ITableSessionStateManager


1   // Copyright 2004, 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.tapestry.contrib.table.model;
16  
17  import java.io.Serializable  ;
18  
19  /**
20   * An  interface responsible for determining <b>what</b> data would be stored 
21   * in the session between requests. 
22   * It could be only the table state, it could be entire table including the data,
23   * or it could be nothing at all. 
24   * It is all determined by the implemention of this interface.
25   * 
26   * @author mindbridge
27   */
28  public interface ITableSessionStateManager
29  {
30  
31      /**
32       * Method getSessionState extracts the "persistent" portion of the table model
33       * @param objModel the table model to extract the session state from
34       * @return Object the session state to be saved between the requests
35       */
36      Serializable   getSessionState(ITableModel objModel);
37  
38      /**
39       * Method recreateTableModel recreates a table model from the saved session state
40       * @param objState the saved session state
41       * @return ITableModel the recreated table model
42       */
43      ITableModel recreateTableModel(Serializable   objState);
44  }
45

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