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

- Interface Summary
  Interface | Description
  --- | ---
  InnerQuadConstraintStream<A,​B,​C,​D> |

- Class Summary
  Class | Description
  --- | ---
  AbstractQuadJoiner<A,​B,​C,​D> |
  CompositeQuadJoiner<A,​B,​C,​D> |
  DefaultQuadConstraintCollector<A,​B,​C,​D,​ResultContainer_,​Result_> |
  FilteringQuadJoiner<A,​B,​C,​D> |
  NoneQuadJoiner<A,​B,​C,​D> |
  SingleQuadJoiner<A,​B,​C,​D> |