Por favor, lembre-se que esta tradução da especificação é resultado de um projeto da comunidade java.net( https://jdk5-api-pt-br.dev.java.net/). A versão oficial da especificação é a versão na língua inglesa que pode ser encontrada em http://java.sun.com/j2se/1.5.0/docs/api/. Em caso de divergências, a versão predominante da especificação é a original em inglês.

Please note that this translation of the specification is the result of a java.net community project ( https://jdk5-api-pt-br.dev.java.net/ ). The official version of the specification is the US English language version which can be found at http://java.sun.com/j2se/1.5.0/docs/api/. In case of disputes, the authoritative version of the specification is the original, English document.

javax.xml.xpath
Interface XPathFunction

public interface XPathFunction

XPathFunction provides access to XPath functions.

Functions are identified by QName and arity in XPath.

Since:

1.5

Method Summary

Object

evaluate(List args) Evaluate the function with the specified arguments.

Method Detail

evaluate

Object evaluate(List args)
                throws XPathFunctionException

Evaluate the function with the specified arguments.

To the greatest extent possible, side-effects should be avoided in the definition of extension functions. The implementation evaluating an XPath expression is under no obligation to call extension functions in any particular order or any particular number of times.

Parameters:

args - The arguments, null is a valid value.

Returns:

The result of evaluating the XPath function as an Object.

Throws:

XPathFunctionException - If args cannot be evaluated with this XPath function.