Re: [Neo4j] Regarding Weighted Node
You could index your nodes with weights in an index and then query them in a
sorted manner. For example:
private Node createWeightedNode( int weight )
{
Node node = graphDb.createNode();
node.setProperty( "weight", 3 );
graphDb.index().forNodes( "weights" ).add( node, "weight",
ValueContext.numeric( weight ) );
}
Node nodeA = createWeightedNode( 3 );
Node nodeB = createWeightedNode( 2 );
Node nodeC = createWeightedNode( 5 );
// Verbose as hell
QueryContext query = new QueryContext(
NumericRangeQuery.newIntRange( "weight", 2, 5, true, true ) )
.sort( new Sort( new SortField( "weight", SortField.INT, false ) ) );
for ( Node node : graphDb.index().forNodes( "weights" ).query( query ) )
{
System.out.println( node.getProperty( "weight" ) );
}
2011/5/3 pooja naik
> Hi Tobias,
>
> I wanted to know whether Neo4j does that sorting for me, rather than me
> externally sorting each time I delete and insert a node
>
> Thanks
> Pooja
>
>
>
> From: Tobias Ivarsson
> To: Neo4j user discussions
> Sent: Tuesday, May 3, 2011 1:20 PM
> Subject: Re: [Neo4j] Regarding Weighted Node
>
> Hi Pooja,
>
> You could add the weight as a property on the nodes.
>
> For inserting the nodes in a particular order, if you have a complete
> dataset when you insert you can always sort it before you insert it. Or did
> I misunderstand your question?
>
> Cheers,
> Tobias
>
> On Tue, May 3, 2011 at 7:24 PM, pooja naik wrote:
>
> > Hi
> >
> > Is there a way in neo 4j to add weights to the node ?
> >
> > I want to add weights to the node and want to insert and delete nodes in
> > the increasing order of weight?
> >
> > For example:
> >
> > The following is the graph/tree representation I am interested in.
> >
> > Parent
> > node 1 - weight 1
> >
> > Has children with weights
> >
> > Node 2 - weight 3, node 3- weight 5
> >
> >
> >
> >
> >
> >
> > So the insertion of node4 -weight 4 will go before node3- weight 5 and
> > after node 2- 3
> >
> >
> >
> > Regards
> > Pooja
> > ___
> > Neo4j mailing list
> > User@lists.neo4j.org
> > https://lists.neo4j.org/mailman/listinfo/user
> >
>
>
>
> --
> Tobias Ivarsson
> Hacker, Neo Technology
> www.neotechnology.com
> Cellphone: +46 706 534857
> ___
> 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
___
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Re: [Neo4j] Regarding Weighted Node
Hi Tobias, I wanted to know whether Neo4j does that sorting for me, rather than me externally sorting each time I delete and insert a node Thanks Pooja From: Tobias Ivarsson To: Neo4j user discussions Sent: Tuesday, May 3, 2011 1:20 PM Subject: Re: [Neo4j] Regarding Weighted Node Hi Pooja, You could add the weight as a property on the nodes. For inserting the nodes in a particular order, if you have a complete dataset when you insert you can always sort it before you insert it. Or did I misunderstand your question? Cheers, Tobias On Tue, May 3, 2011 at 7:24 PM, pooja naik wrote: > Hi > > Is there a way in neo 4j to add weights to the node ? > > I want to add weights to the node and want to insert and delete nodes in > the increasing order of weight? > > For example: > > The following is the graph/tree representation I am interested in. > > Parent > node 1 - weight 1 > > Has children with weights > > Node 2 - weight 3, node 3- weight 5 > > > > > > > So the insertion of node4 -weight 4 will go before node3- weight 5 and > after node 2- 3 > > > > Regards > Pooja > ___ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Tobias Ivarsson Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 ___ 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] Regarding Weighted Node
Hi Pooja, You could add the weight as a property on the nodes. For inserting the nodes in a particular order, if you have a complete dataset when you insert you can always sort it before you insert it. Or did I misunderstand your question? Cheers, Tobias On Tue, May 3, 2011 at 7:24 PM, pooja naik wrote: > Hi > > Is there a way in neo 4j to add weights to the node ? > > I want to add weights to the node and want to insert and delete nodes in > the increasing order of weight? > > For example: > > The following is the graph/tree representation I am interested in. > > Parent > node 1 - weight 1 > > Has children with weights > > Node 2 - weight 3, node 3- weight 5 > > > > > > > So the insertion of node4 -weight 4 will go before node3- weight 5 and > after node 2- 3 > > > > Regards > Pooja > ___ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Tobias Ivarsson Hacker, Neo Technology www.neotechnology.com Cellphone: +46 706 534857 ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
[Neo4j] Regarding Weighted Node
Hi Is there a way in neo 4j to add weights to the node ? I want to add weights to the node and want to insert and delete nodes in the increasing order of weight? For example: The following is the graph/tree representation I am interested in. Parent node 1 - weight 1 Has children with weights Node 2 - weight 3, node 3- weight 5 So the insertion of node4 -weight 4 will go before node3- weight 5 and after node 2- 3 Regards Pooja ___ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
