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Posted to dev@tinkerpop.apache.org by "Andrey Skorikov (JIRA)" <ji...@apache.org> on 2019/01/12 14:23:00 UTC

[jira] [Created] (TINKERPOP-2133) Use neo4j indicex lookup in Neo4jGraphStep with HasContainers containing TextP predicates

Andrey Skorikov created TINKERPOP-2133:
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             Summary: Use neo4j indicex lookup in Neo4jGraphStep with HasContainers containing TextP predicates
                 Key: TINKERPOP-2133
                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2133
             Project: TinkerPop
          Issue Type: Improvement
          Components: neo4j
    Affects Versions: 3.4.0
            Reporter: Andrey Skorikov


When evaluating a Neo4jGraphStep with HasContainers containing TextP predicates, for example: g.V().has("Label", "name", TextP.containing("substring")), a scan over all vertices with the label is performed.

Currently, an index lookup is used only when an complete property value is given, that is g.V().has("Label", "name", "exact") - implemented [here|https://github.com/apache/tinkerpop/blob/master/neo4j-gremlin/src/main/java/org/apache/tinkerpop/gremlin/neo4j/structure/trait/NoMultiNoMetaNeo4jTrait.java#L172].

Allowing to use an index lookup for TextP predicates like containing, startingWith would substantially improve the evaluation performance.



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