Thanks for a quick answer, Mattias. Sorry for a stupid questions, just haven't noticed the inheritance of Relationship interface.
On 28 January 2010 19:43, Mattias Persson <[email protected]> wrote: > Relationship has all the property methods, just like Node... they're > actually on PropertyContainer (a common super interface to Node and > Relationship) see > http://api.neo4j.org/current/org/neo4j/graphdb/Relationship.html and > http://api.neo4j.org/current/org/neo4j/graphdb/PropertyContainer.html > for more information. > > So to manage the cost in a dijkstra algorithm you can use whatever > property key, f.ex. "weight", like this: > > Relationship rel = ... // any relationship > rel.setProperty( "weight", 4 ); > > And if you're using the Dijkstra algorithms in the "neo4j-graph-algo" > component, http://components.neo4j.org/neo4j-graph-algo/ , you can > instantiate it with a CostEvaluator instance something like this: > > new CostEvaluator<Integer>() > { > CostType getCost( Relationship relationship, boolean backwards ) > { > / TODO Handle backwards flag? > return ( Integer ) relationship.getProperty( "weight", 1 ); > } > } > > ...and pass it to your Dijkstra algo instance. > > Is this what you were looking for? > > 2010/1/28 Anton Popov <[email protected]>: > > Hello everyone, > > > > Is there any possibility to assign properties to Relations? > > The matter is I want to try Dijkstra algorithm performance on some > weighted > > directed graph and don't know where to put weight actually... > > > > -- > > Best regards, > > Popov Anton > > _______________________________________________ > > Neo mailing list > > [email protected] > > https://lists.neo4j.org/mailman/listinfo/user > > > > > > -- > Mattias Persson, [[email protected]] > Neo Technology, www.neotechnology.com > _______________________________________________ > Neo mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > -- Best regards, Popov Anton _______________________________________________ Neo mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
