AbstractUseCase


1   package org.apache.ojb.broker.prevayler.demo;
2   
3   /* Copyright 2003-2005 The Apache Software Foundation
4    *
5    * Licensed under the Apache License, Version 2.0 (the "License");
6    * you may not use this file except in compliance with the License.
7    * You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17   
18  import org.apache.ojb.broker.PersistenceBroker;
19  
20  import java.io.BufferedReader  ;
21  import java.io.InputStreamReader  ;
22  
23  /**
24   * Insert the type's description here.
25   * Creation date: (04.03.2001 11:31:41)
26   * @author Thomas Mahler
27   */
28  public abstract class AbstractUseCase implements UseCase
29  {
30      protected PersistenceBroker broker;
31  
32      /**
33       * AbstractUseCase constructor comment.
34       */
35      public AbstractUseCase(PersistenceBroker broker)
36      {
37          this.broker = broker;
38      }
39  
40      /** perform this use case*/
41      public abstract void apply();
42  
43      /** get descriptive information on use case*/
44      public abstract String   getDescription();
45  
46      /**
47       * read a single line from stdin and return as String
48       */
49      protected String   readLineWithMessage(String   message)
50      {
51          System.out.print(message + " ");
52          try
53          {
54              BufferedReader   rin = new BufferedReader  (new InputStreamReader  (System.in));
55              return rin.readLine();
56          }
57          catch (Exception   e)
58          {
59              return "";
60          }
61      }
62  }
63
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