Concerning "PathExpender versus RelationshipExpender" all I could find was this:
http://neo4j.com/docs/stable/tutorial-traversal-java-api.html#_pathexpander_relationshipexpander
Does this mean, that the RelationshipExpender is deprecated?
In case it is not deprecated, what is the difference between them?
Yes, RelationshipExpander
is deprecated.
http://neo4j.com/docs/stable/javadocs/org/neo4j/graphdb/RelationshipExpander.html