net.sf.saxon.functions

Class Matches

java.lang.Object

net.sf.saxon.om.AbstractItem

net.sf.saxon.functions.AbstractFunction

net.sf.saxon.functions.SystemFunction

net.sf.saxon.functions.RegexFunction

net.sf.saxon.functions.Matches

All Implemented Interfaces:

Callable, StatefulSystemFunction, Function, GroundedValue, Item, Sequence

public class Matches
extends RegexFunction

This class implements the 3-argument matches() function for regular expression matching

Constructor Summary

Constructors

Constructor and Description
Matches()

Method Summary

Modifier and Type	Method and Description
protected boolean	allowRegexMatchingEmptyString()
BooleanValue	call(XPathContext context, Sequence[] arguments) Evaluate the expression
boolean	evalMatches(AtomicValue input, AtomicValue regex, java.lang.CharSequence flags, XPathContext context) Interface used by compiled bytecode
java.lang.String	getCompilerName() Get the (local) name of a class that can be used to generate bytecode for this system function

Methods inherited from class net.sf.saxon.functions.RegexFunction

copy, getRegularExpression, getStaticRegex, makeFunctionCall, makeOptimizedFunctionCall

Methods inherited from class net.sf.saxon.functions.SystemFunction

dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, exportAttributes, fixArguments, getArity, getCardinality, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getIntegerBounds, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getSpecialProperties, getStaticBaseUriString, getStreamerName, importAttributes, isTrustedResultType, makeCall, makeFunction, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, supplyTypeInformation, typeCheckCaller

Methods inherited from class net.sf.saxon.functions.AbstractFunction

atomize, deepEquals, effectiveBooleanValue, getAnnotations, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, typeCheck

Methods inherited from class net.sf.saxon.om.AbstractItem

getLength, head, isStreamed, itemAt, iterate, reduce, subsequence

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.saxon.om.Function

iterate

Methods inherited from interface net.sf.saxon.om.Item

head

Methods inherited from interface net.sf.saxon.om.GroundedValue

getLength, head, itemAt, reduce, subsequence

Constructor Detail

Matches

public Matches()

Method Detail

allowRegexMatchingEmptyString

protected boolean allowRegexMatchingEmptyString()

Specified by:

allowRegexMatchingEmptyString in class RegexFunction

evalMatches

public boolean evalMatches(AtomicValue input,
                           AtomicValue regex,
                           java.lang.CharSequence flags,
                           XPathContext context)
                    throws XPathException

Interface used by compiled bytecode

Parameters:

input - the value to be tested

regex - the regular expression

flags - the flags

context - the dynamic context

Returns:

true if the string matches the regex

Throws:

XPathException - if a dynamic error occurs

call

public BooleanValue call(XPathContext context,
                         Sequence[] arguments)
                  throws XPathException

Evaluate the expression

Parameters:

context - the dynamic evaluation context

arguments - the values of the arguments, supplied as Sequences

Returns:

the result of the evaluation, in the form of a Sequence

Throws:

XPathException - if a dynamic error occurs during the evaluation of the expression

getCompilerName

public java.lang.String getCompilerName()

Description copied from class: SystemFunction

Get the (local) name of a class that can be used to generate bytecode for this system function

Overrides:

getCompilerName in class SystemFunction

Returns:

the name of a bytecode generation class, or null if there is no bytecode support for this function