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Java > Open Source Codes > org > objectweb > easybeans > deployment > xml > EJB3DeploymentDesc


1 /**
2  * EasyBeans
3  * Copyright (C) 2006 Bull S.A.S.
4  * Contact: easybeans@objectweb.org
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19  * USA
20  *
21  * --------------------------------------------------------------------------
22  * $Id: EJB3DeploymentDesc.java 925 2006-07-25 12:37:03Z benoitf $
23  * --------------------------------------------------------------------------
24  */
25
26 package org.objectweb.easybeans.deployment.xml;
27
28 import java.net.URL JavaDoc;
29
30 import org.objectweb.easybeans.api.EZBArchive;
31 import org.objectweb.easybeans.api.EZBArchiveException;
32 import org.objectweb.easybeans.deployment.xml.parsing.EJB3DeploymentDescLoader;
33 import org.objectweb.easybeans.deployment.xml.parsing.ParsingException;
34 import org.objectweb.easybeans.deployment.xml.struct.EJB3;
35
36 /**
37  * Utility class to get a deployment descriptor.
38  * @author Florent Benoit
39  */
40 public final class EJB3DeploymentDesc {
41
42     /**
43      * Utility class, no public constructor.
44      */
45     private EJB3DeploymentDesc() {
46
47     }
48
49     /**
50      * Gets EJB3 for a given archive.
51      * @param archive file/directory.
52      * @throws EJB3DeploymentDescException if no xml is present.
53      * @return EJB3 instance or null.
54      */
55     public static EJB3 getEjb3(final EZBArchive archive) throws EJB3DeploymentDescException {
56
57         // Get XML entry
58 URL JavaDoc ejbjarXmlURL = null;
59         try {
60             ejbjarXmlURL = archive.getResource("META-INF/ejb-jar.xml");
61         } catch (EZBArchiveException e) {
62             throw new EJB3DeploymentDescException("Cannot get resource 'META-INF/ejb-jar.xml' on the archive '"
63                     + archive.getName() + "'.");
64         }
65
66         EJB3 ejb3 = null;
67         // Get EJB3 object (if url valid)
68 if (ejbjarXmlURL != null) {
69              try {
70                  ejb3 = EJB3DeploymentDescLoader.loadDeploymentDescriptor(ejbjarXmlURL);
71             } catch (ParsingException e) {
72                 throw new EJB3DeploymentDescException("Cannot parse URL '" + ejbjarXmlURL + "'.");
73             }
74         }
75         return ejb3;
76     }
77 }
78
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