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Java > Open Source Codes > org > jboss > system > metadata > ServiceJBXBValueMetaData


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2006, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.system.metadata;
23
24 import java.io.StringReader JavaDoc;
25
26 import org.jboss.system.ServiceConfigurator;
27 import org.jboss.xb.binding.Unmarshaller;
28 import org.jboss.xb.binding.UnmarshallerFactory;
29 import org.jboss.xb.binding.sunday.unmarshalling.SchemaBindingResolver;
30 import org.jboss.xb.binding.sunday.unmarshalling.SingletonSchemaResolverFactory;
31 import org.w3c.dom.Element JavaDoc;
32
33 /**
34  * ServiceJBXBValueMetaData.
35  *
36  * This class is based on the old ServiceConfigurator
37  *
38  * @author <a HREF="mailto:marc@jboss.org">Marc Fleury</a>
39  * @author <a HREF="mailto:hiram@jboss.org">Hiram Chirino</a>
40  * @author <a HREF="mailto:d_jencks@users.sourceforge.net">David Jencks</a>
41  * @author <a HREF="mailto:jason@planet57.com">Jason Dillon</a>
42  * @author <a HREF="mailto:dimitris@jboss.org">Dimitris Andreadis</a>
43  * @author <a HREF="adrian@jboss.com">Adrian Brock</a>
44  * @version $Revision: 1.1 $
45  */
46 public class ServiceJBXBValueMetaData extends ServiceElementValueMetaData
47 {
48    /**
49     * Create a new ServiceJBXBValueMetaData.
50     */
51    public ServiceJBXBValueMetaData()
52    {
53       super();
54    }
55
56    /**
57     * Create a new ServiceJBXBValueMetaData.
58     *
59     * @param element the element
60     */
61    public ServiceJBXBValueMetaData(Element JavaDoc element)
62    {
63       super(element);
64    }
65
66    public Object JavaDoc getValue(ServiceValueContext valueContext) throws Exception JavaDoc
67    {
68       // Get the attribute element content in a parsable form
69 StringBuffer JavaDoc buffer = ServiceConfigurator.getElementContent(getElement());
70
71       Thread JavaDoc current = Thread.currentThread();
72       ClassLoader JavaDoc oldTcl = current.getContextClassLoader();
73       ClassLoader JavaDoc cl = valueContext.getClassloader();
74       if (cl != null)
75          current.setContextClassLoader(cl);
76       try
77       {
78          // Parse the attribute element content
79 SchemaBindingResolver resolver = SingletonSchemaResolverFactory.getInstance().getSchemaBindingResolver();
80          Unmarshaller unmarshaller = UnmarshallerFactory.newInstance().newUnmarshaller();
81          StringReader JavaDoc reader = new StringReader JavaDoc(buffer.toString());
82          Object JavaDoc bean = unmarshaller.unmarshal(reader, resolver);
83          return bean;
84       }
85       finally
86       {
87          if (cl != null)
88             current.setContextClassLoader(oldTcl);
89       }
90    }
91 }
92
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