View Javadoc

1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package org.eclipse.jetty.webapp;
20  
21  import org.eclipse.jetty.util.resource.Resource;
22  import org.eclipse.jetty.xml.XmlParser;
23  
24  public abstract class Descriptor
25  {
26      protected Resource _xml;
27      protected XmlParser.Node _root;
28      protected XmlParser _parser;
29      protected boolean _validating;
30      
31      public Descriptor (Resource xml)
32      {
33          _xml = xml;
34      }
35      
36      public abstract void ensureParser()
37      throws ClassNotFoundException;
38      
39      public void setValidating (boolean validating)
40      {
41         _validating = validating;
42      }
43      
44      public void parse ()
45      throws Exception
46      {
47          if (_parser == null)
48             ensureParser();
49          
50          if (_root == null)
51          {
52              try
53              {
54                  _root = _parser.parse(_xml.getInputStream());
55              }
56              finally
57              {
58                  _xml.close();
59              }
60          }
61      }
62      
63      public Resource getResource ()
64      {
65          return _xml;
66      }
67      
68      public XmlParser.Node getRoot ()
69      {
70          return _root;
71      }
72      
73      public String toString()
74      {
75          return this.getClass().getSimpleName()+"("+_xml+")";
76      }
77  }