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Java > Open Source Codes > org > jboss > kernel > plugins > dependency > InstantiateAction


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, 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.kernel.plugins.dependency;
23
24 import org.jboss.beans.info.spi.BeanInfo;
25 import org.jboss.beans.metadata.spi.BeanMetaData;
26 import org.jboss.joinpoint.spi.Joinpoint;
27 import org.jboss.kernel.Kernel;
28 import org.jboss.kernel.spi.config.KernelConfigurator;
29 import org.jboss.kernel.spi.dependency.KernelController;
30 import org.jboss.kernel.spi.dependency.KernelControllerContext;
31 import org.jboss.kernel.spi.dependency.KernelControllerContextAware;
32 import org.jboss.kernel.spi.metadata.MutableMetaDataContext;
33
34 /**
35  * InstantiateAction.
36  *
37  * @author <a HREF="adrian@jboss.com">Adrian Brock</a>
38  * @version $Revision: 58411 $
39  */
40 public class InstantiateAction extends KernelControllerContextAction
41 {
42    public void installAction(KernelControllerContext context) throws Throwable JavaDoc
43    {
44       KernelController controller = (KernelController) context.getController();
45       Kernel kernel = controller.getKernel();
46       KernelConfigurator configurator = kernel.getConfigurator();
47
48       BeanMetaData metaData = context.getBeanMetaData();
49       BeanInfo info = context.getBeanInfo();
50       final Joinpoint joinPoint = configurator.getConstructorJoinPoint(info, metaData.getConstructor(), metaData);
51
52       Object JavaDoc object = dispatchJoinPoint(context, joinPoint);
53       context.setTarget(object);
54
55       MutableMetaDataContext metaCtx = context.getMetaDataContext();
56       if (metaCtx != null)
57       {
58          metaCtx.setTarget(object);
59       }
60
61       try
62       {
63          if (object != null)
64          {
65             if (context.getBeanInfo() == null)
66             {
67                info = configurator.getBeanInfo(object.getClass());
68                context.setBeanInfo(info);
69             }
70
71 // if (object instanceof KernelControllerContextAware)
72 // ((KernelControllerContextAware) object).setKernelControllerContext(context);
73
74             controller.addInstantiatedContext(context);
75          }
76       }
77       catch (Throwable JavaDoc t)
78       {
79          uninstall(context);
80          throw t;
81       }
82    }
83
84    public void uninstallAction(KernelControllerContext context)
85    {
86       try
87       {
88          Object JavaDoc object = context.getTarget();
89          if (object != null)
90          {
91 // if (object instanceof KernelControllerContextAware)
92 // ((KernelControllerContextAware) object).unsetKernelControllerContext(context);
93
94             KernelController controller = (KernelController) context.getController();
95             controller.removeInstantiatedContext(context);
96          }
97
98       }
99       catch (Throwable JavaDoc ignored)
100       {
101          log.debug("Ignored error unsetting context ", ignored);
102       }
103       finally
104       {
105          context.setTarget(null);
106       }
107    }
108 }
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