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


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.util.Properties JavaDoc;
25
26 import javax.management.MBeanAttributeInfo JavaDoc;
27
28 import org.jboss.deployment.DeploymentException;
29 import org.jboss.util.propertyeditor.PropertyEditors;
30 import org.w3c.dom.Element JavaDoc;
31 import org.w3c.dom.Node JavaDoc;
32 import org.w3c.dom.NodeList JavaDoc;
33
34 /**
35  * ServiceJavaBeanValueMetaData.
36  *
37  * This class is based on the old ServiceConfigurator
38  *
39  * @author <a HREF="mailto:marc@jboss.org">Marc Fleury</a>
40  * @author <a HREF="mailto:hiram@jboss.org">Hiram Chirino</a>
41  * @author <a HREF="mailto:d_jencks@users.sourceforge.net">David Jencks</a>
42  * @author <a HREF="mailto:jason@planet57.com">Jason Dillon</a>
43  * @author <a HREF="mailto:dimitris@jboss.org">Dimitris Andreadis</a>
44  * @author <a HREF="adrian@jboss.com">Adrian Brock</a>
45  * @version $Revision: 1.1 $
46  */
47 public class ServiceJavaBeanValueMetaData extends ServiceElementValueMetaData
48 {
49    /**
50     * Create a new ServiceJavaBeanValueMetaData.
51     */
52    public ServiceJavaBeanValueMetaData()
53    {
54       super();
55    }
56
57    /**
58     * Create a new ServiceJavaBeanValueMetaData.
59     *
60     * @param element the element
61     */
62    public ServiceJavaBeanValueMetaData(Element JavaDoc element)
63    {
64       super(element);
65    }
66
67    public Object JavaDoc getValue(ServiceValueContext valueContext) throws Exception JavaDoc
68    {
69       MBeanAttributeInfo JavaDoc attributeInfo = valueContext.getAttributeInfo();
70       ClassLoader JavaDoc cl = valueContext.getClassloader();
71       boolean trim = valueContext.isTrim();
72       boolean replace = valueContext.isReplace();
73       
74       // Extract the property elements
75 Element JavaDoc element = getElement();
76       String JavaDoc attributeClassName = element.getAttribute("attributeClass");
77       if( attributeClassName == null || attributeClassName.length() == 0 )
78          attributeClassName = attributeInfo.getType();
79       if (attributeClassName == null)
80          throw new DeploymentException("AttributeInfo for " + attributeInfo.getName() + " has no type");
81       Class JavaDoc attributeClass = cl.loadClass(attributeClassName);
82       // Create the bean instance
83 Object JavaDoc bean = attributeClass.newInstance();
84       // Get the JavaBean properties
85 NodeList JavaDoc properties = element.getElementsByTagName("property");
86       Properties JavaDoc beanProps = new Properties JavaDoc();
87       for(int n = 0; n < properties.getLength(); n ++)
88       {
89          // Skip over non-element nodes
90 Node JavaDoc node = properties.item(n);
91          if (node.getNodeType() != Node.ELEMENT_NODE)
92          {
93             continue;
94          }
95          Element JavaDoc property = (Element JavaDoc) node;
96          String JavaDoc name = property.getAttribute("name");
97          String JavaDoc value = ServiceMetaDataParser.getElementTextContent(property, trim, replace);
98          beanProps.setProperty(name, value);
99       }
100
101       // Apply the properties to the bean
102 PropertyEditors.mapJavaBeanProperties(bean, beanProps);
103       return bean;
104    }
105 }
106
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