Package org.eclipse.rdf4j.query.algebra.evaluation.impl

## Class EvaluationStatistics

- java.lang.Object
- - org.eclipse.rdf4j.query.algebra.evaluation.impl.EvaluationStatistics

- Direct Known Subclasses:
    `ExtensibleEvaluationStatistics`, `FederationEvaluationStatistics`, `TupleFunctionEvaluationStatistics`

      public class EvaluationStatistics
      extends Object

  Supplies various query model statistics to the query engine/optimizer.
  Author:
    Arjohn Kampman, James Leigh

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class | Description
    --- | --- | ---
    `protected static class` | `EvaluationStatistics.CardinalityCalculator` |

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `EvaluationStatistics()` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `protected EvaluationStatistics.CardinalityCalculator` | `createCardinalityCalculator()` |
    `double` | `getCardinality​(TupleExpr expr)` |

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### EvaluationStatistics

          public EvaluationStatistics()

  - ### Method Detail

    - #### getCardinality

          public double getCardinality​(TupleExpr expr)

    - #### createCardinalityCalculator

          protected EvaluationStatistics.CardinalityCalculator createCardinalityCalculator()