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 XPathVariableResolver

public interface XPathVariableResolver

XPathVariableResolver provides access to the set of user defined XPath variables.

The XPathVariableResolver and the XPath evaluator must adhere to a contract that cannot be directly enforced by the API. Although variables may be mutable, that is, an application may wish to evaluate the same XPath expression more than once with different variable values, in the course of evaluating any single XPath expression, a variable's value must be immutable.

Since:

1.5

Method Summary

Object

resolveVariable(QName variableName) Find a variable in the set of available variables.

Method Detail

resolveVariable

Object resolveVariable(QName variableName)

Find a variable in the set of available variables.

If variableName is null, then a NullPointerException is thrown.

Parameters:

variableName - The QName of the variable name.

Returns:

The variables value, or null if no variable named variableName exists. The value returned must be of a type appropriate for the underlying object model.

Throws:

NullPointerException - If variableName is null.