Onur, add a property to each node to hold the surragate key from your RDBMS...
Dan On 14 Aug 2009, at 15:30, Onur AKTAS <onur.ak...@live.com> wrote: > > Thank you for your response. I'm trying to understand the main > concept, please correct me if I am wrong. > > For example, there are many users of an application and each > represented as "Node". And each User has a "UserId" in RDBMS. I > have checked "Node" class and saw that there is a method called as " > getId() " but I could not see "setId()" for mapping the User in the > RDBMS to neo4j. > > Sample data: (UserId / Friends Ids) > 1 - [2, 4] > 2 - [1, 3] > 3 - [10] > 4 - [1, 3, 5] > 5 - [3] > > And I need to query " What are the all shortest paths from 1 to 10 > for max length 4 " > And results should be, > > 1 -> 2 -> 3 -> 10 > 1 -> 4 -> 3 -> 10 > * 1 -> 4 -> 5 -> 3 -> 10 (It will not be shown because it exceeds > the length 4). > > You mean that it can be handled with neo4j, but how can I map each > User in RDBMS, to Nodes by their original Ids? > > Thanks. > > > >> From: neubauer.pe...@gmail.com >> Date: Wed, 5 Aug 2009 11:16:15 +0200 >> To: user@lists.neo4j.org >> Subject: Re: [Neo] neo4j Beginner Question >> >> Hi Onur >> >> 2009/8/4 Onur AKTAS <onur.ak...@live.com>: >>> Calculating,"friends of friends", 3rd degree contacts or 4th >>> degree etc. is not a good idea with RDBMS. In short words, neo4j >>> fits perfectly for these kinds of jobs? >> yes, that is the kind of problems Neo4j and Graph Databases are >> trying >> to solve in general. Semi-structured data, havy use of relational >> information between information entities and complex analysis of high >> depth fast are some of the common use cases for using a graph >> database. >> >>> Do we have a chance to scale neo4j by adding nodes, does it >>> support distributed processing? Also, can we delete any node in >>> the graph when we need to delete user or we must create the entire >>> graph again when we need any updates? Do graph objects have id's >>> that helps us to find the node quickly? >> >> Neo4j atm does not support distributed processing or partitioning the >> graph. There is high-availability and online-backup being worked on >> which feels more acute since Neo4j on a single instance scales over 1 >> Billion primitives, which should be enough for most immediate >> scenarios. >> But there are of course ways to achieve a custom partitioning using >> targeted techniques - but that depends on your use case ... >> >> HTH >> >> /peter >> _______________________________________________ >> Neo mailing list >> User@lists.neo4j.org >> https://lists.neo4j.org/mailman/listinfo/user > > _________________________________________________________________ > Anılarınızı istediğiniz herkesle çevrimiçi paylaşın. > http://www.microsoft.com/turkiye/windows/windowslive/products/photos-share.aspx?tab=1 > _______________________________________________ > Neo mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
