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

## Class DroolsExistsUniConstraintStream<Solution_,​A>

- 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.uni.DroolsAbstractUniConstraintStream<Solution_,​A>
      - - org.optaplanner.core.impl.score.stream.drools.uni.DroolsExistsUniConstraintStream<Solution_,​A>

- All Implemented Interfaces:
    `ConstraintStream`, `UniConstraintStream<A>`, `InnerUniConstraintStream<A>`

      public final class DroolsExistsUniConstraintStream<Solution_,​A>
      extends DroolsAbstractUniConstraintStream<Solution_,​A>

- - ### Field Summary

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

      `constraintFactory`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `DroolsExistsUniConstraintStream​(DroolsConstraintFactory<Solution_> constraintFactory, DroolsAbstractUniConstraintStream<Solution_,​A> parent, boolean shouldExist, Class<B> otherClass, BiJoiner<A,​B>... joiners)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `UniLeftHandSide<A>` | `getLeftHandSide()` |
    `String` | `toString()` |

    - ### Methods inherited from class org.optaplanner.core.impl.score.stream.drools.uni.DroolsAbstractUniConstraintStream

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

    - ### 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.uni.InnerUniConstraintStream

      `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.uni.UniConstraintStream

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

- - ### Constructor Detail

    - #### DroolsExistsUniConstraintStream

          public DroolsExistsUniConstraintStream​(DroolsConstraintFactory<Solution_> constraintFactory,
                                                 DroolsAbstractUniConstraintStream<Solution_,​A> parent,
                                                 boolean shouldExist,
                                                 Class<B> otherClass,
                                                 BiJoiner<A,​B>... joiners)

  - ### Method Detail

    - #### getLeftHandSide

          public UniLeftHandSide<A> getLeftHandSide()

      Specified by:
        `getLeftHandSide` in class `DroolsAbstractUniConstraintStream<Solution_,​A>`

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`