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

The `ConstraintStream` API for uni-tuples.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  UniConstraintCollector<A,ResultContainer_,Result_> | Usually created with `ConstraintCollectors`.
  UniConstraintStream<A> | A `ConstraintStream` that matches one fact.

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

The `ConstraintStream` API for uni-tuples.

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