org.opennms.osgi

Interface OnmsServiceManager

All Superinterfaces:

SessionListener

All Known Implementing Classes:

OnmsServiceManagerImpl

public interface OnmsServiceManager
extends SessionListener

The OnmsServiceManager is a abstraction layer above the BundleContext. Its intention is to provide a so called session-scope for services. The session-scope is realized by the VaadinApplicationContext-object.

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Therefore you should always use OnmsServiceManager instead of the BundleContext.

A OnmsServiceManager also listens to session events (e.g. to remove all registered services from the OSGi-container for a session when the session has already been destroyed).

Author:

Markus von Rüden

Method Summary

Modifier and Type	Method and Description
VaadinApplicationContext	createApplicationContext(VaadinApplicationContextCreator creator)
EventRegistry	getEventRegistry()
<T> T	getService(Class<T> clazz, VaadinApplicationContext applicationContext) Returns a service in session-scope.
<T> List<T>	getServices(Class<T> clazz, VaadinApplicationContext applicationContext, Hashtable<String,Object> additionalProperties) Returns all registered services within session-scope and may be consider additional Properties.
<T> void	registerAsService(Class<T> serviceClass, T serviceBean, VaadinApplicationContext applicationContext) Register a service with session scope.
<T> void	registerAsService(Class<T> serviceClass, T serviceBean, VaadinApplicationContext applicationContext, Dictionary<String,Object> additionalProperties) Registers a service with session scope but allows to set additional Properties.

Methods inherited from interface org.opennms.vaadin.extender.SessionListener

sessionDestroyed, sessionInitialized

Method Detail

registerAsService

<T> void registerAsService(Class<T> serviceClass,
                           T serviceBean,
                           VaadinApplicationContext applicationContext)

Register a service with session scope.

Parameters:

serviceBean - The service to be registered. Must not be null.

applicationContext - The session scope. Must not be null.

registerAsService

<T> void registerAsService(Class<T> serviceClass,
                           T serviceBean,
                           VaadinApplicationContext applicationContext,
                           Dictionary<String,Object> additionalProperties)

Registers a service with session scope but allows to set additional Properties.

Parameters:

serviceBean - The service to be registered. Must not be null.

applicationContext - the session scope. Must not be null.

additionalProperties - Additional Properties. Must not be null.

getService

<T> T getService(Class<T> clazz,
                 VaadinApplicationContext applicationContext)

Returns a service in session-scope. Be aware that if there are multiple services registered for the given class, only the first one is returned.

Parameters:

clazz - The type of the service. Must not be null.

applicationContext - The session-scope. Must not be null.

getServices

<T> List<T> getServices(Class<T> clazz,
                        VaadinApplicationContext applicationContext,
                        Hashtable<String,Object> additionalProperties)

Returns all registered services within session-scope and may be consider additional Properties.

Parameters:

clazz - the type of the service. Must not be null.

applicationContext - The session scope. Must not be null.

additionalProperties - optional additional propeties. Must not be null.

createApplicationContext

VaadinApplicationContext createApplicationContext(VaadinApplicationContextCreator creator)

getEventRegistry

EventRegistry getEventRegistry()