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Java > Open Source Codes > gov > nasa > jpf > BootstrapXMLTraceHandler


1 //
2 // Copyright (C) 2005 United States Government as represented by the
3 // Administrator of the National Aeronautics and Space Administration
4 // (NASA). All Rights Reserved.
5 //
6 // This software is distributed under the NASA Open Source Agreement
7 // (NOSA), version 1.3. The NOSA has been approved by the Open Source
8 // Initiative. See the file NOSA-1.3-JPF at the top of the distribution
9 // directory tree for the complete NOSA document.
10 //
11 // THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
12 // KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
13 // LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
14 // SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
15 // A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
16 // THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
17 // DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
18 //
19 package gov.nasa.jpf;
20
21 import gov.nasa.jpf.Path;
22
23 import org.xml.sax.*;
24 import org.xml.sax.helpers.*;
25
26
27 /**
28  * DOCUMENT ME!
29  */
30 public class BootstrapXMLTraceHandler extends DefaultHandler {
31   XMLTraceHandler realHandler;
32   Path path;
33
34   public Path getPath () {
35     return path;
36   }
37
38   public void characters (char[] text, int start, int length) {
39     if (realHandler != null) {
40       realHandler.characters(text, start, length);
41     }
42   }
43
44   public void endElement (String JavaDoc namespaceURI, String JavaDoc localName,
45                           String JavaDoc qualifiedName) throws SAXException {
46     if (realHandler != null) {
47       realHandler.endElement(namespaceURI, localName, qualifiedName);
48
49       if (localName.equals("Trace")) {
50         path = realHandler.getPath();
51       }
52     }
53   }
54
55   public void startElement (String JavaDoc namespaceURI, String JavaDoc localName,
56                             String JavaDoc qualifiedName, Attributes atts)
57                      throws SAXException {
58     if (localName.equals("Trace")) {
59       String JavaDoc clsName = atts.getValue("Handler");
60
61       try {
62         Class JavaDoc clazz = Class.forName(clsName);
63         realHandler = (XMLTraceHandler) clazz.newInstance();
64       } catch (Exception JavaDoc x) {
65         throw new JPFException("cannot instantiate traceHandler class " +
66                                     clsName + " : " + x);
67       }
68     }
69
70     // all the real work is supposed to be done by the realHandler
71 if (realHandler != null) {
72       realHandler.startElement(namespaceURI, localName, qualifiedName, atts);
73     }
74   }
75 }
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