org.javamoney.moneta.spi

Class PriorityServiceComparator

java.lang.Object

org.javamoney.moneta.spi.PriorityServiceComparator

All Implemented Interfaces:

Serializable, Comparator<Object>

public class PriorityServiceComparator
extends Object
implements Comparator<Object>, Serializable

Comparator implementation for ordering services loaded based on their increasing priority values.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
int	compare(Object o1, Object o2)
static PriorityServiceComparator	getInstance() Get the shared instance of the comparator.
static int	getPriority(Class type) Checks the given type optionally annotated with a @Priority.
static int	getPriority(Object o) Checks the given instance for a @Priority annotation.

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

Method Detail

getInstance

public static PriorityServiceComparator getInstance()

Get the shared instance of the comparator.

Returns:

the shared instance, never null.

compare

public int compare(Object o1,
                   Object o2)

Specified by:

compare in interface Comparator<Object>

getPriority

public static int getPriority(Object o)

Checks the given instance for a @Priority annotation. If present the annotation's value is evaluated. If no such annotation is present, a default priority 1 is returned.

Parameters:

o - the instance, not null.

Returns:

a priority, by default 1.

getPriority

public static int getPriority(Class type)

Checks the given type optionally annotated with a @Priority. If present the annotation's value is evaluated. If no such annotation is present, a default priority 1 is returned.

Parameters:

type - the type, not null.

Returns:

a priority, by default 1.