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Java > Open Source Codes > org > jboss > test > idgen > ejb > IdCounterBean


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.test.idgen.ejb;
23
24 import java.rmi.RemoteException JavaDoc;
25 import javax.ejb.*;
26 import javax.naming.*;
27
28 import org.jboss.test.util.ejb.EntitySupport;
29
30 /**
31  *
32  * @see <related>
33  * @author $Author: starksm $
34  * @version $Revision: 37406 $
35  */
36 public abstract class IdCounterBean
37    extends EntitySupport
38 {
39    long nextId;
40    long size;
41    
42    public long getNextValue()
43    {
44       // Is sequence finished?
45 // If so start a new one
46
47       if (nextId == (getCurrentValue() + size))
48       {
49          setCurrentValue(nextId);
50       }
51       
52       return nextId++;
53    }
54    
55    public abstract long getCurrentValue();
56    public abstract void setCurrentValue(long current);
57     
58    public abstract String JavaDoc getName();
59    public abstract void setName(String JavaDoc beanName);
60     
61    public void ejbLoad()
62       throws RemoteException JavaDoc
63    {
64       nextId = getCurrentValue();
65    }
66     
67    public void setEntityContext(EntityContext ctx)
68       throws RemoteException JavaDoc
69    {
70       super.setEntityContext(ctx);
71       
72       try {
73          size = ((Long JavaDoc)new InitialContext().lookup("java:comp/env/size")).longValue();
74       }
75       catch (Exception JavaDoc e) {
76          throw new EJBException(e);
77       }
78    }
79 }
80
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