org.rivetlogic.scar.comparator
Class MapKeyComparator

java.lang.Object
  org.rivetlogic.scar.comparator.MapKeyComparator

All Implemented Interfaces:

java.util.Comparator<java.lang.Object>

public class MapKeyComparator
extends java.lang.Object
implements java.util.Comparator<java.lang.Object>

Comparator that uses Reflection to compare by values of a key in a Java map

Author:

Rivet Logic Corporation

Constructor Summary

MapKeyComparator(java.lang.String mapName, java.lang.Object sortBy, boolean ascending)

Method Summary

int	compare(java.lang.Object a, java.lang.Object b)
java.lang.String	getMapName()
java.lang.Object	getSortBy()
protected static java.lang.reflect.Field	getSortingField(java.lang.Object a, java.lang.String fieldName)
protected static java.lang.reflect.Method	getSortingMethod(java.lang.Object a, java.lang.String fieldName)
protected java.lang.Object	getSortingObject(java.lang.Object obj)
boolean	isAscending()
void	setAscending(boolean ascending)
void	setMapName(java.lang.String mapName)
void	setSortBy(java.lang.Object sortBy)

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

MapKeyComparator

public MapKeyComparator(java.lang.String mapName,
                        java.lang.Object sortBy,
                        boolean ascending)

Method Detail

compare

public int compare(java.lang.Object a,
                   java.lang.Object b)

Specified by:

compare in interface java.util.Comparator<java.lang.Object>

getSortingObject

protected java.lang.Object getSortingObject(java.lang.Object obj)

getSortingField

protected static java.lang.reflect.Field getSortingField(java.lang.Object a,
                                                         java.lang.String fieldName)
                                                  throws java.lang.SecurityException,
                                                         java.lang.NoSuchFieldException

Throws:

java.lang.SecurityException

java.lang.NoSuchFieldException

getSortingMethod

protected static java.lang.reflect.Method getSortingMethod(java.lang.Object a,
                                                           java.lang.String fieldName)
                                                    throws java.lang.SecurityException,
                                                           java.lang.NoSuchMethodException

Throws:

java.lang.SecurityException

java.lang.NoSuchMethodException

getSortBy

public java.lang.Object getSortBy()

setSortBy

public void setSortBy(java.lang.Object sortBy)

isAscending

public boolean isAscending()

setAscending

public void setAscending(boolean ascending)

getMapName

public java.lang.String getMapName()

setMapName

public void setMapName(java.lang.String mapName)