KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jboss > ejb > plugins > local > EntityProxy


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.ejb.plugins.local;
23
24 import java.lang.reflect.InvocationHandler JavaDoc;
25 import java.lang.reflect.Method JavaDoc;
26
27 /** The EJBLocal proxy for an entity
28
29  @author <a HREF="mailto:scott.stark@jboss.org">Scott Stark</a>
30  @version $Revision: 37459 $
31  */
32 class EntityProxy extends LocalProxy
33    implements InvocationHandler JavaDoc
34 {
35    static final long serialVersionUID = 5196148608172665115L;
36    private Object JavaDoc cacheKey;
37    private boolean removed;
38
39    EntityProxy(String JavaDoc jndiName, Object JavaDoc id, BaseLocalProxyFactory factory)
40    {
41       super(jndiName, factory);
42       cacheKey = id;
43    }
44
45    protected Object JavaDoc getId()
46    {
47       return cacheKey;
48    }
49
50    public final Object JavaDoc invoke(final Object JavaDoc proxy, final Method JavaDoc m, Object JavaDoc[] args)
51       throws Throwable JavaDoc
52    {
53       if(removed)
54       {
55          throw new javax.ejb.NoSuchObjectLocalException JavaDoc("The instance has been removed: " + toStringImpl());
56       }
57
58       if (args == null)
59          args = EMPTY_ARGS;
60
61       Object JavaDoc retValue = super.invoke( proxy, m, args );
62       if( retValue == null )
63       {
64          // If not taken care of, go on and call the container
65 retValue = factory.invoke(cacheKey, m, args);
66       }
67
68       if(m.equals(REMOVE))
69       {
70          removed = true;
71       }
72
73       return retValue;
74    }
75
76 }
77
Popular Tags