DependencyHandler


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10  * the License, or (at your option) any later version.
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14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
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19  * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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21  */
22  package org.jboss.kernel.plugins.deployment.xml;
23  
24  import javax.xml.namespace.NamespaceContext  ;
25  import javax.xml.namespace.QName  ;
26  
27  import org.jboss.beans.metadata.plugins.AbstractDependencyValueMetaData;
28  import org.jboss.dependency.spi.ControllerState;
29  import org.jboss.xb.binding.sunday.unmarshalling.DefaultElementHandler;
30  import org.jboss.xb.binding.sunday.unmarshalling.ElementBinding;
31  import org.xml.sax.Attributes  ;
32  
33  /**
34   * DependencyHandler.
35   * 
36   * @author <a HREF="adrian@jboss.com">Adrian Brock</a>
37   * @version $Revision: 56471 $
38   */
39  public class DependencyHandler extends DefaultElementHandler
40  {
41     /** The handler */
42     public static final DependencyHandler HANDLER = new DependencyHandler();
43  
44     public Object   startElement(Object   parent, QName   name, ElementBinding element)
45     {
46        return new AbstractDependencyValueMetaData();
47     }
48  
49     public void attributes(Object   o, QName   elementName, ElementBinding element, Attributes   attrs, NamespaceContext   nsCtx)
50     {
51        AbstractDependencyValueMetaData dependency = (AbstractDependencyValueMetaData) o;
52        for (int i = 0; i < attrs.getLength(); ++i)
53        {
54           String   localName = attrs.getLocalName(i);
55           if ("bean".equals(localName))
56              dependency.setValue(attrs.getValue(i));
57           else if ("property".equals(localName))
58              dependency.setProperty(attrs.getValue(i));
59           else if ("state".equals(localName))
60              dependency.setDependentState(new ControllerState(attrs.getValue(i)));
61           else if ("whenRequired".equals(localName))
62              dependency.setWhenRequiredState(new ControllerState(attrs.getValue(i)));
63        }
64     }
65     
66     public Object   endElement(Object   o, QName   qName, ElementBinding element)
67     {
68        AbstractDependencyValueMetaData x = (AbstractDependencyValueMetaData) o;
69        String   name = (String  ) x.getUnderlyingValue();
70        if (name == null || name.trim().length() == 0)
71           throw new IllegalArgumentException  ("Null or empty bean in injection.");
72        return o;
73     }
74  }
75
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