How can I specify which relationship type to use as a function of the current node at every step of a traversal with neo4j?

问题

I'd like to traverse my graph using the neo4j traversal API, but I need to be able to specify which relationship type to use at every step, and the relationship type to use needs to be a function of the current node. Is there a way to do this?

回答1:

in the current Traverser API you can't choose the exact relationship to traverse. Instead, you take the more granular approach of node.getRelationships(), chose the one you want and the end onde on it, and so on. The algo gets a bit more verbose than using Traverser, but gives you more flexibility. For a tinkering approach, Gremlin supports the notion of functions for choosing edges to traverse, see here. This will soon be implemented using Blueprint Pipes for Java-level performance.

HTH

/peter neubauer

来源：https://stackoverflow.com/questions/2430196/how-can-i-specify-which-relationship-type-to-use-as-a-function-of-the-current-no