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

## Class AdjacentToIncidentStrategy

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

- All Implemented Interfaces:
    Serializable, Comparable<Class<? extends TraversalStrategy>>, TraversalStrategy<TraversalStrategy.OptimizationStrategy>, TraversalStrategy.OptimizationStrategy

      public final class AdjacentToIncidentStrategy
      extends AbstractTraversalStrategy<TraversalStrategy.OptimizationStrategy>
      implements TraversalStrategy.OptimizationStrategy

  This strategy looks for vertex- and value-emitting steps followed by a `CountGlobalStep` and replaces the pattern with an edge- or property-emitting step followed by a `CountGlobalStep`. Furthermore, if a vertex- or value-emitting step is the last step in a `.has(traversal)`, `.and(traversal, ...)` or `.or(traversal, ...)` child traversal, it is replaced by an appropriate edge- or property-emitting step.

  Author:
    Daniel Kuppitz (http://gremlin.guru)
  See Also:
    Serialized Form
  Example:

         __.out().count()            // is replaced by __.outE().count()
         __.in().limit(3).count()    // is replaced by __.inE().limit(3).count()
         __.values("name").count()   // is replaced by __.properties("name").count()
         __.where(__.out())          // is replaced by __.where(__.outE())
         __.where(__.values())       // is replaced by __.where(__.properties())
         __.and(__.in(), __.out())   // is replaced by __.and(__.inE(), __.outE())

- - ### 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`

  - ### Field Summary

    - ### Fields inherited from interface org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy

      `STRATEGY`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `apply(Traversal.Admin<?,?> traversal)`
    `Set<Class<? extends TraversalStrategy.OptimizationStrategy>>` | `applyPrior()` The set of strategies that must be executed before this strategy is executed.
    `static AdjacentToIncidentStrategy` | `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.OptimizationStrategy

      `compareTo, getTraversalCategory`

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

      `applyPost, getConfiguration`

- - ### Method Detail

    - #### apply

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

      Specified by:
        `apply` in interface `TraversalStrategy<TraversalStrategy.OptimizationStrategy>`

    - #### applyPrior

          public Set<Class<? extends TraversalStrategy.OptimizationStrategy>> applyPrior()

      Description copied from interface: `TraversalStrategy`
      The set of strategies that must be executed before this strategy is executed. If there are no ordering requirements, the default implementation returns an empty set.
      Specified by:
        `applyPrior` in interface `TraversalStrategy<TraversalStrategy.OptimizationStrategy>`
      Returns:
        the set of strategies that must be executed prior to this one.

    - #### instance

          public static AdjacentToIncidentStrategy instance()

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