org.apache.felix.prefs.impl
Class PreferencesManager

java.lang.Object
  org.apache.felix.prefs.impl.PreferencesManager

All Implemented Interfaces:

EventListener, BackingStoreManager, BundleActivator, BundleListener, ServiceFactory

public class PreferencesManager
extends Object
implements BundleActivator, BundleListener, ServiceFactory, BackingStoreManager

This activator registers itself as a service factory for the preferences service.

Field Summary

protected BundleContext	context The bundle context.
protected BackingStore	defaultStore The default store which is used if no service can be found.
protected ServiceTracker	logTracker The service tracker for the log service.
protected Map	services The map of already created services.
protected ServiceTracker	storeTracker The backing store service tracker.
protected int	storeTrackingCount Tracking count for the store tracker to detect changes.

Constructor Summary

PreferencesManager()

Method Summary

void	bundleChanged(BundleEvent event)
protected void	cleanupStore(BackingStore store) Clean up the store and remove preferences for deleted bundles.
Object	getService(Bundle bundle, ServiceRegistration reg)
BackingStore	getStore() Return the current backing store.
protected void	log(int level, String message, Throwable t)
protected void	save(PreferencesServiceImpl service) Save all preferences for this service.
void	start(BundleContext context)
void	stop(BundleContext context)
void	ungetService(Bundle bundle, ServiceRegistration reg, Object s)

Methods inherited from class java.lang.Object

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

Field Detail

services

protected final Map services

The map of already created services. For each client bundle a new service is created.

context

protected BundleContext context

The bundle context.

storeTracker

protected ServiceTracker storeTracker

The backing store service tracker.

logTracker

protected ServiceTracker logTracker

The service tracker for the log service.

defaultStore

protected BackingStore defaultStore

The default store which is used if no service can be found.

storeTrackingCount

protected int storeTrackingCount

Tracking count for the store tracker to detect changes.

Constructor Detail

PreferencesManager

public PreferencesManager()

Method Detail

bundleChanged

public void bundleChanged(BundleEvent event)

Specified by:

bundleChanged in interface BundleListener

See Also:

BundleListener.bundleChanged(org.osgi.framework.BundleEvent)

start

public void start(BundleContext context)
           throws Exception

Specified by:

start in interface BundleActivator

Throws:

Exception

See Also:

BundleActivator.start(org.osgi.framework.BundleContext)

stop

public void stop(BundleContext context)
          throws Exception

Specified by:

stop in interface BundleActivator

Throws:

Exception

See Also:

BundleActivator.stop(org.osgi.framework.BundleContext)

getService

public Object getService(Bundle bundle,
                         ServiceRegistration reg)

Specified by:

getService in interface ServiceFactory

See Also:

ServiceFactory.getService(org.osgi.framework.Bundle, org.osgi.framework.ServiceRegistration)

ungetService

public void ungetService(Bundle bundle,
                         ServiceRegistration reg,
                         Object s)

Specified by:

ungetService in interface ServiceFactory

See Also:

ServiceFactory.ungetService(org.osgi.framework.Bundle, org.osgi.framework.ServiceRegistration, java.lang.Object)

save

protected void save(PreferencesServiceImpl service)

Save all preferences for this service.

Parameters:

service -

log

protected void log(int level,
                   String message,
                   Throwable t)

getStore

public BackingStore getStore()

Description copied from interface: BackingStoreManager

Return the current backing store.

Specified by:

getStore in interface BackingStoreManager

See Also:

BackingStoreManager.getStore()

cleanupStore

protected void cleanupStore(BackingStore store)

Clean up the store and remove preferences for deleted bundles.

Parameters:

store -