org.janusgraph.graphdb.tinkerpop.optimize

Class JanusGraphTraversalUtil

java.lang.Object

org.janusgraph.graphdb.tinkerpop.optimize.JanusGraphTraversalUtil

public class JanusGraphTraversalUtil
extends Object

Author:

Matthias Broecheler (me@matthiasb.com)

Constructor Summary

Constructors

Constructor and Description
JanusGraphTraversalUtil()

Method Summary

Modifier and Type	Method and Description
static JanusGraphVertex	getJanusGraphVertex(org.apache.tinkerpop.gremlin.structure.Element v)
static JanusGraphVertex	getJanusGraphVertex(org.apache.tinkerpop.gremlin.process.traversal.Traverser<? extends org.apache.tinkerpop.gremlin.structure.Element> traverser)
static List<org.apache.tinkerpop.gremlin.process.traversal.Step>	getMultiQueryCompatibleSteps(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal) This method searches the traversal for traversal parents which are multiQuery compatible.
static org.apache.tinkerpop.gremlin.process.traversal.Step	getNextNonIdentityStep(org.apache.tinkerpop.gremlin.process.traversal.Step start)
static JanusGraphTransaction	getTx(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal)
static boolean	isEdgeReturnStep(JanusGraphVertexStep vertexStep)
static boolean	isMultiQueryCompatibleStep(org.apache.tinkerpop.gremlin.process.traversal.Step<?,?> currentStep)
static boolean	isVertexReturnStep(JanusGraphVertexStep vertexStep)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JanusGraphTraversalUtil

public JanusGraphTraversalUtil()

Method Detail

getJanusGraphVertex

public static JanusGraphVertex getJanusGraphVertex(org.apache.tinkerpop.gremlin.structure.Element v)

getJanusGraphVertex

public static JanusGraphVertex getJanusGraphVertex(org.apache.tinkerpop.gremlin.process.traversal.Traverser<? extends org.apache.tinkerpop.gremlin.structure.Element> traverser)

isEdgeReturnStep

public static boolean isEdgeReturnStep(JanusGraphVertexStep vertexStep)

isVertexReturnStep

public static boolean isVertexReturnStep(JanusGraphVertexStep vertexStep)

getNextNonIdentityStep

public static org.apache.tinkerpop.gremlin.process.traversal.Step getNextNonIdentityStep(org.apache.tinkerpop.gremlin.process.traversal.Step start)

getTx

public static JanusGraphTransaction getTx(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal)

getMultiQueryCompatibleSteps

public static List<org.apache.tinkerpop.gremlin.process.traversal.Step> getMultiQueryCompatibleSteps(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal)

This method searches the traversal for traversal parents which are multiQuery compatible. Being multiQuery compatible is not solely determined by the class of the parent step, it must also have a vertex step as the first step in one of its local or global children.

Parameters:

traversal - The traversal in which to search for multiQuery compatible steps

Returns:

A list of traversal parents which were multiQuery compatible

isMultiQueryCompatibleStep

public static boolean isMultiQueryCompatibleStep(org.apache.tinkerpop.gremlin.process.traversal.Step<?,?> currentStep)