org.eclipse.incquery.runtime.matchers.psystem.basicdeferred

Class Inequality

java.lang.Object

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

org.eclipse.incquery.runtime.matchers.psystem.DeferredPConstraint

org.eclipse.incquery.runtime.matchers.psystem.VariableDeferredPConstraint

org.eclipse.incquery.runtime.matchers.psystem.basicdeferred.Inequality

All Implemented Interfaces:

PConstraint

public class Inequality
extends VariableDeferredPConstraint

Author:

Gabor Bergmann

Nested Class Summary

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

PConstraint.CompareByMonotonousID

Constructor Summary

Constructors

Constructor and Description
Inequality(PBody pBody, PVariable who, PVariable withWhom)
Inequality(PBody pBody, PVariable who, PVariable withWhom, boolean weak)

Method Summary

Modifier and Type	Method and Description
void	doReplaceVariable(PVariable obsolete, PVariable replacement)
void	eliminateWeak() Eliminates a weak inequality constraint if it can be ignored when who is the same as withWhom, or if any if them is undeducible.
java.util.Set<PVariable>	getDeducedVariables() The set of variables whose potential values can be enumerated (once all non-deduced variables have known values).
java.util.Set<PVariable>	getDeferringVariables()
PVariable	getWho()
PVariable	getWithWhom()
boolean	isEliminable() A weak inequality constraint is eliminable if who is the same as withWhom, or if any if them is undeducible.
boolean	isWeak() The inequality constraint is weak if it can be ignored when who is the same as withWhom, or if any if them is undeducible.

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

isReadyAt

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Inequality

public Inequality(PBody pBody,
                  PVariable who,
                  PVariable withWhom)

Inequality

public Inequality(PBody pBody,
                  PVariable who,
                  PVariable withWhom,
                  boolean weak)

Method Detail

getDeferringVariables

public java.util.Set<PVariable> getDeferringVariables()

Specified by:

getDeferringVariables in class VariableDeferredPConstraint

doReplaceVariable

public void doReplaceVariable(PVariable obsolete,
                              PVariable replacement)

getDeducedVariables

public java.util.Set<PVariable> getDeducedVariables()

Description copied from interface: PConstraint

The set of variables whose potential values can be enumerated (once all non-deduced variables have known values).

isWeak

public boolean isWeak()

The inequality constraint is weak if it can be ignored when who is the same as withWhom, or if any if them is undeducible.

Returns:

the weak

isEliminable

public boolean isEliminable()

A weak inequality constraint is eliminable if who is the same as withWhom, or if any if them is undeducible.

eliminateWeak

public void eliminateWeak()

Eliminates a weak inequality constraint if it can be ignored when who is the same as withWhom, or if any if them is undeducible.

getWho

public PVariable getWho()

getWithWhom

public PVariable getWithWhom()