KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > protomatter > j2ee > ejb > ProtoEntityEJB


1 package com.protomatter.j2ee.ejb;
2
3 /**
4  * {{{ The Protomatter Software License, Version 1.0
5  * derived from The Apache Software License, Version 1.1
6  *
7  * Copyright (c) 1998-2002 Nate Sammons. All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution,
22  * if any, must include the following acknowledgment:
23  * "This product includes software developed for the
24  * Protomatter Software Project
25  * (http://protomatter.sourceforge.net/)."
26  * Alternately, this acknowledgment may appear in the software itself,
27  * if and wherever such third-party acknowledgments normally appear.
28  *
29  * 4. The names "Protomatter" and "Protomatter Software Project" must
30  * not be used to endorse or promote products derived from this
31  * software without prior written permission. For written
32  * permission, please contact support@protomatter.com.
33  *
34  * 5. Products derived from this software may not be called "Protomatter",
35  * nor may "Protomatter" appear in their name, without prior written
36  * permission of the Protomatter Software Project
37  * (support@protomatter.com).
38  *
39  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
40  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
41  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
42  * DISCLAIMED. IN NO EVENT SHALL THE PROTOMATTER SOFTWARE PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
45  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
46  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
47  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
48  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
49  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50  * SUCH DAMAGE. }}}
51  */
52
53 import javax.ejb.*;
54
55 /**
56  * Entity EJB base class.
57  */
58 public abstract class ProtoEntityEJB
59 extends ProtoEJB
60 implements EntityBean
61 {
62   private EntityContext entityContext = null;
63
64   /**
65    * Default constructor.
66    */
67   public ProtoEntityEJB()
68   {
69     super();
70   }
71
72   /**
73    * Set the entity context. Also calls
74    * {@link #initSyslogChannelList() initSyslogChannelList()}
75    * to read the channel list from the deployment information.
76    */
77   public void setEntityContext(EntityContext context)
78   {
79     this.entityContext = context;
80     if (context != null)
81       initSyslogChannelList();
82   }
83
84   /**
85    * Unset the entity context.
86    */
87   public void unsetEntityContext()
88   {
89     setEntityContext(null);
90   }
91
92   /**
93    * Get the entity context.
94    */
95   protected EntityContext getEntityContext()
96   {
97     return this.entityContext;
98   }
99
100   /**
101    * Get the current primary key. Returns <tt>null</tt> if
102    * the entity context is not currently set.
103    */
104   protected Object JavaDoc getPrimaryKey()
105   {
106     EntityContext context = getEntityContext();
107     return (context == null) ? null : context.getPrimaryKey();
108   }
109
110   /**
111    * EJB activation callback. This implementation does nothing.
112    */
113   public void ejbActivate()
114   {
115   }
116
117   /**
118    * EJB passivation callback. This implementation does nothing.
119    */
120   public void ejbPassivate()
121   {
122   }
123 }
124
Popular Tags