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Java > Open Source Codes > org > jboss > ejb3 > KernelAbstractionFactory


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.ejb3;
23
24 import javax.management.MBeanServer JavaDoc;
25 import javax.management.MBeanServerConnection JavaDoc;
26
27 import org.jboss.kernel.Kernel;
28 import org.jboss.logging.Logger;
29
30 /**
31  * @version <tt>$Revision: 46471 $</tt>
32  * @author <a HREF="mailto:bdecoste@jboss.com">William DeCoste</a>
33  */
34 public class KernelAbstractionFactory
35 {
36    private static final Logger log = Logger.getLogger(KernelAbstractionFactory.class);
37    
38    private static ClientKernelAbstraction clientKernelAbstraction = null;
39    private static KernelAbstraction kernelAbstraction = null;
40    private static Kernel kernel = null;
41   
42    public static KernelAbstraction getInstance() throws Exception JavaDoc
43    {
44       if (kernelAbstraction == null)
45       {
46          MBeanServer JavaDoc mbeanServer = (MBeanServer JavaDoc)getMBeanServer();
47          if (kernel != null)
48             kernelAbstraction = new MCKernelAbstraction(kernel, mbeanServer);
49          else
50          {
51             kernelAbstraction = new JmxKernelAbstraction(mbeanServer);
52          }
53       }
54      
55      return kernelAbstraction;
56    }
57    
58    public static ClientKernelAbstraction getClientInstance() throws Exception JavaDoc
59    {
60       if (clientKernelAbstraction == null)
61       {
62          if (kernel != null)
63          {
64             clientKernelAbstraction = new MCClientKernelAbstraction(kernel);
65          }
66          else
67          {
68             MBeanServerConnection JavaDoc mbeanServer = (MBeanServerConnection JavaDoc)getMBeanServer();
69             clientKernelAbstraction = new JmxClientKernelAbstraction(mbeanServer);
70          }
71       }
72      
73      return clientKernelAbstraction;
74    }
75   
76    public static void setKernel(Kernel k)
77    {
78       kernel = k;
79       kernelAbstraction = null;
80       clientKernelAbstraction = null;
81    }
82    
83    protected static MBeanServerConnection JavaDoc getMBeanServer() throws Exception JavaDoc
84    {
85       MBeanServerConnection JavaDoc mbeanServer;
86          
87       try
88       {
89          mbeanServer = org.jboss.mx.util.MBeanServerLocator.locateJBoss();
90       }
91       catch (IllegalStateException JavaDoc e)
92       {
93          String JavaDoc adaptorName = System.getProperty("jbosstest.server.name", "jmx/invoker/RMIAdaptor");
94          mbeanServer = (MBeanServerConnection JavaDoc)InitialContextFactory.getInitialContext().lookup(adaptorName);
95       }
96       
97       return mbeanServer;
98    }
99 }
100
101
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