Hi Nuo,
I've been playing with this for a little while, and after talking it over with
the devteam, I'm pretty certain that want you want to do isn't yet possible
through the REST API. To solve your problem, you'd need a return filter like:
"position.endNode().hasProperty('name') &&
!position.endNode().hasRelationship('bar')"
It's the hasRelationship(String) function that's not available here.
Instead, I'd suggest you code your traversal against one of the Java APIs and
deploy it as an unmanaged extension or server plugin:
http://docs.neo4j.org/chunked/snapshot/server-unmanaged-extensions.html
http://docs.neo4j.org/chunked/snapshot/server-plugins.html
Jim
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