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1   /*
2    * Copyright 2004 Charles Blaxland
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package mnemosyne.system;
17  
18  import mnemosyne.core.TransactionAbortedException;
19  
20  
21  /***
22   * @version $Id: PersistentSystem.java,v 1.2 2004/08/12 14:01:06 charlesblaxland Exp $
23   */
24  public interface PersistentSystem
25  {
26      public void advanceVersion();
27      public Object getPersistentRoot(String rootName);
28      public void setPersistentRoot(String rootName, Object value);
29      public void removePersistentRoot(String rootName);
30      public void beginTransaction();
31      public void endTransaction() throws TransactionAbortedException;
32  }