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java.lang.Objectorg.eclipse.osgi.framework.internal.core.StartLevelManager
public class StartLevelManager
StartLevel service implementation for the OSGi specification. Framework service which allows management of framework and bundle startlevels. This class also acts as the StartLevel service factory class, providing StartLevel objects to those requesting org.osgi.service.startlevel.StartLevel service. If present, there will only be a single instance of this service registered in the framework.
Field Summary | |
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protected static EventManager |
eventManager
|
protected static Framework |
framework
|
protected int |
frameworkBeginningStartLevel
The framework beginning startlevel. |
protected int |
initialBundleStartLevel
The initial bundle start level for newly installed bundles |
protected static EventListeners |
startLevelListeners
|
Constructor Summary | |
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protected |
StartLevelManager(Framework framework)
This constructor is called by the Framework |
Method Summary | |
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protected void |
cleanup()
|
protected void |
decFWSL(int decToSL,
AbstractBundle[] shutdown)
Decrement the active startlevel by one |
void |
dispatchEvent(java.lang.Object listener,
java.lang.Object listenerObject,
int eventAction,
java.lang.Object eventObject)
This method is the call back that is called once for each listener. |
int |
getBundleStartLevel(Bundle bundle)
Return the assigned start level value for the specified Bundle. |
int |
getFrameworkStartLevel()
Return the initial start level used when the framework is started. |
int |
getInitialBundleStartLevel()
Return the initial start level value that is assigned to a Bundle when it is first installed. |
java.lang.Object |
getService(Bundle owner,
ServiceRegistration registration)
Returns a StartLevel object, created for each requesting bundle. |
int |
getStartLevel()
Return the active start level value of the Framework. |
protected void |
incFWSL(int incToSL,
AbstractBundle callerBundle)
Increment the active startlevel by one |
protected void |
initialize()
|
boolean |
isBundleActivationPolicyUsed(Bundle bundle)
|
boolean |
isBundlePersistentlyStarted(Bundle bundle)
Return the persistent state of the specified bundle. |
boolean |
isSettingStartLevel()
|
protected void |
launch(int startlevel)
Internal method to allow the framework to be launched synchronously by calling the StartLevelListener worker calls directly This method does not return until all bundles that should be started are started |
protected void |
saveActiveStartLevel(int newSL)
This method is used within the package to save the actual active startlevel value for the framework. |
protected void |
setBundleSL(org.eclipse.osgi.framework.internal.core.StartLevelEvent startLevelEvent)
Set the bundle's startlevel to the new value This may cause the bundle to start or stop based on the active framework startlevel |
void |
setBundleStartLevel(Bundle bundle,
int newSL)
Assign a start level value to the specified Bundle. |
void |
setInitialBundleStartLevel(int startlevel)
Set the initial start level value that is assigned to a Bundle when it is first installed. |
protected void |
setStartLevel(int newSL)
|
void |
setStartLevel(int newSL,
Bundle callerBundle)
Modify the active start level of the Framework. |
protected void |
shutdown()
Internal method to shut down the framework synchronously by setting the startlevel to zero and calling the StartLevelListener worker calls directly This method does not return until all bundles are stopped and the framework is shut down. |
void |
ungetService(Bundle owner,
ServiceRegistration registration,
java.lang.Object service)
Does nothing, as the StartLevel bundle does not keep references to StartLevel objects. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected static Framework framework
protected static EventManager eventManager
protected static EventListeners startLevelListeners
protected int frameworkBeginningStartLevel
protected int initialBundleStartLevel
Constructor Detail |
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protected StartLevelManager(Framework framework)
Method Detail |
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protected void initialize()
protected void cleanup()
public int getInitialBundleStartLevel()
setInitialBundleStartLevel(int)
public int getFrameworkStartLevel()
public void setInitialBundleStartLevel(int startlevel)
The initial bundle start level will be set to the specified start level. The initial bundle start level value will be persistently recorded by the Framework.
When a Bundle is installed via BundleContext.installBundle, it is assigned the initial bundle start level value.
The default initial bundle start level value is 1 unless this method has been called to assign a different initial bundle start level value.
This method does not change the start level values of installed bundles.
startlevel
- The initial start level for newly installed bundles.
java.lang.IllegalArgumentException
- If the specified start level is less than or
equal to zero.
java.lang.SecurityException
- if the caller does not have the
AdminPermission and the Java runtime environment supports
permissions.public int getStartLevel()
public void setStartLevel(int newSL, Bundle callerBundle)
The Framework will move to the requested start level. This method will return immediately to the caller and the start level change will occur asynchronously on another thread.
If the specified start level is higher than the active start level, the Framework will continue to increase the start level until the Framework has reached the specified start level, starting bundles at each start level which are persistently marked to be started as described in the Bundle.start method. At each intermediate start level value on the way to and including the target start level, the framework must:
If the specified start level is lower than the active start level, the Framework will continue to decrease the start level until the Framework has reached the specified start level stopping bundles at each start level as described in the Bundle.stop method except that their persistently recorded state indicates that they must be restarted in the future. At each intermediate start level value on the way to and including the specified start level, the framework must:
If the specified start level is equal to the active start level, then no bundles are started or stopped, however, the Framework must broadcast a Framework event of type FrameworkEvent.STARTLEVEL_CHANGED to announce it has finished moving to the specified start level. This event may arrive before the this method return.
newSL
- The requested start level for the Framework.
java.lang.IllegalArgumentException
- If the specified start level is less than or
equal to zero.
java.lang.SecurityException
- If the caller does not have the
AdminPermission and the Java runtime environment supports
permissions.protected void setStartLevel(int newSL)
protected void launch(int startlevel)
protected void shutdown()
protected void saveActiveStartLevel(int newSL)
newSL
- - the new startlevel to savepublic boolean isBundlePersistentlyStarted(Bundle bundle)
This method returns the persistent state of a bundle. The persistent state of a bundle indicates whether a bundle is persistently marked to be started when it's start level is reached.
java.lang.IllegalArgumentException
- If the specified bundle has been uninstalled.public boolean isBundleActivationPolicyUsed(Bundle bundle)
public int getBundleStartLevel(Bundle bundle)
bundle
- The target bundle.
java.lang.IllegalArgumentException
- If the specified bundle has been uninstalled.public void setBundleStartLevel(Bundle bundle, int newSL)
The specified bundle will be assigned the specified start level. The start level value assigned to the bundle will be persistently recorded by the Framework. If the new start level for the bundle is lower than or equal to the active start level of the Framework, the Framework will start the specified bundle as described in the Bundle.start method if the bundle is persistently marked to be started. The actual starting of this bundle must occur asynchronously. If the new start level for the bundle is higher than the active start level of the Framework, the Framework will stop the specified bundle as described in the Bundle.stop method except that the persistently recorded state for the bundle indicates that the bundle must be restarted in the future. The actual stopping of this bundle must occur asynchronously.
bundle
- The target bundle.newSL
- The new start level for the specified Bundle.
java.lang.IllegalArgumentException
- If the specified bundle has been uninstalled or
if the specified start level is less than or equal to zero, or the specified bundle is
the system bundle.
java.lang.SecurityException
- if the caller does not have the
AdminPermission and the Java runtime environment supports
permissions.public void dispatchEvent(java.lang.Object listener, java.lang.Object listenerObject, int eventAction, java.lang.Object eventObject)
dispatchEvent
in interface EventDispatcher
listener
- This listener must be cast to the appropriate listener
class for the events created by this source and the appropriate listener method
must then be called.listenerObject
- This is the optional object that was passed to
EventListeners.addListener when the listener was added to the EventListeners.eventAction
- This value was passed to the ListenerQueue object via one of its
dispatchEvent* method calls. It can provide information (such
as which listener method to call) so that this method
can complete the delivery of the event to the listener.eventObject
- This object was passed to the ListenerQueue object via one of its
dispatchEvent* method calls. This object was created by the event source and
is passed to this method. It should contain all the necessary information (such
as what event object to pass) so that this method
can complete the delivery of the event to the listener.protected void incFWSL(int incToSL, AbstractBundle callerBundle)
protected void decFWSL(int decToSL, AbstractBundle[] shutdown)
decToSL
- - the startlevel value to set the framework toprotected void setBundleSL(org.eclipse.osgi.framework.internal.core.StartLevelEvent startLevelEvent)
startLevelEvent
- - the event requesting change in bundle startlevelpublic java.lang.Object getService(Bundle owner, ServiceRegistration registration)
getService
in interface ServiceFactory
owner
- bundle, requested to get StartLevel service.registration
- ServiceRegistration of the StartLevel service
BundleContext.getService(org.osgi.framework.ServiceReference)
public void ungetService(Bundle owner, ServiceRegistration registration, java.lang.Object service)
ungetService
in interface ServiceFactory
owner
- bundle requesting to unget StartLevel service.registration
- ServiceRegistration of StartLevelservice
- Service object, already been got by this bundle.BundleContext.ungetService(org.osgi.framework.ServiceReference)
public boolean isSettingStartLevel()
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