scheduler.db.instructordb
Class TimePreferenceComparator

java.lang.Object
  scheduler.db.instructordb.TimePreferenceComparator

All Implemented Interfaces:

java.util.Comparator

public class TimePreferenceComparator
extends java.lang.Object
implements java.util.Comparator

TimePreferenceCompare

Author:

Leland Garofalo

Constructor Summary

TimePreferenceComparator()

Method Summary

int	compare(java.lang.Object obj1, java.lang.Object obj2) Compare method to compare TimePreferences

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

TimePreferenceComparator

public TimePreferenceComparator()

Method Detail

compare

public int compare(java.lang.Object obj1,
                   java.lang.Object obj2)

Compare method to compare TimePreferences

Specified by:

compare in interface java.util.Comparator

Parameters:

obj1 - Object TimePreference

obj2 - Object TimePreference

Returns:

int 1, 0, or -1 depending if obj1 is greater,equal,or less than obj2

 // ** Pre and Post conditions ** //

 Pre:

 // obj1 can not be null
 obj1 != nil

 &&

 // obj2 can not be null
 obj2 != nil

 &&

 // obj1 and obj2 must be of type TimePreference
 obj1 instanceof(TimePreference) && obj2 instanceof(TimePreference)


 // The return must be 1,0,-1
 return <= 1 && return >= -1