@DOMNameAttribute(name="evaluate") IXPathResult evaluate(Node contextNode, int type, Object result)
Evaluates this XPath expression and returns a result.
contextis context node for the evaluation of this XPath expression. If the
IXPathEvaluatorwas obtained by casting the
Documentthen this must be owned by the same document and must be a
XPathNamespacenode. If the context node is a
CDATASection, then the context is interpreted as the whole logical text node as seen by XPath, unless the node is empty in which case it may not serve as the XPath context.
type- If a specific
typeis specified, then the result will be coerced to return the specified type relying on XPath conversions and fail if the desired coercion is not possible. This must be one of the values of
resultspecifies a specific result object which may be reused and returned by this method. If this is specified as
nullor the implementation does not reuse the specified result, a new result object will be constructed and returned. For XPath 1.0 results, this object will be of type
DOMException- TYPE_ERR: Raised if the result cannot be converted to return the specified type.
DOMException- WRONG_DOCUMENT_ERR: The Node is from a document that is not supported by the
IXPathEvaluatorthat created this
DOMException- NOT_SUPPORTED_ERR: The Node is not a type permitted as an XPath context node or the request type is not permitted by this