theory.smart.ebusiness.shoppingadvisor
Class SuggestionItemComparator

java.lang.Object
  |
  +--theory.smart.ebusiness.shoppingadvisor.SuggestionItemComparator

public class SuggestionItemComparator

extends java.lang.Object

implements com.sun.java.util.collections.Comparator

Compares two Suggestion by obtaining their items and comparing the items' primary keys.

See Also:

Suggestion, Item

Method Summary

int	compare(java.lang.Object arg1, java.lang.Object arg2) Compares two Suggestion
static SuggestionItemComparator	getInstance() A caching mechanism to improve the performance while instantiating SuggestionItemComparators

Methods inherited from class java.lang.Object

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

Method Detail

compare

public int compare(java.lang.Object arg1,
                   java.lang.Object arg2)

Compares two Suggestion

Specified by:

compare in interface com.sun.java.util.collections.Comparator

Returns:

arg1.getItem().getPrimaryKey().compareTo( arg2.getItem().getPrimaryKey())

getInstance

public static SuggestionItemComparator getInstance()

A caching mechanism to improve the performance while instantiating SuggestionItemComparators

Returns:

a new instance if no instance exists or an existing instance