org.apache.tinkerpop.gremlin.process.traversal.strategy.verification

Class EdgeLabelVerificationStrategy

java.lang.Object

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

org.apache.tinkerpop.gremlin.process.traversal.strategy.verification.EdgeLabelVerificationStrategy

All Implemented Interfaces:

Serializable, Comparable<Class<? extends TraversalStrategy>>, TraversalStrategy<TraversalStrategy.VerificationStrategy>, TraversalStrategy.VerificationStrategy

public final class EdgeLabelVerificationStrategy
extends AbstractTraversalStrategy<TraversalStrategy.VerificationStrategy>
implements TraversalStrategy.VerificationStrategy

EdgeLabelVerificationStrategy does not allow edge traversal steps to have no label specified. Providing one or more labels is considered to be a best practice, however, TinkerPop will not force the specification of edge labels; instead, providers or users will have to enable this strategy explicitly.

Author:

Daniel Kuppitz (http://gremlin.guru)

See Also:

Serialized Form

Example:

 __.outE()           // throws an IllegalStateException
 __.out()            // throws an IllegalStateException
 __.bothE()          // throws an IllegalStateException
 __.to(OUT)          // throws an IllegalStateException
 __.toE(IN)          // throws an IllegalStateException
 

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EdgeLabelVerificationStrategy.Builder

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

TraversalStrategy.DecorationStrategy, TraversalStrategy.FinalizationStrategy, TraversalStrategy.OptimizationStrategy, TraversalStrategy.ProviderOptimizationStrategy, 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(Traversal.Admin<?,?> traversal)
static EdgeLabelVerificationStrategy.Builder	build()
static EdgeLabelVerificationStrategy	create(Configuration configuration)
Configuration	getConfiguration() Get the configuration representation of this strategy.

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.VerificationStrategy

compareTo, getTraversalCategory

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

applyPost, applyPrior

Method Detail

apply

public void apply(Traversal.Admin<?,?> traversal)

Specified by:

apply in interface TraversalStrategy<TraversalStrategy.VerificationStrategy>

create

public static EdgeLabelVerificationStrategy create(Configuration configuration)

getConfiguration

public Configuration getConfiguration()

Description copied from interface: TraversalStrategy

Get the configuration representation of this strategy. This is useful for converting a strategy into a serialized form.

Specified by:

getConfiguration in interface TraversalStrategy<TraversalStrategy.VerificationStrategy>

Returns:

the configuration used to create this strategy

build

public static EdgeLabelVerificationStrategy.Builder build()