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Java > Open Source Codes > org > jboss > kernel > plugins > registry > basic > BasicKernelRegistry


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.registry.basic;
23
24 import org.jboss.kernel.Kernel;
25 import org.jboss.kernel.plugins.registry.AbstractKernelRegistry;
26 import org.jboss.kernel.spi.event.KernelEvent;
27 import org.jboss.kernel.spi.registry.KernelRegistryEntry;
28 import org.jboss.kernel.spi.registry.KernelRegistryPlugin;
29
30 /**
31  * Basic Kernel registry.
32  *
33  * @author <a HREF="adrian@jboss.com">Adrian Brock</a>
34  * @version $Revision: 40742 $
35  */
36 public class BasicKernelRegistry extends AbstractKernelRegistry
37 {
38    /** The default registry factory */
39    protected BasicKernelRegistryFactory defaultFactory = new BasicKernelRegistryFactory();
40
41    /**
42     * Create a new basic registry
43     *
44     * @throws Exception for any error
45     */
46    public BasicKernelRegistry() throws Exception JavaDoc
47    {
48       addKernelRegistryFactory(defaultFactory);
49    }
50
51    public void registerEntry(Object JavaDoc name, KernelRegistryEntry entry)
52    {
53       Kernel.checkConfigure();
54
55       defaultFactory.registerEntry(name, entry);
56
57       Object JavaDoc target = entry.getTarget();
58       if (target != null && target instanceof KernelRegistryPlugin)
59       {
60          KernelRegistryPlugin factory = (KernelRegistryPlugin) target;
61          addKernelRegistryFactory(factory);
62       }
63       
64       if (hasListeners())
65       {
66          KernelEvent event = createEvent(KERNEL_REGISTRY_REGISTERED, name);
67          fireKernelEvent(event);
68       }
69    }
70
71    public KernelRegistryEntry unregisterEntry(Object JavaDoc name)
72    {
73       Kernel.checkConfigure();
74
75       KernelRegistryEntry entry = defaultFactory.unregisterEntry(name);
76
77       Object JavaDoc target = entry.getTarget();
78       if (target != null && target instanceof KernelRegistryPlugin)
79       {
80          KernelRegistryPlugin factory = (KernelRegistryPlugin) target;
81          removeKernelRegistryFactory(factory);
82       }
83
84       if (hasListeners())
85       {
86          KernelEvent event = createEvent(KERNEL_REGISTRY_UNREGISTERED, name);
87          fireKernelEvent(event);
88       }
89       
90       return entry;
91    }
92 }
93
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