com.prosysopc.ua.stack.application

Class ServiceHandlerComposition

java.lang.Object

com.prosysopc.ua.stack.application.ServiceHandlerComposition

All Implemented Interfaces:

ServiceHandler

public class ServiceHandlerComposition
extends Object
implements ServiceHandler

Composition of ServiceHandlers.

Constructor Summary

Constructors

Constructor and Description
ServiceHandlerComposition() Constructor for ServiceHandlerComposition.

Method Summary

Modifier and Type	Method and Description
void	add(Object o) Add ServiceHandler or Service handling object.
<T> T	getServiceHandlerByService(Class<? extends ServiceRequest> requestClass) Returns the service handler that handles given request.
ServiceHandler[]	getServiceHandlers() getServiceHandlers.
void	getSupportedServices(Collection<Class<? extends IEncodeable>> result) Get supported services.
static ServiceHandler	of(Object... handlers) Create service handler composed of a set of service handlers.
static void	readWithReflection(Object serviceHandler, ServiceHandlerComposition result) Reads supported service handler methods with reflection.
void	serve(EndpointServiceRequest<?,?> request) Serve a service request.
boolean	supportsService(Class<? extends IEncodeable> clazz) Queries whether this handler supports a given request class.

Methods inherited from class java.lang.Object

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

Constructor Detail

ServiceHandlerComposition

public ServiceHandlerComposition()

Constructor for ServiceHandlerComposition.

Method Detail

of

public static final ServiceHandler of(Object... handlers)

Create service handler composed of a set of service handlers. Service handlers either (a) implement ServiceHandler or implement service request methods, e.g. methods in SessionServiceSetHandler.

Parameters:

handlers - service handlers.

Returns:

a new service handler

readWithReflection

public static void readWithReflection(Object serviceHandler,
                                      ServiceHandlerComposition result)

Reads supported service handler methods with reflection.

Parameters:

serviceHandler - service handler

result - composition where reflection based handlers are added

add

public void add(Object o)

Add ServiceHandler or Service handling object. ServiceHandler is added as is, other objects are inspectew with reflected and suitable service handling methods are added. A method is suitable for service handing if it has no return arguments and one parametrized argument of EndpointServiceReqest. For example: new Object() { public void onTestStack( EndpointServiceRequest<TestStackRequest, TestStackResponse> req) {} }

Parameters:

o - ServiceHandler or Service handling object.

getServiceHandlerByService

public <T> T getServiceHandlerByService(Class<? extends ServiceRequest> requestClass)

Returns the service handler that handles given request.

Type Parameters:

T - service handler class

Parameters:

requestClass - request class

Returns:

the service handler or null

getServiceHandlers

public ServiceHandler[] getServiceHandlers()

getServiceHandlers.

Returns:

an array of ServiceHandler objects.

getSupportedServices

public void getSupportedServices(Collection<Class<? extends IEncodeable>> result)

Get supported services. Result will be filled with the request class of the supported services.

Specified by:

getSupportedServices in interface ServiceHandler

Parameters:

result - to be filled with request classes of supported services.

serve

public void serve(EndpointServiceRequest<?,?> request)

Serve a service request.

The implementation is allowed to may submit the response later and from another thread.

Specified by:

serve in interface ServiceHandler

Parameters:

request - the service request

supportsService

public boolean supportsService(Class<? extends IEncodeable> clazz)

Queries whether this handler supports a given request class.

Specified by:

supportsService in interface ServiceHandler

Parameters:

clazz - class

Returns:

true if this service handler can handle given class