Package org.optaplanner.core.impl.score.stream.drools.quad

## Class DroolsExistsQuadConstraintStream<Solution_,​A,​B,​C,​D>

- java.lang.Object
- - org.optaplanner.core.impl.score.stream.common.AbstractConstraintStream<Solution_>
  - - org.optaplanner.core.impl.score.stream.drools.common.DroolsAbstractConstraintStream<Solution_>
    - - org.optaplanner.core.impl.score.stream.drools.quad.DroolsAbstractQuadConstraintStream<Solution_,​A,​B,​C,​D>
      - - org.optaplanner.core.impl.score.stream.drools.quad.DroolsExistsQuadConstraintStream<Solution_,​A,​B,​C,​D>

- All Implemented Interfaces:
    `ConstraintStream`, `QuadConstraintStream<A,​B,​C,​D>`, `InnerQuadConstraintStream<A,​B,​C,​D>`

      public final class DroolsExistsQuadConstraintStream<Solution_,​A,​B,​C,​D>
      extends DroolsAbstractQuadConstraintStream<Solution_,​A,​B,​C,​D>

- - ### Field Summary

    - ### Fields inherited from class org.optaplanner.core.impl.score.stream.drools.common.DroolsAbstractConstraintStream

      `constraintFactory`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `DroolsExistsQuadConstraintStream​(DroolsConstraintFactory<Solution_> constraintFactory, DroolsAbstractQuadConstraintStream<Solution_,​A,​B,​C,​D> parent, boolean shouldExist, Class<E> otherClass, PentaJoiner<A,​B,​C,​D,​E>... joiners)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `QuadLeftHandSide<A,​B,​C,​D>` | `getLeftHandSide()` |
    `boolean` | `guaranteesDistinct()` | This method will return true if the constraint stream is guaranteed to only produce distinct tuples.
    `String` | `toString()` |

    - ### Methods inherited from class org.optaplanner.core.impl.score.stream.drools.quad.DroolsAbstractQuadConstraintStream

      `filter, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, ifExists, ifNotExists, impactScore, impactScore, impactScoreBigDecimal, impactScoreConfigurable, impactScoreConfigurable, impactScoreConfigurableBigDecimal, impactScoreConfigurableLong, impactScoreLong, map`

    - ### Methods inherited from class org.optaplanner.core.impl.score.stream.drools.common.DroolsAbstractConstraintStream

      `addChildStream, buildConstraint, buildConstraintConfigurable, getChildStreams, getConstraintFactory`

    - ### Methods inherited from class org.optaplanner.core.impl.score.stream.common.AbstractConstraintStream

      `buildConstraintWeightExtractor, buildConstraintWeightExtractor, impact, penalize, penalizeConfigurable, reward, rewardConfigurable`

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

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

    - ### Methods inherited from interface org.optaplanner.core.api.score.stream.ConstraintStream

      `getConstraintFactory, impact, impact, penalize, penalize, penalizeConfigurable, penalizeConfigurable, reward, reward, rewardConfigurable, rewardConfigurable`

    - ### Methods inherited from interface org.optaplanner.core.impl.score.stream.quad.InnerQuadConstraintStream

      `distinct, impact, impactBigDecimal, impactConfigurable, impactConfigurableBigDecimal, impactConfigurableLong, impactLong, penalize, penalizeBigDecimal, penalizeConfigurable, penalizeConfigurableBigDecimal, penalizeConfigurableLong, penalizeLong, reward, rewardBigDecimal, rewardConfigurable, rewardConfigurableBigDecimal, rewardConfigurableLong, rewardLong`

    - ### Methods inherited from interface org.optaplanner.core.api.score.stream.quad.QuadConstraintStream

      `ifExists, ifExists, ifExists, ifExists, ifNotExists, ifNotExists, ifNotExists, ifNotExists, impact, impactBigDecimal, impactConfigurable, impactConfigurableBigDecimal, impactConfigurableLong, impactLong, penalize, penalizeBigDecimal, penalizeConfigurable, penalizeConfigurableBigDecimal, penalizeConfigurableLong, penalizeLong, reward, rewardBigDecimal, rewardConfigurable, rewardConfigurableBigDecimal, rewardConfigurableLong, rewardLong`

- - ### Constructor Detail

    - #### DroolsExistsQuadConstraintStream

          public DroolsExistsQuadConstraintStream​(DroolsConstraintFactory<Solution_> constraintFactory,
                                                  DroolsAbstractQuadConstraintStream<Solution_,​A,​B,​C,​D> parent,
                                                  boolean shouldExist,
                                                  Class<E> otherClass,
                                                  PentaJoiner<A,​B,​C,​D,​E>... joiners)

  - ### Method Detail

    - #### guaranteesDistinct

          public boolean guaranteesDistinct()

      Description copied from interface: `InnerQuadConstraintStream`
      This method will return true if the constraint stream is guaranteed to only produce distinct tuples. See `InnerQuadConstraintStream.distinct()` for details.
      Returns:
        true if the guarantee of distinct tuples is provided

    - #### getLeftHandSide

          public QuadLeftHandSide<A,​B,​C,​D> getLeftHandSide()

      Specified by:
        `getLeftHandSide` in class `DroolsAbstractQuadConstraintStream<Solution_,​A,​B,​C,​D>`

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`