gate.jape.constraint
Class AbstractRegExpPredicate

java.lang.Object
  gate.jape.constraint.AbstractConstraintPredicate
      gate.jape.constraint.AbstractRegExpPredicate

All Implemented Interfaces:

ConstraintPredicate, Serializable

Direct Known Subclasses:

NotRegExpFindPredicate, NotRegExpMatchPredicate, RegExpFindPredicate, RegExpMatchPredicate

public abstract class AbstractRegExpPredicate
extends AbstractConstraintPredicate

Abstract regular expression based predicate implementation. This class handles parsing of the regexp into a Pattern object, and at match time it creates a Matcher for the annotation value. Concrete subclasses define the different criteria for what counts as a "match" in terms of Matcher.find() and Matcher.matches().

See Also:

Serialized Form

Field Summary

Fields inherited from class gate.jape.constraint.AbstractConstraintPredicate

accessor, value

Fields inherited from interface gate.jape.constraint.ConstraintPredicate

EQUAL, GREATER, GREATER_OR_EQUAL, LESSER, LESSER_OR_EQUAL, NOT_EQUAL, NOT_REGEXP_FIND, NOT_REGEXP_MATCH, REGEXP_FIND, REGEXP_MATCH

Constructor Summary

AbstractRegExpPredicate()

Method Summary

boolean	doMatch(Object annotValue, AnnotationSet context) Returns true if the given value matches the set pattern.
protected abstract boolean	matcherResult(Matcher m) Must be implemented by subclasses to define the matching logic, typically one of Matcher.find() and Matcher.matches(), possibly negated.
void	setValue(Object value) Set the value used in comparisons against passed in data in ConstraintPredicate.matches(Annotation, AnnotationSet).
String	toString()

Methods inherited from class gate.jape.constraint.AbstractConstraintPredicate

equals, getAccessor, getValue, hashCode, matches, setAccessor

Methods inherited from class java.lang.Object

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

Methods inherited from interface gate.jape.constraint.ConstraintPredicate

getOperator

Constructor Detail

AbstractRegExpPredicate

public AbstractRegExpPredicate()

Method Detail

toString

public String toString()

Overrides:

toString in class AbstractConstraintPredicate

setValue

public void setValue(Object value)

Description copied from interface: ConstraintPredicate

Set the value used in comparisons against passed in data in ConstraintPredicate.matches(Annotation, AnnotationSet).

Specified by:

setValue in interface ConstraintPredicate

Overrides:

setValue in class AbstractConstraintPredicate

doMatch

public boolean doMatch(Object annotValue,
                       AnnotationSet context)
                throws JapeException

Returns true if the given value matches the set pattern. If the value is null it is treated as an empty string. The actual matching logic is defined by matcherResult(java.util.regex.Matcher).

Specified by:

doMatch in class AbstractConstraintPredicate

Throws:

JapeException

matcherResult

protected abstract boolean matcherResult(Matcher m)

Must be implemented by subclasses to define the matching logic, typically one of Matcher.find() and Matcher.matches(), possibly negated.

Parameters:

m - a Matcher for the annotation value string, obtained from the constraint pattern.

Returns:

true if this constraint should be considered to match, false otherwise.