KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > openlaszlo > iv > flash > xml > jaxen > XPathProcessorImpl


1 /*
2  * $Id: XPathProcessorImpl.java,v 1.2 2002/06/06 15:02:07 valis Exp $
3  *
4  * ===========================================================================
5  *
6  * The JGenerator Software License, Version 1.0
7  *
8  * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if
22  * any, must include the following acknowlegement:
23  * "This product includes software developed by Dmitry Skavish
24  * (skavish@usa.net, http://www.flashgap.com/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The name "The JGenerator" must not be used to endorse or promote
29  * products derived from this software without prior written permission.
30  * For written permission, please contact skavish@usa.net.
31  *
32  * 5. Products derived from this software may not be called "The JGenerator"
33  * nor may "The JGenerator" appear in their names without prior written
34  * permission of Dmitry Skavish.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
40  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  *
49  */
50
51 package org.openlaszlo.iv.flash.xml.jaxen;
52
53 import org.openlaszlo.iv.flash.xml.XPathProcessor;
54 import java.util.Iterator JavaDoc;
55 import javax.xml.transform.TransformerException JavaDoc;
56 import org.jaxen.JaxenException;
57 import org.jaxen.dom.DOMXPath;
58 import org.w3c.dom.Node JavaDoc;
59
60
61 /**
62  * Jaxen XPath processor
63  * <P>
64  * Provides various methods for XPath processing
65  *
66  * @author Andrew Wason
67  */
68 public class XPathProcessorImpl implements XPathProcessor {
69
70     /**
71      * Evaluates XPath to list of nodes.
72      *
73      * @param path XPath expression
74      * @param node xml node to evaluated on
75      * @return result of xpath execution - Iterator on nodes
76      * @exception TransformerException
77      */
78     public Iterator JavaDoc selectNodeList(String JavaDoc path, Node JavaDoc node) throws TransformerException JavaDoc {
79         try {
80             DOMXPath xpath = new DOMXPath(path);
81             return xpath.selectNodes(node).iterator();
82         } catch (JaxenException e) {
83             throw new TransformerException JavaDoc(e);
84         }
85     }
86
87     /**
88      * Evaluates XPath to one node.
89      *
90      * @param path XPath expression
91      * @param node xml node to be evaluated on
92      * @return xml node
93      * @exception TransformerException
94      */
95     public Node JavaDoc selectSingleNode(String JavaDoc path, Node JavaDoc node) throws TransformerException JavaDoc {
96         try {
97             DOMXPath xpath = new DOMXPath(path);
98             return (Node JavaDoc)xpath.selectSingleNode(node);
99         } catch (JaxenException e) {
100             throw new TransformerException JavaDoc((Throwable JavaDoc)e);
101         }
102     }
103 }
104
Popular Tags