StateObjectPersistenceManager


1   // Copyright 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.engine.state;
16  
17  /**
18   * Interface for the nuts and bolts of getting and storing application state objects. These are
19   * intended to be stateless, and manage a number of state objects, mapping objectNames to internal
20   * storage in some way.
21   * 
22   * @author Howard M. Lewis Ship
23   * @since 4.0
24   */
25  public interface StateObjectPersistenceManager
26  {
27      public boolean exists(String   objectName);
28  
29      public Object   get(String   objectName, StateObjectFactory factory);
30  
31      public void store(String   objectName, Object   stateObject);
32  }

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