Class ServiceRegistrationImpl

java.lang.Object

org.apache.felix.framework.ServiceRegistrationImpl

All Implemented Interfaces:

ServiceRegistration

class ServiceRegistrationImpl
extends Object
implements ServiceRegistration

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	ServiceRegistrationImpl.ServiceFactoryPrivileged	This simple class is used to ensure that when a service factory is called, that no other classes on the call stack interferes with the permissions of the factory itself.
(package private) class	ServiceRegistrationImpl.ServiceReferenceImpl
private class	ServiceRegistrationImpl.ServiceReferenceMap

Field Summary

Fields

Modifier and Type	Field	Description
private final Bundle	m_bundle
private final String[]	m_classes
private ServiceFactory	m_factory
private boolean	m_isUnregistering
private Map<String,Object>	m_propMap
private final ServiceRegistrationImpl.ServiceReferenceImpl	m_ref
private final ServiceRegistry	m_registry
private final Long	m_serviceId
private Object	m_svcObj

Constructor Summary

Constructors

Constructor	Description
ServiceRegistrationImpl(ServiceRegistry registry, Bundle bundle, String[] classes, Long serviceId, Object svcObj, Dictionary dict)

Method Summary

Modifier and Type	Method	Description
private Object	getFactoryUnchecked(Bundle bundle)
(package private) Object	getProperty(String key)
private String[]	getPropertyKeys()
ServiceReference	getReference()	Returns a ServiceReference object for a service being registered.
(package private) Object	getService()	This method provides direct access to the associated service object; it generally should not be used by anyone other than the service registry itself.
(package private) Object	getService(Bundle acqBundle)
private Bundle[]	getUsingBundles()
private void	initializeProperties(Dictionary<String,Object> dict)
protected void	invalidate()
private boolean	isClassAccessible(Class clazz)	This method determines if the class loader of the service object has access to the specified class.
protected boolean	isValid()
void	setProperties(Dictionary dict)	Updates the properties associated with a service.
private void	ungetFactoryUnchecked(Bundle bundle, Object svcObj)
(package private) void	ungetService(Bundle relBundle, Object svcObj)
void	unregister()	Unregisters a service.

Methods inherited from class Object

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

Field Details

m_registry

private final ServiceRegistry m_registry

m_bundle

private final Bundle m_bundle

m_classes

private final String[] m_classes

m_serviceId

private final Long m_serviceId

m_svcObj

private volatile Object m_svcObj

m_factory

private volatile ServiceFactory m_factory

m_propMap

private volatile Map<String,Object> m_propMap

m_ref

private final ServiceRegistrationImpl.ServiceReferenceImpl m_ref

m_isUnregistering

private volatile boolean m_isUnregistering

Constructor Details

ServiceRegistrationImpl

public ServiceRegistrationImpl(ServiceRegistry registry,
 Bundle bundle,
 String[] classes,
 Long serviceId,
 Object svcObj,
 Dictionary dict)

Method Details

isValid

protected boolean isValid()

invalidate

protected void invalidate()

getReference

public ServiceReference getReference()

Description copied from interface: ServiceRegistration

Returns a ServiceReference object for a service being registered.

The ServiceReference object may be shared with other bundles.

Specified by:

getReference in interface ServiceRegistration

Returns:

ServiceReference object.

setProperties

public void setProperties(Dictionary dict)

Description copied from interface: ServiceRegistration

Updates the properties associated with a service.

The Constants.OBJECTCLASS, Constants.SERVICE_BUNDLEID, Constants.SERVICE_ID and Constants.SERVICE_SCOPE keys cannot be modified by this method. These values are set by the Framework when the service is registered in the OSGi environment.

The following steps are required to modify service properties:

1. The service's properties are replaced with the provided properties.
2. A service event of type ServiceEvent.MODIFIED is fired.

Specified by:

setProperties in interface ServiceRegistration

Parameters:

dict - The properties for this service. See Constants for a list of standard service property keys. Changes should not be made to this object after calling this method. To update the service's properties this method should be called again.

unregister

public void unregister()

Description copied from interface: ServiceRegistration

Unregisters a service. Remove a ServiceRegistration object from the Framework service registry. All ServiceReference objects associated with this ServiceRegistration object can no longer be used to interact with the service once unregistration is complete.

The following steps are required to unregister a service:

1. The service is removed from the Framework service registry so that it can no longer be obtained.
2. A service event of type ServiceEvent.UNREGISTERING is fired so that bundles using this service can release their use of the service. Once delivery of the service event is complete, the ServiceReference objects for the service may no longer be used to get a service object for the service.
3. For each bundle whose use count for this service is greater than zero:
   • The bundle's use count for this service is set to zero.
   • If the service was registered with a ServiceFactory object, the ServiceFactory.ungetService method is called to release the service object for the bundle.

Specified by:

unregister in interface ServiceRegistration

See Also:

• BundleContext.ungetService(ServiceReference)
• ServiceFactory.ungetService(Bundle, ServiceRegistration, Object)

isClassAccessible

private boolean isClassAccessible(Class clazz)

This method determines if the class loader of the service object has access to the specified class.

Parameters:

clazz - the class to test for reachability.

Returns:

true if the specified class is reachable from the service object's class loader, false otherwise.

getProperty

Object getProperty(String key)

getPropertyKeys

private String[] getPropertyKeys()

getUsingBundles

private Bundle[] getUsingBundles()

getService

Object getService()

This method provides direct access to the associated service object; it generally should not be used by anyone other than the service registry itself.

Returns:

The service object associated with the registration.

getService

Object getService(Bundle acqBundle)

ungetService

void ungetService(Bundle relBundle,
 Object svcObj)

initializeProperties

private void initializeProperties(Dictionary<String,Object> dict)

getFactoryUnchecked

private Object getFactoryUnchecked(Bundle bundle)

ungetFactoryUnchecked

private void ungetFactoryUnchecked(Bundle bundle,
 Object svcObj)