# Hierarchy For Package org.optaplanner.core.impl.score.stream.quad

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.optaplanner.core.impl.score.stream.common.AbstractJoiner
    - org.optaplanner.core.impl.score.stream.quad.AbstractQuadJoiner<A,​B,​C,​D> (implements org.optaplanner.core.api.score.stream.quad.QuadJoiner<A,​B,​C,​D>)
      - org.optaplanner.core.impl.score.stream.quad.CompositeQuadJoiner<A,​B,​C,​D>
      - org.optaplanner.core.impl.score.stream.quad.FilteringQuadJoiner<A,​B,​C,​D>
      - org.optaplanner.core.impl.score.stream.quad.NoneQuadJoiner<A,​B,​C,​D>
      - org.optaplanner.core.impl.score.stream.quad.SingleQuadJoiner<A,​B,​C,​D>
  - org.optaplanner.core.impl.score.stream.quad.DefaultQuadConstraintCollector<A,​B,​C,​D,​ResultContainer_,​Result_> (implements org.optaplanner.core.api.score.stream.quad.QuadConstraintCollector<A,​B,​C,​D,​ResultContainer_,​Result_>)

## Interface Hierarchy

- org.optaplanner.core.api.score.stream.ConstraintStream
  - org.optaplanner.core.api.score.stream.quad.QuadConstraintStream<A,​B,​C,​D>
    - org.optaplanner.core.impl.score.stream.quad.InnerQuadConstraintStream<A,​B,​C,​D>