Real - Time Systems Development
نویسنده
چکیده
base class<>Towable TrolleyTrailerVehicle Implementing an interface 13.7 Interobject messaging UML represents the various different types of communication that can takeplace between objects with a single message generalization. So an abstractUML message could be implemented by a straightforward call to a method,a remote procedure call (rpc), a piped message queue, sockets, or other tech-niques. The type of message used depends on the situation. If the recipientis a ‘passive’ object without an intrinsic thread of execution, it is appropri-ate to use conventional procedure calls with parameters and return values.If, however, the message is passing between two ‘active’ objects, executingsemi-independently, the situation is very different, and signals or data pipesmight be the selected means of communication. UML designates messages Obj_Amessg_1∼1HzObj_B
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