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org.exolab.adaptx.xpath.functions

Class LangFunctionCall

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, NUMBER, PATH_EXPR, PRIMARY, STEP, STRING, UNION_EXPR

Constructor Summary

LangFunctionCall()
Creates a new Lang FunctionCall

Method Summary

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 org.exolab.adaptx.xpath.expressions.FunctionCall

getFunctionName, getParameter, getParameterCount

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

getExprType, getType

Constructor Details

LangFunctionCall

public LangFunctionCall()
Creates a new Lang FunctionCall

Method Details

evaluate

public XPathResult evaluate(XPathContext context)
            throws XPathException
Evaluates the expression and returns the XPath result.
Specified by:
evaluate in interface XPathExpression
Parameters:
context - The XPathContext to use during evaluation.
Returns:
The XPathResult (not null).
Throws:
XPathException - if an error occured while evaluating this expression.

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