Package org.exolab.adaptx.xpath.functions

Class LangFunctionCall

java.lang.Object

org.exolab.adaptx.xpath.expressions.PrimaryExpr

org.exolab.adaptx.xpath.expressions.FunctionCall

org.exolab.adaptx.xpath.functions.FunctionCallImpl

org.exolab.adaptx.xpath.functions.LangFunctionCall

All Implemented Interfaces:

Parameters, XPathExpression

public class LangFunctionCall
extends FunctionCallImpl

A implementation of the XPath "lang" function call

Version:

$Revision: 3736 $ $Date: 2003-05-13 09:57:04 +0200 (Tue, 13 May 2003) $

Author:

Keith Visco

Field Summary

Fields inherited from class org.exolab.adaptx.xpath.functions.FunctionCallImpl

INVALID_NUMBER_PARAMS, INVALID_RESULT

Fields inherited from class org.exolab.adaptx.xpath.expressions.PrimaryExpr

EXPR, FUNCTION_CALL, LITERAL, NUMBER, VARIABLE_REFERENCE

Fields inherited from interface org.exolab.adaptx.xpath.XPathExpression

BOOLEAN, ERROR, FILTER_EXPR, LOCATION_PATH, NODE_TEST, PATH_EXPR, PRIMARY, STEP, STRING, UNION_EXPR

Constructor Summary

Constructors

Constructor	Description
LangFunctionCall()	Creates a new Lang FunctionCall

Method Summary

Modifier and Type	Method	Description
XPathResult	evaluate(XPathContext context)	Evaluates the expression and returns the XPath result.

Methods inherited from class org.exolab.adaptx.xpath.functions.FunctionCallImpl

addParameter, getFunctionName, getParameter, getParameterCount, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from class org.exolab.adaptx.xpath.expressions.PrimaryExpr

getExprType, getType

Constructor Detail

LangFunctionCall

public LangFunctionCall()

Creates a new Lang FunctionCall

Method Detail

evaluate

public XPathResult evaluate(XPathContext context)
                     throws XPathException

Evaluates the expression and returns the XPath result.

Parameters:

context - The XPathContext to use during evaluation.

Returns:

The XPathResult (not null).

Throws:

XPathException - if an error occured while evaluating this expression.