com.novell.xml.xpath.functions
Class xpathSum

java.lang.Object
  com.novell.xml.xpath.Function
      com.novell.xml.xpath.functions.xpathSum

public class xpathSum

extends Function

This class implements the XPath sum(node-set) built-in function

Constructor Summary

xpathSum()
Construct an object for the sum() function

Method Summary

ExpressionValue	invoke(Object[] args) Perform sum() function
String	toString() Return function name.

Methods inherited from class com.novell.xml.xpath.Function

getInstance, getSignature, isConstant, registerForReset

Methods inherited from class java.lang.Object

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

Constructor Detail

xpathSum

public xpathSum()

Construct an object for the sum() function

Method Detail

invoke

public ExpressionValue invoke(Object[] args)
                       throws XPathEvaluationException

Perform sum() function

Overrides:

invoke in class Function

Parameters:

args - List of arguments. One argument of type nodeset

Returns:

The sum of all nodes in the node set, treated as numbers

Throws:

XPathEvaluationException

toString

public String toString()

Return function name.

Returns:

Function name.