org.exolab.adaptx.xpath.functions
Class StringLength

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.StringLength

All Implemented Interfaces:

Parameters, XPathExpression

public class StringLength

extends FunctionCallImpl

An implementation of the "string-length()" 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

StringLength()
Creates a new StringLength 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.PrimaryExpr

getExprType, getType

Methods inherited from class java.lang.Object

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

Constructor Detail

StringLength

public StringLength()

Creates a new StringLength 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.