IsValidUserForAllBackends


1   /**
2    * Sequoia: Database clustering technology.
3    * Copyright (C) 2005 AmicoSoft, Inc. dba Emic Networks
4    * Contact: sequoia@continuent.org
5    * 
6    * Licensed under the Apache License, Version 2.0 (the "License");
7    * you may not use this file except in compliance with the License.
8    * You may obtain a copy of the License at
9    * 
10   * http://www.apache.org/licenses/LICENSE-2.0
11   * 
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License. 
17   *
18   * Initial developer(s): Damian Arregui.
19   * Contributor(s): ______________________.
20   */
21  
22  package org.continuent.sequoia.controller.virtualdatabase.protocol;
23  
24  import java.io.Serializable  ;
25  
26  import org.continuent.hedera.common.Member;
27  import org.continuent.sequoia.common.users.VirtualDatabaseUser;
28  import org.continuent.sequoia.controller.virtualdatabase.DistributedVirtualDatabase;
29  
30  /**
31   * This class defines a IsValidUserForAllBackends command.
32   * 
33   * @author <a HREF="mailto:Damian.Arregui@continuent.com">Damian Arregui</a>
34   * @version 1.0
35   */
36  public class IsValidUserForAllBackends
37      extends DistributedVirtualDatabaseMessage
38  {
39    private static final long   serialVersionUID = -1267300635779611796L;
40  
41    private VirtualDatabaseUser vdbUser;
42  
43    /**
44     * Creates a new <code>IsValidUserForAllBackends</code> object
45     * 
46     * @param vdbUser user to be checked on backends.
47     */
48    public IsValidUserForAllBackends(VirtualDatabaseUser vdbUser)
49    {
50      this.vdbUser = vdbUser;
51    }
52  
53    /**
54     * @see org.continuent.sequoia.controller.virtualdatabase.protocol.DistributedVirtualDatabaseMessage#handleMessageMultiThreaded(org.continuent.sequoia.controller.virtualdatabase.DistributedVirtualDatabase,
55     *      org.continuent.hedera.common.Member, java.lang.Object)
56     */
57    public Serializable   handleMessageMultiThreaded(
58        DistributedVirtualDatabase dvdb, Member sender,
59        Object   handleMessageSingleThreadedResult)
60    {
61      return (Boolean  ) handleMessageSingleThreadedResult;
62    }
63  
64    /**
65     * @see org.continuent.sequoia.controller.virtualdatabase.protocol.DistributedVirtualDatabaseMessage#handleMessageSingleThreaded(org.continuent.sequoia.controller.virtualdatabase.DistributedVirtualDatabase,
66     *      org.continuent.hedera.common.Member)
67     */
68    public Object   handleMessageSingleThreaded(DistributedVirtualDatabase dvdb,
69        Member sender)
70    {
71      // Checking authenticationManager.isTransparentLoginEnabled() is redundant
72      // if the request has been issued through this controller: the same check is
73      // performed at the vdb worker thread level.
74      return new Boolean  (dvdb.getAuthenticationManager()
75          .isTransparentLoginEnabled()
76          && dvdb.isValidUserForAllBackends(vdbUser));
77    }
78  
79  }
80
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