danbikel.parser.constraints
Class AbstractConstraint

java.lang.Object
  danbikel.parser.constraints.AbstractConstraint

All Implemented Interfaces:

Constraint

public class AbstractConstraint
extends Object
implements Constraint

A base class that throws an UnsupportedOperationException for every optional operation of the Constraint interface. Note that this class is not actually abstract in spite of its name, as it implements all the methods of the Constraint interface.

Constructor Summary

protected

AbstractConstraint() Constructs a new instance of this base class, typically called implicitly by concrete subclasses.

Method Summary

Constraint	getParent() Throws an UnsupportedOperationException.
boolean	hasBeenSatisfied() Throws an UnsupportedOperationException.
boolean	isLeaf() Throws an UnsupportedOperationException.
boolean	isLocallySatisfiedBy(Item item) Throws an UnsupportedOperationException.
boolean	isSatisfiedBy(Item item) Throws an UnsupportedOperationException.
boolean	isViolatedBy(Item item) Throws an UnsupportedOperationException.
boolean	isViolatedByChild(Item childItem) Throws an UnsupportedOperationException.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractConstraint

protected AbstractConstraint()

Constructs a new instance of this base class, typically called implicitly by concrete subclasses.

Method Detail

isLeaf

public boolean isLeaf()

Throws an UnsupportedOperationException.

Specified by:

isLeaf in interface Constraint

Returns:

true if this constraint is part of a tree structure of constraints and is a leaf.

See Also:

ConstraintSet.hasTreeStructure()

getParent

public Constraint getParent()

Throws an UnsupportedOperationException.

Specified by:

getParent in interface Constraint

Returns:

the parent of this constraint

See Also:

ConstraintSet.hasTreeStructure()

isSatisfiedBy

public boolean isSatisfiedBy(Item item)

Throws an UnsupportedOperationException.

Specified by:

isSatisfiedBy in interface Constraint

Parameters:

item - the item to test

Returns:

whether the specified item satisfies this constraint.

hasBeenSatisfied

public boolean hasBeenSatisfied()

Throws an UnsupportedOperationException.

Specified by:

hasBeenSatisfied in interface Constraint

Returns:

true if this constraint has been satisfied, false if it has not

isLocallySatisfiedBy

public boolean isLocallySatisfiedBy(Item item)

Throws an UnsupportedOperationException.

Specified by:

isLocallySatisfiedBy in interface Constraint

Returns:

whether the specified item satisfies the local information of this constraint node

isViolatedBy

public boolean isViolatedBy(Item item)

Throws an UnsupportedOperationException.

Specified by:

isViolatedBy in interface Constraint

Parameters:

item - the item to test

Returns:

whether the specified item violates this constraint.

isViolatedByChild

public boolean isViolatedByChild(Item childItem)

Throws an UnsupportedOperationException.

Specified by:

isViolatedByChild in interface Constraint

Parameters:

childItem - the child item to test

Returns:

true if the specified child item violates this constraint, false otherwise

See Also:

ConstraintSet.hasTreeStructure()