Interface XPathVariableResolver
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public interface XPathVariableResolverXPathVariableResolverprovides access to the set of user defined XPath variables.The
XPathVariableResolverand 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 not change.- Since:
- 1.5
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method and Description ObjectresolveVariable(QName variableName)Find a variable in the set of available variables.
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Method Detail
resolveVariable
Object resolveVariable(QName variableName)
Find a variable in the set of available variables.
If
variableNameisnull, then aNullPointerExceptionis thrown.- Parameters:
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variableName- TheQNameof the variable name. - Returns:
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The variables value, or
nullif no variable namedvariableNameexists. The value returned must be of a type appropriate for the underlying object model. - Throws:
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NullPointerException- IfvariableNameisnull.
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