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Java Forum / General / January 2007RMI i WebService - why this way?
I just played with WebService in jdk6 and i dont understand why its like rmi - I have to generate classes. why they were able to make ejb3 simple, but this @WebService annotation needs all this generated classes. Maybe because it uses rmi, why rmi is that way ? from what i know its just a server that sends/receive serialized objects. I remember i wrote webserver once in java and i havent used code generation. Shouldnt they just make a higher level of abstraction? Please tell me. They make everything simpler, but rmi will never change and everybody is ok with that. > I just played with WebService in jdk6 and i dont understand why its like > rmi - I have to generate classes. why they were able to make ejb3 simple, [quoted text clipped - 4 lines] > higher level of abstraction? Please tell me. They make everything simpler, > but rmi will never change and everybody is ok with that. I hope I understood your question right - For remote invocations, be it a Remote Object or a Web service, you'd need client stubs. The client stubs act as a "proxy" and actually make the remote call, giving your code the impression that the call is local. The difference between RMI and Webservices, in this case, would be that RMI uses JRMP, a binary protocol to invoke remote methods, while WebServices (as a standard practice) use SOAP over HTTP, which is a text-based protocol. SOAP attachments can be used to give a binary flavor, but in and of itself, SOAP/HTTP is text. -cheers, Manish >> I just played with WebService in jdk6 and i dont understand why its like >> rmi - I have to generate classes. why they were able to make ejb3 simple, [quoted text clipped - 17 lines] > text-based protocol. SOAP attachments can be used to give a binary > flavor, but in and of itself, SOAP/HTTP is text. By why generate subs and not just use jdk dynamic proxy or some hand written proxy? Is rmi really impossible without code generation? Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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