com.sdm.quasar.client.core.common.services
Class ServiceNode

java.lang.Object
  com.sdm.quasar.client.core.common.services.ServiceNode

public class ServiceNode

extends java.lang.Object

Manages the services a node (an ID) offers in the hierarchy. This implementation can be used for any tagging interface of the services.

Constructor Summary

ServiceNode(java.lang.Class taggingInterface)
Constructor.

Method Summary

java.lang.Object[]	getAllServiceImplementations(java.lang.Class service) Returns all registered serviceimplementations of this node for the service class given
java.lang.Class[]	getAllServices() Returns all service key classes for this ServiceNode.
java.lang.Object	getService(java.lang.Class service, boolean hierachyAccess) Returns the implementation for the given service.
boolean	hasService(java.lang.Class service, boolean hierachyAccess) Tests whether a service exists
void	registerService(java.lang.Class service, java.lang.Object implementation, int serviceMode) Registers a service in this node.
void	unregisterService(java.lang.Class service, java.lang.Object implementation) Unregisters a service in this node.

Methods inherited from class java.lang.Object

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

Constructor Detail

ServiceNode

public ServiceNode(java.lang.Class taggingInterface)

Constructor.

Parameters:

taggingInterface - the required tagging interface class or null if no tagging interface is required.

Method Detail

registerService

public void registerService(java.lang.Class service,
                            java.lang.Object implementation,
                            int serviceMode)

Registers a service in this node.

Parameters:

service - the service interface class

implementation - the service implementation

serviceMode - the service mode, this implementation should be installed for (one of #FROM_PARENT, #DIRECT or #HIERARCHY).

unregisterService

public void unregisterService(java.lang.Class service,
                              java.lang.Object implementation)

Unregisters a service in this node.

Parameters:

service - the service interface class

implementation - the service implementation

hasService

public boolean hasService(java.lang.Class service,
                          boolean hierachyAccess)

Tests whether a service exists

Parameters:

service - the service interface class

hierachyAccess - if true, the access to the service is done by looking up the hierachy, if false it is an external access

Returns:

true if the service is registered

getService

public java.lang.Object getService(java.lang.Class service,
                                   boolean hierachyAccess)

Returns the implementation for the given service. An assertion will be thrown when the service is not registered.

Parameters:

service - the service interface class

hierachyAccess - if true, the access to the service is done by looking up the hierachy, if false it is an external access

Returns:

the implementation of the service

getAllServices

public java.lang.Class[] getAllServices()

Returns all service key classes for this ServiceNode.

getAllServiceImplementations

public java.lang.Object[] getAllServiceImplementations(java.lang.Class service)

Returns all registered serviceimplementations of this node for the service class given

Parameters:

service - the service class

Returns:

an array with all service-implementations. The index is AbstractServiceManager.FROM_PARENT, AbstractServiceManager.DIRECT and AbstractServiceManager.HIERARCHY