Sean and Dan, Thanks a LOT by your explanations. I will investigate the cited technologies.
Helcio. Em 19 de abril de 2012 15:58, Sean Landis <[email protected]> escreveu: > Hi Helcio, > > Web services are extremely important because nearly everyone uses > them. There are two approaches to web services, SOAP-based WS-*, and > REST. Both are important, but if I were teaching the subject, I would > focus on REST because 1), you don't use IDEs to auto-generate > everything, 2) you use web standards that every developer should > understand, 3) there are real design considerations involved when > designing your service, 4) there are great examples in-the-wild that > your students could study. I strongly recommend "RESTful Web Services" > by Richardson and Ruby, if you are interested. > > I think you might be doing a disservice if you ignore JMS. As I see > it, there are really Three important areas: > > 1) Low-level protocols (UDP, TCP, Multicast, etc) > 2) Synchronous RPC (RMI, Web Services) > 3) Asynchronous messaging (JMS, etc) > > These divisions aren't clean. For example RESTafarians would be > outraged that RESTful web services are categorized under RPC. I > suppose you could have a fourth category for web-style applications > that would include REST, but not WS-*. At any rate, these seem useful > ways to organize a discussion of network middleware for discussion. > > Sean > > On Thu, Apr 19, 2012 at 11:15 AM, helcio silva > <[email protected]> wrote: >> Hi, Dan. >> >> Some years ago, when I was a PhD student, I had a graduate course >> related to design of distributed systems. On that course, we used >> technologies like sockets, Sun's RPC (in C) and CORBA (in C++). Those >> were the most popular technologies of that time (there was not web >> service yet). >> >> I would like my students learn how to design distributed systems >> using some modern technologies. But, I must to confess, I am not an >> huge fan of IDEs or too complicated frameworks. We have an >> undergraduate course about programming for Web using Java frameworks >> that is aimed to provide such frameworks. >> >> Helcio. >> >> Em 19 de abril de 2012 05:14, Dan Creswell <[email protected]> escreveu: >>> Cool, so you know what? >>> >>> I'd be very tempted to suggest you replace step 3 with some more raw-http >>> like thing (I hesitate to say RESTful because that's poorly understood and >>> not entirely meaningful/useful). >>> >>> That sort of thing can be done with any of the straightforward webservers >>> e.g. Jetty. >>> >>> Such a choice also allows you to branch out into Web APIs and the like >>> which are pretty relevant today in many environments. >>> >>> You could go further and then build the JINI version which embodies some >>> similar patterns plus moveable code etc (interesting contrast with the web >>> "standard" for moveable code, JavaScript). >>> >>> However, there is one big question I think maybe we should answer first >>> which is: >>> >>> What do you want your students to walk away with? >>> >>> On 19 April 2012 05:27, helcio silva <[email protected]> wrote: >>> >>>> Hi to everybody. >>>> >>>> Currently, I am teaching a undergraduate course on distributed >>>> systems built using Java. I am structuring that course of the >>>> following manner: >>>> >>>> * first part: I present a centralized application, and I separate >>>> it on two components - server and client. Both communicate using the >>>> sockets API. >>>> >>>> * second part: I distribute that application using Java RMI. There >>>> are three components now: server, client and registry (rmiregistry). >>>> >>>> * third part: I wanna distribute the application using Web >>>> Services. However, this technology seemingly requires the use of Java >>>> EE, and I don't want to use nothing more than Java SE. In effect, I >>>> write my programs in emacs, compile them using the 'javac' compiler >>>> and run them using the 'java' interpreter on a Linux shell. I really >>>> think Web Services is boring. In fact, I don't know how important is >>>> Web Services in the distributed systems world. >>>> >>>> I am considering to replace Web Services by River on third part, >>>> mainly because I have some experience on that technology. What do you >>>> think about that, gentlemen? Will be my students prejudiced? >>>> >>>> PS: sorry by post my issue on this list. >>>> >>>> Best regards to all. >>>> >>>> Helcio. >>>>
