Package org.universAAL.middleware.service

Interface Summary

AvailabilitySubscriber	This interface is implemented whether components that would like to be notified whenever a new service realization is registered or deregistered.
ServiceBus	The service bus is a call-based bus, i.e., the ServiceCaller members who post a message to this bus normally have a service request and would like to receive a response in return, especially if the service result also includes the provision of specific info.

Class Summary

AggregatingFilter	The aggregatingFilter class together with ServiceRequest class cover the CALL clause of a SPARQL-like query.
AggregatingFilterFactory	A Factory to create different kinds of AggregatingFilter.
AggregationFunction	The AggregationFunction class includes the required functions in the SELECT clause of a the SPARQL-like query.
CallStatus	The CallStatus simply describes the possible status of the services.
DefaultServiceCaller	The default service caller simply ignores the notification about losing connection to other instances of the middleware and calls the services either only in an synchronous way (using the method ServiceCaller.call(org.universAAL.middleware.service.ServiceRequest)) or ignores the asynchronous responses.
ServiceBusFacade
ServiceCall	Operations of ServiceCallees will be called by passing an instance of this class.
ServiceCallee	This is an abstract class that the service callee members of the service bus must derive from.
ServiceCaller	/** This is an abstract class that the service caller members of the service bus must derive from.
ServiceRequest	A class that represents a service request resource, which is used by the ServiceCaller-s when performing synchronous or asynchronous requests.
ServiceResponse	A class that represents a service response resource, which is produced by the ServiceCallee-s when handling calls, and are delivered to the ServiceCaller-s as a result of their requests.

Enum Summary

AggregatingFilterFactory.MinMax

Definition of the type of the aggregation functions: either a minimum value or a maximum value.