Package org.apache.tinkerpop.gremlin.process.traversal

Interface TraversalStrategy.OptimizationStrategy

All Superinterfaces:

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

All Known Implementing Classes:

AdjacentToIncidentStrategy, ByModulatorOptimizationStrategy, CountStrategy, EarlyLimitStrategy, FilterRankingStrategy, GraphFilterStrategy, GValueReductionStrategy, IdentityRemovalStrategy, IncidentToAdjacentStrategy, InlineFilterStrategy, LazyBarrierStrategy, MatchPredicateStrategy, MessagePassingReductionStrategy, OrderLimitStrategy, PathProcessorStrategy, PathRetractionStrategy, ProductiveByStrategy, RepeatUnrollStrategy

Enclosing interface:

TraversalStrategy<S extends TraversalStrategy>

public static interface TraversalStrategy.OptimizationStrategy
extends TraversalStrategy<TraversalStrategy.OptimizationStrategy>

Implemented by strategies that rewrite the traversal to be more efficient, but with the same semantics (e.g. CountStrategy). During a re-write ONLY TinkerPop steps should be used. For strategies that utilize provider specific steps, use TraversalStrategy.ProviderOptimizationStrategy.

Nested Class Summary

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

TraversalStrategy.DecorationStrategy, TraversalStrategy.FinalizationStrategy, TraversalStrategy.OptimizationStrategy, TraversalStrategy.ProviderOptimizationStrategy, TraversalStrategy.VerificationStrategy

Method Summary

Modifier and Type	Method	Description
default Set<Class<? extends TraversalStrategy.OptimizationStrategy>>	applyPost()	The GValueReductionStrategy should be the last TinkerPop optimnization strategy applied.
default int	compareTo(Class<? extends TraversalStrategy> otherTraversalCategory)
default Class<TraversalStrategy.OptimizationStrategy>	getTraversalCategory()	The type of traversal strategy -- i.e.

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

apply, applyPrior, getConfiguration

Method Details

getTraversalCategory

default Class<TraversalStrategy.OptimizationStrategy> getTraversalCategory()

Description copied from interface: TraversalStrategy

The type of traversal strategy -- i.e. TraversalStrategy.DecorationStrategy, TraversalStrategy.OptimizationStrategy, TraversalStrategy.FinalizationStrategy, or TraversalStrategy.VerificationStrategy.

Specified by:

getTraversalCategory in interface TraversalStrategy<TraversalStrategy.OptimizationStrategy>

Returns:

the traversal strategy category class

compareTo

default int compareTo(Class<? extends TraversalStrategy> otherTraversalCategory)

Specified by:

compareTo in interface Comparable<Class<? extends TraversalStrategy>>

Specified by:

compareTo in interface TraversalStrategy<TraversalStrategy.OptimizationStrategy>

applyPost

default Set<Class<? extends TraversalStrategy.OptimizationStrategy>> applyPost()

The GValueReductionStrategy should be the last TinkerPop optimnization strategy applied. Adding it here ensures will help to enforce that more globally. Implementations overriding this method should have a good reason to ignore this.

Specified by:

applyPost in interface TraversalStrategy<TraversalStrategy.OptimizationStrategy>

Returns:

the set of strategies that must be executed post this one