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added in API level 8


public interface XPathFunction


XPathFunction provides access to XPath functions.

Functions are identified by QName and arity in XPath.


Public methods

abstract Object evaluate(List args)

Evaluate the function with the specified arguments.

Public methods


added in API level 8
Object evaluate (List args)

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.

args List: The arguments, null is a valid value.
Object The result of evaluating the XPath function as an Object.
XPathFunctionException If args cannot be evaluated with this XPath function.
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