We are using node-id property references (the node id as a property), qualified with a "logical server" reference, to provide this type of binding across graphs. If you combine these with an index, you can actually get a lot of the functionality of relationships "cross graph", spanning physical boundaries. Of course, as Craig points out, this all has to be done at the application level, including dealing with cascading deletes when a node is removed from one graph, ensuring that references to it in another graph are removed/redirected.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Craig Taverner Sent: Saturday, July 02, 2011 6:03 AM To: Neo4j user discussions Subject: Re: [Neo4j] reify links with other neo4j databases located on different distributed servers As far as I know there is no internal support for transparent traversals across shards. Generally people are doing that in the application layer. However, I think there might be a middle ground of sorts. I we modify the relationship expander, I could imagine that relationships that are between shards could be modified to return node on the other shard. This would make the traversal return nodes across shards, but since I've not tried this myself, I am uncertain if there are other consequences. On Sat, Jul 2, 2011 at 4:03 AM, Aliabbas Petiwala <[email protected]>wrote: > Hi, > > I cannot figure out how my application logic can reify links with > other neo4j databases located on different distributed servers? > hence , how can i make the traversals and graph algorithms transparent > to the location of the different databases ? > -- > Aliabbas Petiwala > M.Tech CSE > _______________________________________________ > 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
