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https://issues.apache.org/jira/browse/TINKERPOP-1139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15332272#comment-15332272
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ASF GitHub Bot commented on TINKERPOP-1139:
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Github user dkuppitz commented on the issue:
https://github.com/apache/tinkerpop/pull/338
VOTE: +1
> [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
> Components: neo4j
> Affects Versions: 3.1.0-incubating
> Reporter: Martijn Maas
> Fix For: 3.1.3
>
>
> I am using the Neo4jGraph with the following SubgraphStrategy:
> {code}
> SubgraphStrategy.build().vertexCriterion(has("isLatest", true)).create();
> {code}
> I have 2 traversals. This one working works:
> {code}
> 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();
> {code}
> This translates to:
> {code}
> [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))]
> {code}
> This one fails:
> {code}
> 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();
> {code}
> This translates to:
> {code}
> [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))]
> {code}
> The failing query misses the '@[b]' of the last EdgeVertexStep(IN).
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