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Java > Open Source Codes > org > objectweb > proactive > core > xml > handler > BasicUnmarshaller


1 /*
2 * ################################################################
3 *
4 * ProActive: The Java(TM) library for Parallel, Distributed,
5 * Concurrent computing with Security and Mobility
6 *
7 * Copyright (C) 1997-2002 INRIA/University of Nice-Sophia Antipolis
8 * Contact: proactive-support@inria.fr
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 * USA
24 *
25 * Initial developer(s): The ProActive Team
26 * http://www.inria.fr/oasis/ProActive/contacts.html
27 * Contributor(s):
28 *
29 * ################################################################
30 */
31 package org.objectweb.proactive.core.xml.handler;
32
33 import org.objectweb.proactive.core.xml.io.Attributes;
34
35
36 /**
37  *
38  * Receives SAX event and pass them on
39  *
40  * @author Lionel Mestre
41  * @version 0.91
42  *
43  */
44 public class BasicUnmarshaller implements UnmarshallerHandler {
45     protected Object JavaDoc resultObject;
46     protected boolean isResultValid = true;
47
48     //
49 // -- CONSTRUCTORS -----------------------------------------------
50 //
51 public BasicUnmarshaller() {
52     }
53
54     //
55 // -- PUBLIC METHODS -----------------------------------------------
56 //
57 //
58 // -- implements UnmarshallerHandler ------------------------------------------------------
59 //
60 public Object JavaDoc getResultObject() throws org.xml.sax.SAXException JavaDoc {
61         if (!isResultValid) {
62             throw new org.xml.sax.SAXException JavaDoc("The result object is not valid");
63         }
64         Object JavaDoc o = resultObject;
65         resultObject = null;
66         isResultValid = false;
67         return o;
68     }
69
70     public void startContextElement(String JavaDoc name, Attributes attributes)
71         throws org.xml.sax.SAXException JavaDoc {
72     }
73
74     //
75 // -- implements XMLHandler ------------------------------------------------------
76 //
77 public void startElement(String JavaDoc name, Attributes attributes)
78         throws org.xml.sax.SAXException JavaDoc {
79     }
80
81     public void endElement(String JavaDoc name) throws org.xml.sax.SAXException JavaDoc {
82     }
83
84     public void readValue(String JavaDoc value) throws org.xml.sax.SAXException JavaDoc {
85     }
86
87     public void startPrefixMapping(String JavaDoc prefix, String JavaDoc uri)
88         throws org.xml.sax.SAXException JavaDoc {
89     }
90
91     public void endPrefixMapping(String JavaDoc prefix) throws org.xml.sax.SAXException JavaDoc {
92     }
93
94     //
95 // -- PROTECTED METHODS ------------------------------------------------------
96 //
97 protected void setResultObject(Object JavaDoc value) {
98         isResultValid = true;
99         resultObject = value;
100     }
101
102     protected boolean checkNonEmpty(String JavaDoc s) {
103         return (s != null) && (s.length() > 0);
104     }
105
106     //
107 // -- PRIVATE METHODS ------------------------------------------------------
108 //
109 }
110
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