com.redhat.rhn.common.util

Class DynamicComparator

java.lang.Object

com.redhat.rhn.common.util.DynamicComparator

All Implemented Interfaces:

java.util.Comparator

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

DynamicComparator - simple class that can be used with Collections.sort(list, comparator). Create an instance of this class with the passed in fieldname and it will create a Comparator that will compare two objects based on the field passed into the Constructor. Usefull if you have a Collection of Beans that you want to sort based on a specific property.

Constructor Summary

Constructors

Constructor and Description
DynamicComparator(java.lang.String fieldNameIn, boolean ascending) Create a new DynamicComparator that can be used to compare indivdual beans..
DynamicComparator(java.lang.String fieldNameIn, java.lang.String sortOrder) Create a new DynamicComparator that can be used to compare indivdual beans..

Method Summary

Modifier and Type	Method and Description
int	compare(java.lang.Object o1, java.lang.Object o2)
java.lang.String	getFieldName()

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

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

DynamicComparator

public DynamicComparator(java.lang.String fieldNameIn,
                         java.lang.String sortOrder)

Create a new DynamicComparator that can be used to compare indivdual beans..

Parameters:

fieldNameIn - Name of field you want to use in the bean to compare to

sortOrder - Should be either RequestContext.LIST_SORT_ASC or RequestContext.LIST_SORT_DESC

DynamicComparator

public DynamicComparator(java.lang.String fieldNameIn,
                         boolean ascending)

Create a new DynamicComparator that can be used to compare indivdual beans..

Parameters:

fieldNameIn - Name of field you want to use in the bean to compare to

ascending - true for ascending order

Method Detail

compare

public int compare(java.lang.Object o1,
                   java.lang.Object o2)

Specified by:

compare in interface java.util.Comparator

getFieldName

public java.lang.String getFieldName()

Returns:

Returns the fieldName.