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Posted to dev@tinkerpop.apache.org by "Martijn Maas (JIRA)" <ji...@apache.org> on 2016/02/09 14:12:18 UTC
[jira] [Created] (TINKERPOP-1139) [Neo4JGraph] GraphTraversal with
SubgraphStrategy removes addLabelStep (as("b"))
Martijn Maas created TINKERPOP-1139:
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Summary: [Neo4JGraph] GraphTraversal with SubgraphStrategy removes addLabelStep (as("b"))
Key: TINKERPOP-1139
URL: https://issues.apache.org/jira/browse/TINKERPOP-1139
Project: TinkerPop
Issue Type: Bug
Affects Versions: 3.1.0-incubating
Reporter: Martijn Maas
I am using the Neo4jGraph with the following SubgraphStrategy:
SubgraphStrategy.build().vertexCriterion(has("isLatest", true)).create();
I have 2 traversals. This one working works:
Map<String, Long> languageCounts = searchResult.as("a").inE("isCreatedBy").outV().outE("hasWorkLanguage").inV().as("b").dedup("a", "b")
.has("wwlanguage_name").<String>groupCount()
.by("wwlanguage_name").next();
This translates to:
[Neo4jGraphStep([],vertex)@[a], TraversalFilterStep([HasStep([isLatest.eq(true)])]), VertexStep(IN,[isCreatedBy],edge), TraversalFilterStep([AndStep([[EdgeVertexStep(IN), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([HasStep([isLatest.eq(true)])])], [EdgeVertexStep(OUT), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([HasStep([isLatest.eq(true)])])]])]), EdgeVertexStep(OUT), TraversalFilterStep([HasStep([isLatest.eq(true)])]), VertexStep(OUT,[hasWorkLanguage],edge), TraversalFilterStep([AndStep([[EdgeVertexStep(IN), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([HasStep([isLatest.eq(true)])])], [EdgeVertexStep(OUT), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([HasStep([isLatest.eq(true)])])]])]), EdgeVertexStep(IN)@[b], TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([PropertiesStep([wwlanguage_name],property)]), DedupGlobalStep([a, b]), GroupCountStep(value(wwlanguage_name))]
This one fails:
Map<String, Long> languageCounts = searchResult.as("a").in("isCreatedBy").out("hasWorkLanguage").as("b")
.dedup("a", "b").has("wwlanguage_name")
.<String>groupCount().by("wwlanguage_name").next();
This translates to:
[Neo4jGraphStep([],vertex)@[a], TraversalFilterStep([HasStep([isLatest.eq(true)])]), VertexStep(IN,[isCreatedBy],edge), TraversalFilterStep([AndStep([[EdgeVertexStep(IN), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([HasStep([isLatest.eq(true)])])], [EdgeVertexStep(OUT), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([HasStep([isLatest.eq(true)])])]])]), EdgeVertexStep(OUT), TraversalFilterStep([HasStep([isLatest.eq(true)])]), VertexStep(OUT,[hasWorkLanguage],edge), TraversalFilterStep([AndStep([[EdgeVertexStep(IN), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([HasStep([isLatest.eq(true)])])], [EdgeVertexStep(OUT), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([HasStep([isLatest.eq(true)])])]])]), EdgeVertexStep(IN), TraversalFilterStep([HasStep([isLatest.eq(true)])]), TraversalFilterStep([PropertiesStep([wwlanguage_name],property)]), DedupGlobalStep([a, b]), GroupCountStep(value(wwlanguage_name))]
The failing query misses the '@[b]' of the last EdgeVertexStep(IN).
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