org.eclipse.incquery.runtime.matchers.planning.operations

Class PProject

java.lang.Object

org.eclipse.incquery.runtime.matchers.planning.operations.POperation

org.eclipse.incquery.runtime.matchers.planning.operations.PProject

public class PProject
extends POperation

Represents a projection of a single parent SubPlan onto a limited set of variables.

May optionally prescribe an ordering of variables (List, as opposed to Set).

Author:

Bergmann Gabor

Constructor Summary

Constructors

Constructor and Description
PProject(java.util.List<PVariable> toVariables)
PProject(java.util.Set<PVariable> toVariables)

Method Summary

Modifier and Type	Method and Description
void	checkConsistency(SubPlan subPlan) Checks whether this constraint can be properly applied at the given SubPlan.
boolean	equals(java.lang.Object obj)
java.util.Set<? extends PConstraint>	getDeltaConstraints() Newly enforced constraints
java.lang.String	getShortName()
java.util.Collection<PVariable>	getToVariables()
int	hashCode()
boolean	isOrdered()
int	numParentSubPlans()

Methods inherited from class org.eclipse.incquery.runtime.matchers.planning.operations.POperation

toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PProject

public PProject(java.util.Set<PVariable> toVariables)

PProject

public PProject(java.util.List<PVariable> toVariables)

Method Detail

getToVariables

public java.util.Collection<PVariable> getToVariables()

isOrdered

public boolean isOrdered()

getDeltaConstraints

public java.util.Set<? extends PConstraint> getDeltaConstraints()

Description copied from class: POperation

Newly enforced constraints

Specified by:

getDeltaConstraints in class POperation

numParentSubPlans

public int numParentSubPlans()

Specified by:

numParentSubPlans in class POperation

Returns:

the number of SubPlans that must be specified as parents

checkConsistency

public void checkConsistency(SubPlan subPlan)

Description copied from class: POperation

Checks whether this constraint can be properly applied at the given SubPlan.

Overrides:

checkConsistency in class POperation

getShortName

public java.lang.String getShortName()

Specified by:

getShortName in class POperation

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object