org.eclipse.incquery.runtime.matchers.psystem.basicenumerables

Class TypeConstraint

java.lang.Object

org.eclipse.incquery.runtime.matchers.psystem.BasePConstraint

org.eclipse.incquery.runtime.matchers.psystem.EnumerablePConstraint

org.eclipse.incquery.runtime.matchers.psystem.KeyedEnumerablePConstraint<IInputKey>

org.eclipse.incquery.runtime.matchers.psystem.basicenumerables.TypeConstraint

All Implemented Interfaces:

ITypeConstraint, ITypeInfoProviderConstraint, PConstraint

public class TypeConstraint
extends KeyedEnumerablePConstraint<IInputKey>
implements ITypeConstraint

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.

The InputKey must be enumerable!

Author:

Zoltan Ujhelyi

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.incquery.runtime.matchers.psystem.ITypeConstraint

ITypeConstraint.TypeConstraintUtil

Nested classes/interfaces inherited from interface org.eclipse.incquery.runtime.matchers.psystem.PConstraint

PConstraint.CompareByMonotonousID

Constructor Summary

Constructors

Constructor and Description
TypeConstraint(PBody pBody, Tuple variablesTuple, IInputKey inputKey)

Method Summary

Modifier and Type	Method and Description
TypeJudgement	getEquivalentJudgement()
java.util.Map<java.util.Set<PVariable>,java.util.Set<PVariable>>	getFunctionalDependencies(IQueryMetaContext context) A (preferably minimal) cover of known functional dependencies between variables.
java.util.Set<TypeJudgement>	getImpliedJudgements(IQueryMetaContext context) Returns type information implied by this constraint.

Methods inherited from class org.eclipse.incquery.runtime.matchers.psystem.KeyedEnumerablePConstraint

getSupplierKey

Methods inherited from class org.eclipse.incquery.runtime.matchers.psystem.EnumerablePConstraint

doReplaceVariable, getDeducedVariables, getVariableInTuple, getVariablesTuple

Methods inherited from class org.eclipse.incquery.runtime.matchers.psystem.BasePConstraint

checkSanity, delete, getAffectedVariables, getMonotonousID, getPSystem, replaceVariable, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.incquery.runtime.matchers.psystem.PConstraint

checkSanity, delete, getAffectedVariables, getDeducedVariables, getMonotonousID, replaceVariable

Constructor Detail

TypeConstraint

public TypeConstraint(PBody pBody,
                      Tuple variablesTuple,
                      IInputKey inputKey)

Method Detail

getEquivalentJudgement

public TypeJudgement getEquivalentJudgement()

Specified by:

getEquivalentJudgement in interface ITypeConstraint

getImpliedJudgements

public java.util.Set<TypeJudgement> getImpliedJudgements(IQueryMetaContext context)

Description copied from interface: ITypeInfoProviderConstraint

Returns type information implied by this constraint.

Specified by:

getImpliedJudgements in interface ITypeInfoProviderConstraint

getFunctionalDependencies

public java.util.Map<java.util.Set<PVariable>,java.util.Set<PVariable>> getFunctionalDependencies(IQueryMetaContext context)

Description copied from interface: PConstraint

A (preferably minimal) cover of known functional dependencies between variables.

Specified by:

getFunctionalDependencies in interface PConstraint

Overrides:

getFunctionalDependencies in class BasePConstraint

Returns:

non-trivial functional dependencies in the form of {variables} --> {variables}, where dependencies with the same lhs are unified.