Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This

interface
defines a single method to return the Object value
of a variable identified by a qualified name. The value of a named
variable is allowed to change between XPath evaluations, but
implementations of this interface must ensure that no variable
changes

during the evaluation of an expression.
Objects that implement this interface may be passed to the
setXPathVariableResolver( ) methods of
XPath or XPathFactory.

public interface

XPathVariableResolver {
// Public Instance Methods
Object

resolveVariable (javax.xml.namespace.QName

variableName );
}

Passed To

XPath.setXPathVariableResolver( ),
XPathFactory.setXPathVariableResolver( )

Returned By

XPath.getXPathVariableResolver( )