@Override
public boolean ungetService(AbstractBundle bundleState, ServiceState serviceState) {
serviceState.ungetScopedValue(bundleState);
int useCount = bundleState.removeServiceInUse(serviceState);
if (useCount == 0) serviceState.removeUsingBundle(bundleState);
return useCount >= 0;
}
@Override
public Object getService(AbstractBundle bundleState, ServiceState serviceState) {
// If the service has been unregistered, null is returned.
if (serviceState.isUnregistered()) return null;
// Add the given service ref to the list of used services
bundleState.addServiceInUse(serviceState);
serviceState.addUsingBundle(bundleState);
Object value = serviceState.getScopedValue(bundleState);
// If the factory returned an invalid value
// restore the service usage counts
if (value == null) {
bundleState.removeServiceInUse(serviceState);
serviceState.removeUsingBundle(bundleState);
}
return value;
}