Interface XPathFunction
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public interface XPathFunctionXPathFunctionprovides access to XPath functions.Functions are identified by QName and arity in XPath.
- Since:
- 1.5
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method and Description Objectevaluate(List args)Evaluate the function with the specified arguments.
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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:
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args- The arguments,nullis a valid value. - Returns:
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The result of evaluating the
XPathfunction as anObject. - Throws:
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XPathFunctionException- Ifargscannot be evaluated with thisXPathfunction.
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