2005/5/9

org::w3c::dom::xpath::XPathExpression Class Reference

Inheritance diagram for org::w3c::dom::xpath::XPathExpression:

Member Function Documentation

virtual acdk::lang::Object org::w3c::dom::xpath::XPathExpression::evaluate (  IN(RNode)  contextNode, short  type, IN(acdk::lang::Object)  result )  throw ( RXPathException , RDOMException ) [pure virtual]

Evaluates this XPath expression and returns a result. Parameters: contextNode  The context is context node for the evaluation of this XPath expression.If the XPathEvaluator was obtained by casting the Document then this must be owned by the same document and must be a Document, Element, Attribute, Text, CDATASection, Comment, ProcessingInstruction, or XPathNamespace node.If the context node is a Text or 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 type is 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 type codes of XPathResult. result  The result specifies 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 XPathResult. Returns: The result of the evaluation of the XPath expression.For XPath 1.0 results, this object will be of type XPathResult. Exceptions: XPathException  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 XPathEvaluator that created this XPathExpression NOT_SUPPORTED_ERR: The Node is not a type permitted as an XPath context node or the request type is not permitted by this XPathExpression.