# Package org.eclipse.viatra.query.runtime.matchers.psystem.basicenumerables

- Class Summary
  Class | Description
  --- | ---
  AbstractTransitiveClosure |
  BinaryReflexiveTransitiveClosure | For a binary base pattern over an enumerable universe type, computes the reflexive transitive closure (base)*
  BinaryTransitiveClosure | For a binary base pattern, computes the irreflexive transitive closure (base)+
  ConstantValue |
  PositivePatternCall |
  TypeConstraint | Represents an enumerable type constraint that asserts that values substituted for the given tuple of variables form a tuple that belongs to an enumerable extensional relation identified by an `IInputKey`.