net.sf.practicalxml.xpath.function

Class XsiBoolean

java.lang.Object

net.sf.practicalxml.xpath.FunctionResolver.AbstractSelfDescribingFunction

net.sf.practicalxml.xpath.AbstractStringFunction

net.sf.practicalxml.xpath.function.XsiBoolean

All Implemented Interfaces:

Comparable<FunctionResolver.SelfDescribingFunction>, XPathFunction, FunctionResolver.SelfDescribingFunction

public class XsiBoolean
extends AbstractStringFunction

Converts its argument to a boolean value, using a modification of the rules for Schema instances: true is represented by the literal values "true" or 1, ignoring case, while false is everything else. This is very different from the XPath function boolean(), in which any non-zero value or non-empty string/nodeset is true.

Note: the name of this class is XsiBoolean, but it's name in an XPath expression is "boolean". This is to prevent name collision with java.lang.Boolean.

Constructor Summary

Constructors

Constructor and Description
XsiBoolean()

Method Summary

Methods

Modifier and Type	Method and Description
Object	evaluate(String value, List<?> args) Subclasses must implement this method.

Methods inherited from class net.sf.practicalxml.xpath.AbstractStringFunction

convertToString, evaluate

Methods inherited from class net.sf.practicalxml.xpath.FunctionResolver.AbstractSelfDescribingFunction

compareTo, equals, getMaxArgCount, getMinArgCount, getName, getNamespaceUri, getQName, hashCode, isArityMatch, isMatch

Methods inherited from class java.lang.Object

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

Constructor Detail

XsiBoolean

public XsiBoolean()

Method Detail

evaluate

public Object evaluate(String value,
              List<?> args)

Description copied from class: AbstractStringFunction

Subclasses must implement this method. It is passed the first argument already converted to a string, as well as the original list of arguments.

Specified by:

evaluate in class AbstractStringFunction