org.apache.tinkerpop.gremlin.tinkergraph.process.traversal.strategy.optimization

Class TinkerGraphCountStrategy

java.lang.Object

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

org.apache.tinkerpop.gremlin.tinkergraph.process.traversal.strategy.optimization.TinkerGraphCountStrategy

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 final class TinkerGraphCountStrategy
extends org.apache.tinkerpop.gremlin.process.traversal.strategy.AbstractTraversalStrategy<org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy>
implements org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy.ProviderOptimizationStrategy

This strategy will do a direct TinkerHelper.getVertices(org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerVertex, org.apache.tinkerpop.gremlin.structure.Direction, java.lang.String...) size call if the traversal is a count of the vertices and edges of the graph or a one-to-one map chain thereof.

Author:

Marko A. Rodriguez (http://markorodriguez.com)

See Also:

Serialized Form

Example:

 g.V().count()               // is replaced by TinkerCountGlobalStep
 g.V().map(out()).count()    // is replaced by TinkerCountGlobalStep
 g.E().label().count()       // is replaced by TinkerCountGlobalStep
 

Nested Class Summary

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 TinkerGraphCountStrategy	instance()

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

apply

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

Specified by:

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

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>

instance

public static TinkerGraphCountStrategy instance()