A couple questions: - What are you changing? The properties of the relationship(s) or the relationships themselves? - Are you relationships many-to-many, one-to-many, or one-to-one?
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of cnordenfelt Sent: Thursday, August 11, 2011 1:55 PM To: [email protected] Subject: Re: [Neo4j] Change multiple relations in one operation Thanks For now I'm just prototyping and the case might be that there are several millions of relationshids that has to be changed in one transaction. However, it is a very uncommon operation and it might also be that the graph design should be changed to limit the number of relationships? //Carl On Thu, Aug 11, 2011 at 6:04 PM, Peter Neubauer [via Neo4j Community Discussions] <[email protected]> wrote: > Carl, > this is what you can do. Relationships are immutable, that is, once > created you have to delete them and create new ones in order to change > endpoints. Not much choice there. What is the size of your > reassignments and the number of relationships in one transaction? > > 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 > > <a href="http://www.neo4j.org ">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, Aug 11, 2011 at 4:47 PM, cnordenfelt <[hidden > email]<http://user/SendEmail.jtp?type=node&node=3246384&i=0>> > wrote: > > > Hi > > I have started to digg into neo4j and have not found a nice way to change > > > many relationships from one node to another. For example, I have n1 with > a > > relationship to m1, m2 and m3. Now I would like to change the > relationship > > to point from n2 to m1, m2 and m3 instead. I could of course fetch all > > relationships from n1 and change each relationship individually to n2 but > > > this will make me iterate over all relationships, which could be quite > many. > > Is there any way to replace a node with another or to "reassign" multiple > > > relationships with one operation? > > > > I'm currently using the Java API. > > > > Thanks > > Carl > > > > -- > > View this message in context: > http://neo4j-community-discussions.438527.n3.nabble.com/Change-multiple-relations-in-one-operation-tp3246141p3246141.html > > Sent from the Neo4j Community Discussions mailing list archive at > Nabble.com. > > _______________________________________________ > > Neo4j mailing list > > [hidden email] <http://user/SendEmail.jtp?type=node&node=3246384&i=1> > > https://lists.neo4j.org/mailman/listinfo/user > > > _______________________________________________ > Neo4j mailing list > [hidden email] <http://user/SendEmail.jtp?type=node&node=3246384&i=2> > https://lists.neo4j.org/mailman/listinfo/user > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > > http://neo4j-community-discussions.438527.n3.nabble.com/Change-multiple-relations-in-one-operation-tp3246141p3246384.html > To unsubscribe from Change multiple relations in one operation, click > here<http://neo4j-community-discussions.438527.n3.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=3246141&code=Y2FybC5ub3JkZW5mZWx0QGdtYWlsLmNvbXwzMjQ2MTQxfDQwNDcxMjI=>. > > -- View this message in context: http://neo4j-community-discussions.438527.n3.nabble.com/Change-multiple-relations-in-one-operation-tp3246141p3246722.html Sent from the Neo4j Community Discussions mailing list archive at Nabble.com. _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
