Jini device and its application examples (1)
Jini technology, Java makes for success in the calculation of network equipment to provide a suitable platform, more network equipment, especially under the home network of consumer electronic equipment has provided a new network computing structure, thus achieving the long-awaited plug-and-play network equipment.
Jini equipment on the hardware requirements
While Jini is a software system, but a real input system by the use of a series of Jini software and the hardware components. Obviously, the previous general electronic equipment is not directly add to the Jini system in the past. Only when we understand the full support Jini technology hardware norms, the Jini technology will be the future of a more in-depth understanding.
Jini need to structure the data in the Java language definition type services, and services to the different examples of the different approaches to achieve the data type. A service can be different types of members, allowing the example of a service to provide customers with different functions. This is a standard object-oriented software approach. Jini distributed system allows the characteristics of the Java language data types can be a software and hardware architecture to only achieved.
Achieve such a core function of thinking is very simple. Services to an interface definition, the agent interface to support customer service is visible, agents functional modules by service providers View uploading of services, and then to the customer found part of the service was downloaded to the client side. This service-related functional modules prepared by the need to ensure that the Java language portability. However, since this code is used services from the individual examples, it can be the agent of specific detail to know the details of service modules. Download the code, and this is not only aware of the software, but also know that the services of the hardware. In extreme cases, the hardware is service, and all downloadable software is a network-level device driver, having received from the client, the Java language method calls, the network connection on the other end had a hardware Calling specific hardware code.
View of services (Lookup Service) requirements
A service provider to provide the actual function of a functional entity asked for very little, in fact, Jini software services can be used in such a way to run equipment: client side downloaded Jini procedures sent directly to the hardware directly corresponding binary code enforcement. In such circumstances, Jini equipment necessary intelligence is the least. Java programs and device controller interactive manner with a local computer equipment in the general line of interaction is very similar (of course, but also in the area of network communications centre to do some modifications).
However, the provision of services is only part of Jini service requirements. Jini system should become a part of the service must also participate in the discovery of the agreement Jini, Jini View services to its own registration information.
The needs of the two are closely linked. Jini found that the main objective of the agreement is to enable equipment, services or access to local services Jini find a Jini Remote Method Invocation (RMI) are cited. Once this was invoked by service to find in the Jini service registration, allowing Jini system, and other members found and the use of this service.
Tags: examples