - for now there's no elegant way to "clear" the graph using blueprints or spring-data-graph api, right? Thanks, Alfredas > > 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 Thu, Mar 3, 2011 at 12:12 PM, Alfredas Chmieliauskas > wrote: >> On Wed, Mar 2, 2011 at 12:14 PM, Peter Neubauer >> wrote: >>> Well, >>> you can set the reference node to anything, so you could do >>> >>> graph.delete(); >>> newRoot = neo4j.createNode(); >>> neo4j.setReferenceNode(newRoot); >> >> I bet this is the problem: the reference node gets deleted. I one of >> solving it would be not to delete the ref node at all. >> The other way is as you have outlined here, I'm just not sure that >> there's a method setReferenceNode() (at least could not find it). >> >> Also - where is Marko? It would be great to have your opinion on whats >> happening from the point of view of blueprints neo4j impl. >> >> Alfredas >> >>> >>> 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 12:10 PM, Craig Taverner wrote: 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 < peter.neuba...@neotechnology.com> 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 > 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(Gra
Re: [Neo4j] Clear graph (delete all nodes and relations)
Well, reference nodes are not part of the Blueprints API. Neo4j is not decided yet how and if to change the reference node approach. Either make it a setup option, keep it, or remove it totally. Marko is coming over in April, so there will be fighting at the Malmö office over this :) 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 Thu, Mar 3, 2011 at 12:12 PM, Alfredas Chmieliauskas wrote: > On Wed, Mar 2, 2011 at 12:14 PM, Peter Neubauer > wrote: >> Well, >> you can set the reference node to anything, so you could do >> >> graph.delete(); >> newRoot = neo4j.createNode(); >> neo4j.setReferenceNode(newRoot); > > I bet this is the problem: the reference node gets deleted. I one of > solving it would be not to delete the ref node at all. > The other way is as you have outlined here, I'm just not sure that > there's a method setReferenceNode() (at least could not find it). > > Also - where is Marko? It would be great to have your opinion on whats > happening from the point of view of blueprints neo4j impl. > > Alfredas > >> >> 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 12:10 PM, Craig Taverner wrote: >>> 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 < >>> peter.neuba...@neotechnology.com> 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 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.o
Re: [Neo4j] Clear graph (delete all nodes and relations)
On Wed, Mar 2, 2011 at 12:14 PM, Peter Neubauer wrote: > Well, > you can set the reference node to anything, so you could do > > graph.delete(); > newRoot = neo4j.createNode(); > neo4j.setReferenceNode(newRoot); I bet this is the problem: the reference node gets deleted. I one of solving it would be not to delete the ref node at all. The other way is as you have outlined here, I'm just not sure that there's a method setReferenceNode() (at least could not find it). Also - where is Marko? It would be great to have your opinion on whats happening from the point of view of blueprints neo4j impl. Alfredas > > 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 12:10 PM, Craig Taverner wrote: >> 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 < >> peter.neuba...@neotechnology.com> 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 >>> 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$74591ff9(Neo4jNodeBacking.aj:84) >>> > >>> > Also I'm u
Re: [Neo4j] Clear graph (delete all nodes and relations)
2011/3/2 Craig Taverner : > Is this not because blueprints does not respect the neo4j reference node, > and so deletes it (really clears the graph). Is there a way to create the > reference node again? Perhaps as simple as db.createNode(), and the first > will be node 0? I believe Tinkerpop not caring about the reference node is the reason, yes. > > On Wed, Mar 2, 2011 at 12:08 PM, Peter Neubauer < > peter.neuba...@neotechnology.com> wrote: > >> Mmh, >> have you committed the transaction after your clear, and How are you >> trying to create the Relationship? It seems you are trying to use Node >> 0 for it, which you have deleted before? In that case, you need to add >> a new node and use that as the starting point for your relationship? >> >> Cheers, >> >> /peter neubauer >> >> GTalk: neubauer.peter >> Skype peter.neubauer >> Phone +46 704 106975 >> LinkedIn http://www.linkedin.com/in/neubauer >> Twitter http://twitter.com/peterneubauer >> >> http://www.neo4j.org - Your high performance graph database. >> http://startupbootcamp.org/ - Öresund - Innovation happens HERE. >> http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. >> >> >> >> On Wed, Mar 2, 2011 at 11:44 AM, Alfredas Chmieliauskas >> wrote: >> > Dear all, >> > >> > a crazy primitive question. How do I clear a graph (without doing rm -f) >> ? >> > If I delete all the nodes and relationships or use blueprints >> > graph.clear() I get a weird error later when adding new nodes: >> > >> > Caused by: java.lang.IllegalStateException: First node[0] is deleted >> > and cannot be used to create a relationship >> > at >> org.neo4j.kernel.impl.nioneo.xa.WriteTransaction.relationshipCreate(WriteTransaction.java:1475) >> > at >> org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaConnection$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 >> > 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 >> > ___ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Clear graph (delete all nodes and relations)
Well, you can set the reference node to anything, so you could do graph.delete(); newRoot = neo4j.createNode(); neo4j.setReferenceNode(newRoot); 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 12:10 PM, Craig Taverner wrote: > 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 < > peter.neuba...@neotechnology.com> 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 >> 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 >> > 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 >> > ___ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > ___
Re: [Neo4j] Clear graph (delete all nodes and relations)
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 < peter.neuba...@neotechnology.com> 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 > 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$74591ff9(Neo4jNodeBacking.aj:84) > > > > Also I'm using Spring Data Graph to create new nodes and relations. > > > > Any ideas? > > > > Alfredas > > ___ > > Neo4j mailing list > > User@lists.neo4j.org > > https://lists.neo4j.org/mailman/listinfo/user > > > ___ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
Re: [Neo4j] Clear graph (delete all nodes and relations)
Mmh, have you committed the transaction after your clear, and How are you trying to create the Relationship? It seems you are trying to use Node 0 for it, which you have deleted before? In that case, you need to add a new node and use that as the starting point for your relationship? Cheers, /peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph database. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Wed, Mar 2, 2011 at 11:44 AM, Alfredas Chmieliauskas wrote: > Dear all, > > a crazy primitive question. How do I clear a graph (without doing rm -f) ? > If I delete all the nodes and relationships or use blueprints > graph.clear() I get a weird error later when adding new nodes: > > Caused by: java.lang.IllegalStateException: First node[0] is deleted > and cannot be used to create a relationship > at > org.neo4j.kernel.impl.nioneo.xa.WriteTransaction.relationshipCreate(WriteTransaction.java:1475) > at > org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaConnection$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$74591ff9(Neo4jNodeBacking.aj:84) > > Also I'm using Spring Data Graph to create new nodes and relations. > > Any ideas? > > Alfredas > ___ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Clear graph (delete all nodes and relations)
Dear all, a crazy primitive question. How do I clear a graph (without doing rm -f) ? If I delete all the nodes and relationships or use blueprints graph.clear() I get a weird error later when adding new nodes: Caused by: java.lang.IllegalStateException: First node[0] is deleted and cannot be used to create a relationship at org.neo4j.kernel.impl.nioneo.xa.WriteTransaction.relationshipCreate(WriteTransaction.java:1475) at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaConnection$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 User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
