AbstractHandle


1   /*
2    * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3    *
4    * This file is part of Resin(R) Open Source
5    *
6    * Each copy or derived work must preserve the copyright notice and this
7    * notice unmodified.
8    *
9    * Resin Open Source is free software; you can redistribute it and/or modify
10   * it under the terms of the GNU General Public License as published by
11   * the Free Software Foundation; either version 2 of the License, or
12   * (at your option) any later version.
13   *
14   * Resin Open Source is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17   * of NON-INFRINGEMENT.  See the GNU General Public License for more
18   * details.
19   *
20   * You should have received a copy of the GNU General Public License
21   * along with Resin Open Source; if not, write to the
22   *   Free SoftwareFoundation, Inc.
23   *   59 Temple Place, Suite 330
24   *   Boston, MA 02111-1307  USA
25   *
26   * @author Scott Ferguson
27   */
28  
29  package com.caucho.ejb.protocol;
30  
31  import com.caucho.log.Log;
32  
33  import javax.ejb.EJBObject  ;
34  import javax.ejb.Handle  ;
35  import java.util.logging.Level  ;
36  import java.util.logging.Logger  ;
37  
38  /**
39   * Handle implementation for EJB Objects.
40   *
41   * <code><pre>
42   * String url = "http://localhost:8080/ejb/houses/Gryffindor";
43   * HandleImpl handle = new HandleImpl(url);
44   *
45   * test.RemoteBean bean = (test.RemoteBean) handle.getEJBObject();
46   * </pre></code>
47   */
48  abstract public class AbstractHandle implements Handle   {
49    protected static final Logger   log = Log.open(AbstractHandle.class);
50    
51    /**
52     * Returns the server id for the handle.
53     */
54    // public abstract String getServerId();
55    
56    /**
57     * Returns the object id for the handle.
58     */
59    public abstract String   getObjectId();
60  
61    /**
62     * Returns the remote API class.
63     */
64    public Class   getType()
65    {
66      try {
67        EJBObject   obj = getEJBObject();
68      
69        return obj.getEJBHome().getEJBMetaData().getRemoteInterfaceClass();
70      } catch (Exception   e) {
71        log.log(Level.WARNING, e.toString(), e);
72        return null;
73      }
74    }
75  
76    /**
77     * Returns the URL for a particular protocol.
78     */
79    abstract public String   getURL(String   protocol);
80  }
81
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