ComparisonTerm


1   /*
2    * The contents of this file are subject to the terms 
3    * of the Common Development and Distribution License 
4    * (the "License").  You may not use this file except 
5    * in compliance with the License.
6    * 
7    * You can obtain a copy of the license at 
8    * glassfish/bootstrap/legal/CDDLv1.0.txt or 
9    * https://glassfish.dev.java.net/public/CDDLv1.0.html. 
10   * See the License for the specific language governing 
11   * permissions and limitations under the License.
12   * 
13   * When distributing Covered Code, include this CDDL 
14   * HEADER in each file and include the License file at 
15   * glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable, 
16   * add the following below this CDDL HEADER, with the 
17   * fields enclosed by brackets "[]" replaced with your 
18   * own identifying information: Portions Copyright [yyyy] 
19   * [name of copyright owner]
20   */
21  
22  /*
23   * @(#)ComparisonTerm.java  1.8 05/08/29
24   *
25   * Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved.
26   */
27  
28  package javax.mail.search;
29  
30  /**
31   * This class models the comparison operator. This is an abstract
32   * class; subclasses implement comparisons for different datatypes.
33   *
34   * @author Bill Shannon
35   * @author John Mani
36   */
37  public abstract class ComparisonTerm extends SearchTerm   {
38      public static final int LE = 1;
39      public static final int LT = 2;
40      public static final int EQ = 3;
41      public static final int NE = 4;
42      public static final int GT = 5;
43      public static final int GE = 6;
44  
45      /**
46       * The comparison.
47       *
48       * @serial
49       */
50      protected int comparison;
51  
52      private static final long serialVersionUID = 1456646953666474308L;
53  
54      /**
55       * Equality comparison.
56       */
57      public boolean equals(Object   obj) {
58      if (!(obj instanceof ComparisonTerm  ))
59          return false;
60      ComparisonTerm   ct = (ComparisonTerm  )obj;
61      return ct.comparison == this.comparison;
62      }
63  
64      /**
65       * Compute a hashCode for this object.
66       */
67      public int hashCode() {
68      return comparison;
69      }
70  }
71
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