Package org.adempiere.base.ds

Class ServiceRankingComparator

java.lang.Object

org.adempiere.base.ds.ServiceRankingComparator

All Implemented Interfaces:

Serializable, Comparator<org.osgi.framework.ServiceReference<?>>

public final class ServiceRankingComparator
extends Object
implements Comparator<org.osgi.framework.ServiceReference<?>>, Serializable

Service Reference Comparator. This comparator follows OSGi Ranking policy.

Author:

hengsin

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static ServiceRankingComparator	INSTANCE	share service ranking comparator instance

Method Summary

Modifier and Type	Method	Description
int	compare(org.osgi.framework.ServiceReference<?> serviceReference1, org.osgi.framework.ServiceReference<?> serviceReference2)	Compares two service reference.

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 Detail

INSTANCE

public static final ServiceRankingComparator INSTANCE

share service ranking comparator instance

Method Detail

compare

public int compare(org.osgi.framework.ServiceReference<?> serviceReference1,
                   org.osgi.framework.ServiceReference<?> serviceReference2)

Compares two service reference.

Specified by:

compare in interface Comparator<org.osgi.framework.ServiceReference<?>>

Parameters:

serviceReference1 - service reference 1

serviceReference2 - service reference 2

Returns:

-1 if service reference 1 service.ranking value is higher than service reference 2, 1 otherwise. (i.e for sorting in descending order of service.ranking value)

See Also:

Comparator.compare(java.lang.Object, java.lang.Object)