org.eclipse.gemini.blueprint.extender.internal.dependencies.shutdown

Class ShutdownSorter

java.lang.Object

org.eclipse.gemini.blueprint.extender.internal.dependencies.shutdown.ShutdownSorter

public abstract class ShutdownSorter
extends java.lang.Object

Utility for sorting out bundles during shutdown based on the OSGi 4.2 shutdown algorithm. Please see section 121.3.11 in OSGi 4.2 release. Since sorting out the entire graph from the beginning is difficult (shutting down some bundles, might allow others to be destroyed), this utility is meant to be called multiple times until the list is being depleted.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	ShutdownSorter.ReverseBundleIdSorter

Field Summary

Fields

Modifier and Type	Field and Description
private static org.apache.commons.logging.Log	log

Constructor Summary

Constructors

Constructor and Description
ShutdownSorter()

Method Summary

Modifier and Type	Method and Description
private static org.osgi.framework.Bundle	findBundleBasedOnServices(java.util.Collection<org.osgi.framework.Bundle> managedBundles)
static java.util.Collection<org.osgi.framework.Bundle>	getBundles(java.util.Collection<org.osgi.framework.Bundle> managedBundles) Sorts the given bundles.
private static long	getHighestServiceId(org.osgi.framework.Bundle bundle)
private static int	getRegisteredServiceInUseLowestRanking(org.osgi.framework.Bundle bundle)
private static java.util.List<org.osgi.framework.Bundle>	unusedBundles(java.util.Collection<org.osgi.framework.Bundle> unsorted)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

private static final org.apache.commons.logging.Log log

Constructor Detail

ShutdownSorter

public ShutdownSorter()

Method Detail

getBundles

public static java.util.Collection<org.osgi.framework.Bundle> getBundles(java.util.Collection<org.osgi.framework.Bundle> managedBundles)

Sorts the given bundles. The method extracts the bundles about to be destroyed from the given lists and returns them to the user. Since shutting down a bundle can influence the destruction of the others, this method should be called after all the returned bundles have been destroyed until the list is empty.

Parameters:

managedBundles -

Returns:

sorted collection of Bundles

unusedBundles

private static java.util.List<org.osgi.framework.Bundle> unusedBundles(java.util.Collection<org.osgi.framework.Bundle> unsorted)

findBundleBasedOnServices

private static org.osgi.framework.Bundle findBundleBasedOnServices(java.util.Collection<org.osgi.framework.Bundle> managedBundles)

getRegisteredServiceInUseLowestRanking

private static int getRegisteredServiceInUseLowestRanking(org.osgi.framework.Bundle bundle)

getHighestServiceId

private static long getHighestServiceId(org.osgi.framework.Bundle bundle)