StateImpl


1   /*
2    * Copyright  1999-2004 The Apache Software Foundation
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   */
17  
18  /* $Id: StateImpl.java 42598 2004-03-01 16:18:28Z gregor $  */
19  
20  package org.apache.lenya.workflow.impl;
21  
22  import org.apache.lenya.workflow.State;
23  
24  
25  /**
26   * Implementation of a state.
27   */
28  public class StateImpl implements State {
29      
30      /**
31       * Creates a new instance of StateImpl
32       * @param stateId The state ID.
33       */
34      protected StateImpl(String   stateId) {
35          id = stateId;
36      }
37  
38      private String   id;
39  
40      /**
41       * Returns the state ID.
42       * @return A string.
43       */
44      public String   getId() {
45          return id;
46      }
47  
48      /**
49       * @see java.lang.Object#toString()
50       */
51      public String   toString() {
52          return getId();
53      }
54  
55      /**
56       * @see java.lang.Object#equals(java.lang.Object)
57       */
58      public boolean equals(Object   object) {
59          boolean result = false;
60  
61          if (object instanceof StateImpl) {
62              result = getId().equals(((StateImpl) object).getId());
63          } else {
64              result = super.equals(object);
65          }
66  
67          return result;
68      }
69  
70      /**
71       * @see java.lang.Object#hashCode()
72       */
73      public int hashCode() {
74          return getId().hashCode();
75      }
76  }
77
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