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

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

Direct Known Subclasses:

RegexConstraint, StringConstraint

public abstract class AbstractRegexConstraint
extends CaptureConstraint

Field Summary

protected Pattern	pattern
edu.washington.cs.knowitall.commonlib.ArraySet<String>	terms

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

part

Constructor Summary

AbstractRegexConstraint(org.jdom.Element e)

AbstractRegexConstraint(ExtractionPart part, List<String> terms)

AbstractRegexConstraint(ExtractionPart part, String term)

Method Summary

protected Boolean	check(TokenSequence extraction)
boolean	equals(Object other) Force subclasses to avoid pointer-based comparison.
protected int	flags()
List<Constraint>	generalize() Creates a list of constraints with constraint size reduced by exactly one.
protected String	getString(TokenSequence extraction)
int	hashCode() Force subclasses to avoid pointer-based comparison.
int	size() The size of a constraint is the count of subconstraints.
String	toString() Provides a base constraint representation.
org.jdom.Element	toXmlElement()
protected abstract String	transform(String term)
protected String	value(TokenSequence extraction)

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, simplify, subsumes, toString, toString

Methods inherited from class java.lang.Object

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

Field Detail

pattern

protected final Pattern pattern

terms

public edu.washington.cs.knowitall.commonlib.ArraySet<String> terms

Constructor Detail

AbstractRegexConstraint

public AbstractRegexConstraint(org.jdom.Element e)

AbstractRegexConstraint

public AbstractRegexConstraint(ExtractionPart part,
                               String term)

AbstractRegexConstraint

public AbstractRegexConstraint(ExtractionPart part,
                               List<String> terms)

Method Detail

toString

public String toString()

Description copied from class: Constraint

Provides a base constraint representation. Constraint(part=LEFT)

Overrides:

toString in class Constraint

equals

public boolean equals(Object other)

Description copied from class: Constraint

Force subclasses to avoid pointer-based comparison.

Overrides:

equals in class Constraint

hashCode

public int hashCode()

Description copied from class: Constraint

Force subclasses to avoid pointer-based comparison.

Overrides:

hashCode in class Constraint

flags

protected int flags()

transform

protected abstract String transform(String term)

check

protected Boolean check(TokenSequence extraction)

Specified by:

check in class Constraint

Returns:

true if the constraint passes

value

protected String value(TokenSequence extraction)

Specified by:

value in class CaptureConstraint

Returns:

the matching string, or null

getString

protected String getString(TokenSequence extraction)

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:

toXmlElement

public org.jdom.Element toXmlElement()

Overrides:

toXmlElement in class Constraint