# Package org.optaplanner.core.api.score.stream.tri

The `ConstraintStream` API for tri-tuples.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  TriConstraintCollector<A,B,C,ResultContainer_,Result_> | Usually created with `ConstraintCollectors`.
  TriConstraintStream<A,B,C> | A `ConstraintStream` that matches three facts.
  TriJoiner<A,B,C> | Created with `Joiners`.

## Package org.optaplanner.core.api.score.stream.tri Description

The `ConstraintStream` API for tri-tuples.

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