org.janusgraph.graphdb.tinkerpop.optimize.strategy

Class AdjacentVertexHasUniquePropertyOptimizerStrategy

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.strategy.AbstractTraversalStrategy<org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy>

org.janusgraph.graphdb.tinkerpop.optimize.strategy.AdjacentVertexOptimizerStrategy<org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?>>

org.janusgraph.graphdb.tinkerpop.optimize.strategy.AdjacentVertexHasUniquePropertyOptimizerStrategy

All Implemented Interfaces:

Serializable, Comparable<Class<? extends org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy>>, org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy<org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy>, org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy

public class AdjacentVertexHasUniquePropertyOptimizerStrategy
extends AdjacentVertexOptimizerStrategy<org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?>>

Author:

Florian Grieskamp (Florian.Grieskamp@gdata.de)

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.janusgraph.graphdb.tinkerpop.optimize.strategy.AdjacentVertexOptimizerStrategy

AdjacentVertexOptimizerStrategy.OptimizablePosition

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy

org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.DecorationStrategy, org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.FinalizationStrategy, org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.OptimizationStrategy, org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy, org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.VerificationStrategy

Field Summary

Fields inherited from interface org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy

STRATEGY

Method Summary

Modifier and Type	Method and Description
void	apply(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal)
Set<Class<? extends org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy>>	applyPost()
static AdjacentVertexHasUniquePropertyOptimizerStrategy	instance()
protected boolean	isValidStep(org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?> step) Determines whether this HasStep can be answered by a unique index and thus, returns either 0 or 1 match
protected org.apache.tinkerpop.gremlin.process.traversal.step.filter.FilterStep<org.apache.tinkerpop.gremlin.structure.Edge>	makeFilterByAdjacentIdStep(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal, org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?> originalStep)

Methods inherited from class org.janusgraph.graphdb.tinkerpop.optimize.strategy.AdjacentVertexOptimizerStrategy

optimizeStep

Methods inherited from class org.apache.tinkerpop.gremlin.process.traversal.strategy.AbstractTraversalStrategy

equals, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy

compareTo, getTraversalCategory

Methods inherited from interface org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy

applyPrior, getConfiguration

Method Detail

instance

public static AdjacentVertexHasUniquePropertyOptimizerStrategy instance()

applyPost

public Set<Class<? extends org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy>> applyPost()

Specified by:

applyPost in interface org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy<org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy>

Overrides:

applyPost in class AdjacentVertexOptimizerStrategy<org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?>>

apply

public void apply(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal)

isValidStep

protected boolean isValidStep(org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?> step)

Determines whether this HasStep can be answered by a unique index and thus, returns either 0 or 1 match

Specified by:

isValidStep in class AdjacentVertexOptimizerStrategy<org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?>>

makeFilterByAdjacentIdStep

protected org.apache.tinkerpop.gremlin.process.traversal.step.filter.FilterStep<org.apache.tinkerpop.gremlin.structure.Edge> makeFilterByAdjacentIdStep(org.apache.tinkerpop.gremlin.process.traversal.Traversal.Admin<?,?> traversal,
                                                                                                                                                        org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?> originalStep)

Specified by:

makeFilterByAdjacentIdStep in class AdjacentVertexOptimizerStrategy<org.apache.tinkerpop.gremlin.process.traversal.step.filter.HasStep<?>>