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 /*
  * Copyright (c) 2004 World Wide Web Consortium,
  *
  * (Massachusetts Institute of Technology, European Research Consortium for
  * Informatics and Mathematics, Keio University). All Rights Reserved. This
  * work is distributed under the W3C(r) Software License [1] in the hope that
  * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  *
 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
 */
package org.w3c.dom.xpath;
The XPathExpression interface represents a parsed and resolved XPath expression.

See also the Document Object Model (DOM) Level 3 XPath Specification.

public interface XPathExpression {
    
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.
Throws:
XPathException TYPE_ERR: Raised if the result cannot be converted to return the specified type.
org.w3c.dom.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.
    public Object evaluate(Node contextNode
                           short type
                           Object result)
                           throws XPathExceptionDOMException;
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