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Versions: 24
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Contents
module Neo4j
module Core
module Traversal
# Implements the Neo4j Evaluator Java interface, only used internally.
# @private
class Evaluator
include Java::OrgNeo4jGraphdbTraversal::Evaluator
def initialize(&eval_block)
@eval_block = eval_block
end
# Implements the Java Interface:
# evaluate(Path path)
# Evaluates a Path and returns an Evaluation containing information about whether or not to include it in the traversal result, i.e return it from the Traverser.
def evaluate(path)
ret = @eval_block.call(path)
case ret
when :exclude_and_continue then
Java::OrgNeo4jGraphdbTraversal::Evaluation::EXCLUDE_AND_CONTINUE
when :exclude_and_prune then
Java::OrgNeo4jGraphdbTraversal::Evaluation::EXCLUDE_AND_PRUNE
when :include_and_continue then
Java::OrgNeo4jGraphdbTraversal::Evaluation::INCLUDE_AND_CONTINUE
when :include_and_prune then
Java::OrgNeo4jGraphdbTraversal::Evaluation::INCLUDE_AND_PRUNE
else
raise "Got #{ret}, only accept :exclude_and_continue,:exclude_and_prune,:include_and_continue and :include_and_prune"
end
end
end
end
end
end
Version data entries
24 entries across 24 versions & 1 rubygems