OracleV2DOMAdapter


1   /*-- 
2   
3    $Id: OracleV2DOMAdapter.java,v 1.18 2004/02/06 09:28:31 jhunter Exp $
4   
5    Copyright (C) 2000-2004 Jason Hunter & Brett McLaughlin.
6    All rights reserved.
7    
8    Redistribution and use in source and binary forms, with or without
9    modification, are permitted provided that the following conditions
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12   1. Redistributions of source code must retain the above copyright
13      notice, this list of conditions, and the following disclaimer.
14   
15   2. Redistributions in binary form must reproduce the above copyright
16      notice, this list of conditions, and the disclaimer that follows 
17      these conditions in the documentation and/or other materials 
18      provided with the distribution.
19  
20   3. The name "JDOM" must not be used to endorse or promote products
21      derived from this software without prior written permission.  For
22      written permission, please contact <request_AT_jdom_DOT_org>.
23   
24   4. Products derived from this software may not be called "JDOM", nor
25      may "JDOM" appear in their name, without prior written permission
26      from the JDOM Project Management <request_AT_jdom_DOT_org>.
27   
28   In addition, we request (but do not require) that you include in the 
29   end-user documentation provided with the redistribution and/or in the 
30   software itself an acknowledgement equivalent to the following:
31       "This product includes software developed by the
32        JDOM Project (http://www.jdom.org/)."
33   Alternatively, the acknowledgment may be graphical using the logos 
34   available at http://www.jdom.org/images/logos.
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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 THE JDOM AUTHORS OR THE PROJECT
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   This software consists of voluntary contributions made by many 
50   individuals on behalf of the JDOM Project and was originally 
51   created by Jason Hunter <jhunter_AT_jdom_DOT_org> and
52   Brett McLaughlin <brett_AT_jdom_DOT_org>.  For more information
53   on the JDOM Project, please see <http://www.jdom.org/>.
54   
55   */
56  
57  package org.jdom.adapters;
58  
59  import java.io.*;
60  import java.lang.reflect.*;
61  
62  import org.jdom.*;
63  import org.w3c.dom.Document  ;
64  import org.xml.sax.*;
65  
66  /**
67   * An adapter for the Oracle Version 2 DOM parser.
68   * 
69   * @version $Revision: 1.18 $, $Date: 2004/02/06 09:28:31 $
70   * @author  Brett McLaughlin
71   * @author  Jason Hunter
72   */
73  public class OracleV2DOMAdapter extends AbstractDOMAdapter {
74  
75      private static final String   CVS_ID = 
76        "@(#) $RCSfile: OracleV2DOMAdapter.java,v $ $Revision: 1.18 $ $Date: 2004/02/06 09:28:31 $ $Name:  $";
77  
78      /**
79       * This creates a new <code>{@link Document}</code> from an
80       * existing <code>InputStream</code> by letting a DOM
81       * parser handle parsing using the supplied stream.
82       *
83       * @param in <code>InputStream</code> to parse.
84       * @param validate <code>boolean</code> to indicate if validation should occur.
85       * @return <code>Document</code> - instance ready for use.
86       * @throws IOException when I/O error occurs.
87       * @throws JDOMException when errors occur in parsing.
88       */
89      public Document   getDocument(InputStream in, boolean validate)
90          throws IOException, JDOMException {
91  
92          try {
93              // Load the parser class
94              Class   parserClass = Class.forName("oracle.xml.parser.v2.DOMParser");
95              Object   parser = parserClass.newInstance();
96  
97              // Parse the document
98              Method parse =
99                  parserClass.getMethod("parse",
100                                       new Class  [] {org.xml.sax.InputSource  .class});
101             parse.invoke(parser, new Object  [] {new InputSource(in)});
102 
103             // Get the Document object
104             Method getDocument = parserClass.getMethod("getDocument", null);
105             Document   doc = (Document  )getDocument.invoke(parser, null);
106 
107             return doc;
108         } catch (InvocationTargetException e) {
109             Throwable   targetException = e.getTargetException();
110             if (targetException instanceof org.xml.sax.SAXParseException  ) {
111                 SAXParseException parseException = (SAXParseException)targetException;
112                 throw new JDOMException("Error on line " + parseException.getLineNumber() +
113                                       " of XML document: " + parseException.getMessage(), parseException);
114             } else if (targetException instanceof IOException) {
115                 IOException ioException = (IOException) targetException;
116                 throw ioException;
117             } else {
118                 throw new JDOMException(targetException.getMessage(), targetException);
119             }
120         } catch (Exception   e) {
121             throw new JDOMException(e.getClass().getName() + ": " +
122                                   e.getMessage(), e);
123         }
124     }
125 
126     /**
127      * This creates an empty <code>Document</code> object based
128      * on a specific parser implementation.
129      *
130      * @return <code>Document</code> - created DOM Document.
131      * @throws JDOMException when errors occur.
132      */
133     public Document   createDocument() throws JDOMException {
134         try {
135             return
136                 (Document  )Class.forName(
137                     "oracle.xml.parser.v2.XMLDocument")
138                     .newInstance();
139 
140         } catch (Exception   e) {
141             throw new JDOMException(e.getClass().getName() + ": " +
142                                   e.getMessage() + " when creating document", e);
143         }
144     }
145 }
146
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