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Versions: 9
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Contents
module Neo4j
module Relationships
# Wrapper for org.neo4j.graphdb.ReturnableEvaluator
#
# :api: private
class ReturnableEvaluator #:nodoc:
include org.neo4j.graphdb.ReturnableEvaluator
def initialize(proc, raw = false)
@proc = proc
@raw = raw
end
def isReturnableNode( traversal_position )
# if the Proc takes one argument that we give it the traversal_position
result = if @proc.arity == 1
# wrap the traversal_position in the Neo4j.rb TraversalPostion object
@proc.call TraversalPosition.new(traversal_position, @raw)
else # otherwise we eval the proc in the context of the current node
# do not include the start node
return false if traversal_position.isStartNode()
eval_context = Neo4j::load_node(traversal_position.currentNode.getId, @raw)
eval_context.instance_eval(&@proc)
end
# java does not treat nil as false so we need to do it instead
(result)? true : false
end
end
# Wrapper for the neo4j org.neo4j.graphdb.StopEvalutor interface.
# Used in the Neo4j Traversers.
#
# :api: private
class DepthStopEvaluator #:nodoc:
include org.neo4j.graphdb.StopEvaluator
def initialize(depth)
@depth = depth
end
def isStopNode(pos)
pos.depth >= @depth
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems