edu.washington.cs.knowitall.rule.constraint
Class PatternConstraint

java.lang.Object
  edu.washington.cs.knowitall.rule.constraint.Constraint
      edu.washington.cs.knowitall.rule.constraint.CaptureConstraint
          edu.washington.cs.knowitall.rule.constraint.AbstractPatternConstraint
              edu.washington.cs.knowitall.rule.constraint.PatternConstraint

Direct Known Subclasses:

SequenceConstraint

public class PatternConstraint
extends AbstractPatternConstraint

Constrains based on the supplied token-based pattern.

Author:

schmmd

Field Summary

Fields inherited from class edu.washington.cs.knowitall.rule.constraint.AbstractPatternConstraint

expression

Fields inherited from class edu.washington.cs.knowitall.rule.constraint.Constraint

part

Constructor Summary

	PatternConstraint(org.jdom.Element e)
protected	PatternConstraint(org.jdom.Element e, ExtractionPart part)
	PatternConstraint(ExtractionPart part, String pattern)

Method Summary

boolean	equals(Object other) Force subclasses to avoid pointer-based comparison.
List<Constraint>	generalize() Creates a list of constraints with constraint size reduced by exactly one.
int	size() The size of a constraint is the count of subconstraints.
org.jdom.Element	toXmlElement()

Methods inherited from class edu.washington.cs.knowitall.rule.constraint.AbstractPatternConstraint

check, deserializePattern, getString, value

Methods inherited from class edu.washington.cs.knowitall.rule.constraint.CaptureConstraint

value

Methods inherited from class edu.washington.cs.knowitall.rule.constraint.Constraint

check, create, create, create, fromXmlElement, getConstraintClass, hashCode, simplify, subsumes, toString, toString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PatternConstraint

public PatternConstraint(org.jdom.Element e)

PatternConstraint

protected PatternConstraint(org.jdom.Element e,
                            ExtractionPart part)

PatternConstraint

public PatternConstraint(ExtractionPart part,
                         String pattern)

Method Detail

equals

public boolean equals(Object other)

Description copied from class: Constraint

Force subclasses to avoid pointer-based comparison.

Overrides:

equals in class AbstractPatternConstraint

toXmlElement

public org.jdom.Element toXmlElement()

Overrides:

toXmlElement in class Constraint

generalize

public List<Constraint> generalize()

Description copied from class: Constraint

Creates a list of constraints with constraint size reduced by exactly one.

Specified by:

generalize in class Constraint

Returns:

size

public int size()

Description copied from class: Constraint

The size of a constraint is the count of subconstraints. Most constraints will have a size of one. However TermConstraint for example has a size equal to the number of restrictions it has.

Specified by:

size in class Constraint

Returns: