1. /*

  2.  * Copyright 2002 Sun Microsystems, Inc. All rights reserved.

  3.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  4.  */

  5. 

  6. package javax.mail.search;

  7. 

  8. /**

  9.  * This class models the comparison operator. This is an abstract

  10.  * class; subclasses implement comparisons for different datatypes.

  11.  *

  12.  * @author Bill Shannon

  13.  * @author John Mani

  14.  */

  15. public abstract class ComparisonTerm extends SearchTerm {

  16.     public static final int LE = 1;

  17.     public static final int LT = 2;

  18.     public static final int EQ = 3;

  19.     public static final int NE = 4;

  20.     public static final int GT = 5;

  21.     public static final int GE = 6;

  22. 

  23.     /**

  24.      * The comparison.

  25.      *

  26.      * @serial

  27.      */

  28.     protected int comparison;

  29. 

  30.     /**

  31.      * Equality comparison.

  32.      */

  33.     public boolean equals(Object obj) {

  34. 	if (!(obj instanceof ComparisonTerm))

  35. 	    return false;

  36. 	ComparisonTerm ct = (ComparisonTerm)obj;

  37. 	return ct.comparison == this.comparison;

  38.     }

  39. 

  40.     /**

  41.      * Compute a hashCode for this object.

  42.      */

  43.     public int hashCode() {

  44. 	return comparison;

  45.     }

  46. }