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

Package Hierarchies:

- All Packages

## Interface Hierarchy

- org.optaplanner.core.api.score.stream.ConstraintStream
  - org.optaplanner.core.api.score.stream.quad.QuadConstraintStream<A,​B,​C,​D>
- org.optaplanner.core.api.score.stream.quad.QuadConstraintCollector<A,​B,​C,​D,​ResultContainer_,​Result_>
- org.optaplanner.core.api.score.stream.quad.QuadJoiner<A,​B,​C,​D>