RepeatUnrollStrategy (Apache TinkerPop 3.8.0 API)

java.lang.Object
- org.apache.tinkerpop.gremlin.process.traversal.strategy.AbstractTraversalStrategy<TraversalStrategy.OptimizationStrategy>
- - org.apache.tinkerpop.gremlin.process.traversal.strategy.optimization.RepeatUnrollStrategy

All Implemented Interfaces:

Serializable, Comparable<Class<? extends TraversalStrategy>>, TraversalStrategy<TraversalStrategy.OptimizationStrategy>, TraversalStrategy.OptimizationStrategy
```
public final class RepeatUnrollStrategy
extends AbstractTraversalStrategy<TraversalStrategy.OptimizationStrategy>
implements TraversalStrategy.OptimizationStrategy
```
RepeatUnrollStrategy is an OLTP-only strategy that unrolls any RepeatStep if it uses a constant number of loops (times(x)) and doesn't emit intermittent elements. The strategy only applies to repeat traversals that contain exclusively safe, stateless steps from the allowed set:
Steps that are not in this allowed set will prevent the strategy from being applied. This allowed set of steps is intentionally conservative as there have been unintentional traversal semantics changes in the past when allowing a large variety of steps (especially barriers). Only steps that can be safely executed outside the repeat (and not modify semantics of the traversal) should be included. The allowed set can be expanded in future versions as additional steps are verified to be safe.
Author:

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

See Also:

Serialized Form

Example:
```
     __.repeat(out()).times(2)   // is replaced by __.out().barrier(2500).out().barrier(2500)
 
```

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

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 RepeatUnrollStrategy`	`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
applyPrior, getConfiguration

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

- 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.OptimizationStrategy>
  - instance
```
public static RepeatUnrollStrategy instance()
```