org.osgi.framework
public interface BundleActivator
BundleActivator
is an interface that may be implemented when a
bundle is started or stopped. The Framework can create instances of a
bundle's BundleActivator
as required. If an instance's
BundleActivator.start
method executes successfully, it is
guaranteed that the same instance's BundleActivator.stop
method will be called when the bundle is to be stopped. The Framework must
not concurrently call a BundleActivator
object.
BundleActivator
is specified through the
Bundle-Activator
Manifest header. A bundle can only specify a
single BundleActivator
in the Manifest file. Fragment bundles
must not have a BundleActivator
. The form of the Manifest
header is:
Bundle-Activator: class-name
where class-name
is a fully qualified Java classname.
The specified BundleActivator
class must have a public
constructor that takes no parameters so that a BundleActivator
object can be created by Class.newInstance()
.
Version: $Revision: 1.14 $
UNKNOWN:
Method Summary | |
---|---|
void | start(BundleContext context)
Called when this bundle is started so the Framework can perform the
bundle-specific activities necessary to start this bundle. |
void | stop(BundleContext context)
Called when this bundle is stopped so the Framework can perform the
bundle-specific activities necessary to stop the bundle. |
This method must complete and return to its caller in a timely manner.
Parameters: context The execution context of the bundle being started.
Throws: java.lang.Exception If this method throws an exception, this bundle is marked as stopped and the Framework will remove this bundle's listeners, unregister all services registered by this bundle, and release all services used by this bundle.
BundleActivator.start
method started. There should be no active threads that were started by
this bundle when this bundle returns. A stopped bundle must not call any
Framework objects.
This method must complete and return to its caller in a timely manner.
Parameters: context The execution context of the bundle being stopped.
Throws: java.lang.Exception If this method throws an exception, the bundle is still marked as stopped, and the Framework will remove the bundle's listeners, unregister all services registered by the bundle, and release all services used by the bundle.