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96 lines
3.4 KiB
96 lines
3.4 KiB
/*
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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/*
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*
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*
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*
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*
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*
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* Copyright (c) 2002 World Wide Web Consortium,
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* (Massachusetts Institute of Technology, Institut National de
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* Recherche en Informatique et en Automatique, Keio University). All
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* Rights Reserved. This program is distributed under the W3C's Software
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* Intellectual Property License. This program is distributed in the
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* hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE.
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* See W3C License http://www.w3.org/Consortium/Legal/ for more details.
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*/
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package org.w3c.dom.xpath;
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import org.w3c.dom.Node;
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import org.w3c.dom.DOMException;
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/**
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* The <code>XPathExpression</code> interface represents a parsed and resolved
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* XPath expression.
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* <p>See also the <a href='http://www.w3.org/2002/08/WD-DOM-Level-3-XPath-20020820'>Document Object Model (DOM) Level 3 XPath Specification</a>.
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*/
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public interface XPathExpression {
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/**
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* Evaluates this XPath expression and returns a result.
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* @param contextNode The <code>context</code> is context node for the
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* evaluation of this XPath expression.If the XPathEvaluator was
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* obtained by casting the <code>Document</code> then this must be
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* owned by the same document and must be a <code>Document</code>,
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* <code>Element</code>, <code>Attribute</code>, <code>Text</code>,
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* <code>CDATASection</code>, <code>Comment</code>,
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* <code>ProcessingInstruction</code>, or <code>XPathNamespace</code>
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* node.If the context node is a <code>Text</code> or a
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* <code>CDATASection</code>, then the context is interpreted as the
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* whole logical text node as seen by XPath, unless the node is empty
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* in which case it may not serve as the XPath context.
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* @param type If a specific <code>type</code> is specified, then the
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* result will be coerced to return the specified type relying on
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* XPath conversions and fail if the desired coercion is not possible.
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* This must be one of the type codes of <code>XPathResult</code>.
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* @param result The <code>result</code> specifies a specific result
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* object which may be reused and returned by this method. If this is
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* specified as <code>null</code>or the implementation does not reuse
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* the specified result, a new result object will be constructed and
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* returned.For XPath 1.0 results, this object will be of type
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* <code>XPathResult</code>.
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* @return The result of the evaluation of the XPath expression.For XPath
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* 1.0 results, this object will be of type <code>XPathResult</code>.
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* @exception XPathException
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* TYPE_ERR: Raised if the result cannot be converted to return the
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* specified type.
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* @exception DOMException
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* WRONG_DOCUMENT_ERR: The Node is from a document that is not supported
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* by the XPathEvaluator that created this <code>XPathExpression</code>
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* .
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* <br>NOT_SUPPORTED_ERR: The Node is not a type permitted as an XPath
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* context node or the request type is not permitted by this
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* <code>XPathExpression</code>.
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*/
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public Object evaluate(Node contextNode,
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short type,
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Object result)
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throws XPathException, DOMException;
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}
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