org.apache.xbean.kernel.standard
Class ServiceManagerRegistry

java.lang.Object
  org.apache.xbean.kernel.standard.ServiceManagerRegistry

public class ServiceManagerRegistry
extends Object

The StandardServiceRegistry manages the registration of ServiceManagers for the kernel.

Since:

2.0

Author:

Dain Sundstrom

Constructor Summary

ServiceManagerRegistry(ServiceManagerFactory serviceManagerFactory)
Creates a ServiceManagerRegistry that uses the specified service manager factory to create new service managers.

Method Summary

void	destroy() Stops and destroys all services service managers.
Object	getService(Class type) Gets the first registed and running service that is an instance of the specified type, or null if no instances of the specified type are running.
ServiceManager	getServiceManager(Class type) Gets the first registered service manager that creates an instance of the specified type, or null if no service managers create an instance of the specified type.
ServiceManager	getServiceManager(ServiceName serviceName) Gets the service manager registered under the specified name.
List	getServiceManagers(Class type) Gets all service managers that create an instances of the specified type, or an empty list if no service managers create an instance of the specified type.
List	getServices(Class type) Gets the all of running service that are an instances of the specified type, or an empty list if no instances of the specified type are running.
boolean	isRegistered(ServiceName serviceName) Determines if there is a service registered under the specified name.
void	registerService(ServiceName serviceName, ServiceFactory serviceFactory) Creates a ServiceManager and registers it under the specified name.
void	unregisterService(ServiceName serviceName, StopStrategy stopStrategy) Stops and destorys the ServiceManager and then unregisters it.

Methods inherited from class java.lang.Object

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

Constructor Detail

ServiceManagerRegistry

public ServiceManagerRegistry(ServiceManagerFactory serviceManagerFactory)

Creates a ServiceManagerRegistry that uses the specified service manager factory to create new service managers.

Parameters:

serviceManagerFactory - the factory for new service managers

Method Detail

destroy

public void destroy()
             throws KernelErrorsError

Stops and destroys all services service managers. This method will FORCE stop the services if necessary.

Throws:

KernelErrorsError - if any errors occur while stopping or destroying the service managers

isRegistered

public boolean isRegistered(ServiceName serviceName)

Determines if there is a service registered under the specified name.

Parameters:

serviceName - the unique name of the service

Returns:

true if there is a service registered with the specified name; false otherwise

getServiceManager

public ServiceManager getServiceManager(ServiceName serviceName)
                                 throws ServiceNotFoundException

Gets the service manager registered under the specified name.

Parameters:

serviceName - the unique name of the service

Returns:

the ServiceManager

Throws:

ServiceNotFoundException - if there is no service registered under the specified name

getServiceManager

public ServiceManager getServiceManager(Class type)

Gets the first registered service manager that creates an instance of the specified type, or null if no service managers create an instance of the specified type.

Parameters:

type - the of the desired service

Returns:

the first registered service manager that creates an instance of the specified type, or null if none found

getServiceManagers

public List getServiceManagers(Class type)

Gets all service managers that create an instances of the specified type, or an empty list if no service managers create an instance of the specified type.

Parameters:

type - the of the desired service managers

Returns:

all service managers that create an instances of the specified type, or an empty list if none found

getService

public Object getService(Class type)

Gets the first registed and running service that is an instance of the specified type, or null if no instances of the specified type are running.

Parameters:

type - the of the desired service

Returns:

the first registed and running service that is an instance of the specified type or null if none found

getServices

public List getServices(Class type)

Gets the all of running service that are an instances of the specified type, or an empty list if no instances of the specified type are running.

Parameters:

type - the of the desired service

Returns:

the all of running service that are an instances of the specified type, or an empty list if none found

registerService

public void registerService(ServiceName serviceName,
                            ServiceFactory serviceFactory)
                     throws ServiceAlreadyExistsException,
                            ServiceRegistrationException

Creates a ServiceManager and registers it under the specified name. If the service is restartable, it will enter the server in the STOPPED state. If a service is not restartable, the service manager will assure that all dependencies are satisfied and service will immediately enter in the RUNNING state. If a dependency for a non-restartable service is not immediately satisfiable, this method will throw a ServiceRegistrationException.

Parameters:

serviceName - the unique name of the service

serviceFactory - the factory used to create the service

Throws:

ServiceAlreadyExistsException - if service is already registered with the specified name

ServiceRegistrationException - if the service is not restartable and an error occured while starting the service

unregisterService

public void unregisterService(ServiceName serviceName,
                              StopStrategy stopStrategy)
                       throws ServiceNotFoundException,
                              ServiceRegistrationException

Stops and destorys the ServiceManager and then unregisters it. The ServiceManagerRegistry will attempt to stop the service using the specified stop strategy, but if the service can not be stopped a ServiceRegistrationException will be thrown containing either an UnsatisfiedConditionsException or an IllegalServiceStateException.

Parameters:

serviceName - the unique name of the service

stopStrategy - the strategy that determines how unsatisfied conditions are handled

Throws:

ServiceNotFoundException - if there is no service registered under the specified name

ServiceRegistrationException - if the service could not be stopped