ProviderGValueReductionStrategy (Apache TinkerPop 3.8.0 API)

java.lang.Object
- org.apache.tinkerpop.gremlin.process.traversal.strategy.AbstractTraversalStrategy<TraversalStrategy.ProviderOptimizationStrategy>
- - org.apache.tinkerpop.gremlin.process.traversal.strategy.provider.ProviderGValueReductionStrategy

All Implemented Interfaces:

Serializable, Comparable<Class<? extends TraversalStrategy>>, TraversalStrategy<TraversalStrategy.ProviderOptimizationStrategy>, TraversalStrategy.ProviderOptimizationStrategy
```
public class ProviderGValueReductionStrategy
extends AbstractTraversalStrategy<TraversalStrategy.ProviderOptimizationStrategy>
implements TraversalStrategy.ProviderOptimizationStrategy
```
Converts placeholder steps that hold GValue objects to their concrete implementations. While not an optimization in and of itself, the GValue functionality in general, provides a mechanism for traversal optimization so falls in this category. In addition, converting to concrete steps at this stage also allows provider optimization strategies to execute on concrete steps, rather than step interfaces. Concrete steps are much easier to reason about and keep strategy application simple for the vast majority of providers.
Providers hoping to do more advanced optimizations that require GValue objects to be present for their strategies will need to remove ProviderGValueReductionStrategy and offer their own mechanism for converting step placeholders to concrete steps.

See Also:

Serialized Form

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

Constructor Summary

Constructors
Constructor Description

ProviderGValueReductionStrategy()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`apply(Traversal.Admin<?,?> traversal)`	The transformation the strategy applies to the traversal.
`static ProviderGValueReductionStrategy`	`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
applyPost, applyPrior, getConfiguration

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

- Constructor Detail
  - ProviderGValueReductionStrategy
```
public ProviderGValueReductionStrategy()
```
- Method Detail
  - apply
```
public void apply(Traversal.Admin<?,?> traversal)
```
    Description copied from interface: TraversalStrategy
    
    The transformation the strategy applies to the traversal.
    
    Specified by:
    
    apply in interface TraversalStrategy<TraversalStrategy.ProviderOptimizationStrategy>
  - instance
```
public static ProviderGValueReductionStrategy instance()
```