toolbox.app
Class MapComparator

java.lang.Object
  toolbox.app.MapComparator

All Implemented Interfaces:

java.util.Comparator

Direct Known Subclasses:

AppBeanComparator

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

Comparator implementation to compare the values contained within Maps.

It can be used to sort Lists that store collections of Maps.

Constructor Summary

MapComparator(java.lang.Object key, java.lang.String order)
Construct a new instance.

Method Summary

int	compare(java.lang.Object obj1, java.lang.Object obj2) Compare the values mapped to the specified key.

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

MapComparator

public MapComparator(java.lang.Object key,
                     java.lang.String order)

Construct a new instance.

Parameters:

key - Key that must be used to obtain values from the Map

order - String indicating the sort order. Specify "asc" for ascending order and "desc" for descending order.

Method Detail

compare

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

Compare the values mapped to the specified key.

Specified by:

compare in interface java.util.Comparator

Parameters:

obj1 - First Map

obj2 - Second Map

Returns:

int indicating the result of the comparison.