Package org.moeaframework.util

Class FixedOrderComparator<T>

java.lang.Object

org.moeaframework.util.FixedOrderComparator<T>

Type Parameters:

T - the type of elements being sorted

All Implemented Interfaces:

Comparator<T>

public class FixedOrderComparator<T>
extends Object
implements Comparator<T>

Sorts elements according to a fixed order. The order is defined by mapping elements to integers and sorting based on the numeric value. Elements not defined in the mapping are always sorted last.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	LAST	Constant used to place an element at the end of the sorted collection.

Constructor Summary

Constructors

Constructor	Description
FixedOrderComparator(Map<T,Integer> order)	Creates a new fixed order comparator.

Method Summary

Modifier and Type	Method	Description
int	compare(T obj1, T obj2)

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, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Details

LAST

public static final int LAST

Constant used to place an element at the end of the sorted collection. If multiple elements map to this value, their ordering is undefined.

See Also:

• Constant Field Values

Constructor Details

FixedOrderComparator

public FixedOrderComparator(Map<T,Integer> order)

Creates a new fixed order comparator.

Parameters:

order - mapping defining the ordering of elements

Method Details

compare

public int compare(T obj1,
 T obj2)

Specified by:

compare in interface Comparator<T>