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Re: [Savannah-hackers] submission of The Comet Middleware Environment -


From: Loic Dachary
Subject: Re: [Savannah-hackers] submission of The Comet Middleware Environment - savannah.nongnu.org
Date: Thu, 10 Apr 2003 12:51:13 +0200

        Hi,

        Would you be so kind as to test Comet on a free Java environment ?
Experience shows that it is not easy, unfortunately. 

        Also you might want to fix the COPYING file in your
distribution since it does not contain a copy of the GNU GPL.

        Could you please submit your project again when you're done ?

        Thanks in advance,

address@hidden writes:
 > 
 > A package was submitted to savannah.nongnu.org
 > This mail was sent to address@hidden, address@hidden
 > 
 > 
 > Frederic Peschanski <address@hidden> described the package as follows:
 > License: gpl
 > Other License: 
 > Package: The Comet Middleware Environment
 > System name: comet
 > Type: non-GNU
 > 
 > Description:
 > The Comet middleware project is a Java-based environment
 > for highly-dynamic distributed applications.
 > 
 > It has been developped at the University Pierre & Marie Curie in Paris
 > as well as at the University of Tokyo in the last few years.
 > 
 > It is basically a research project but it is now quite stable and we
 > think it is a good time to release it as a free software project.
 > 
 > Components represent the basic building blocks of the Comet-based
 > distributed systems. Connections allow components to be linked
 > together, through logical connectors. Events are used to communicate
 > asynchronously between components.
 > 
 > A difference with most related approaches is that components do not
 > reference to each other so that dynamic changes are always possible.
 > 
 > It is also possible to change components internally at runtime,
 > through a \"protocol & role\" system.
 > 
 > Finally, a preliminary support for mobility has been added, strong
 > migration is on the way.
 > 
 > The implementation provides a language layer, named Scope, as well as
 > the underlying middleware and several services and examples.
 > 
 > In the benchmarks/ sub-directory, a (simple) performance comparision
 > with RMI is on the way. For the moment, despite the added features,
 > Comet is twice as fast for basic communications.
 > 
 > Note: Scientific papers are available upon request and documentation
 > is on the (slow) way.
 > 
 > 
 > Other Software Required:
 > The core subsystem and libraries depend on SUN\'s JDK1.2. We do not know yet 
 > the level of compatiliby with GNU CLASSPATH but we are confident since we 
 > only employ basic functionalities (e.g. network is managed through simple 
 > sockets, no RMI or whatever). There may be a problem with the classloader 
 > though. Anyway, the whole code is GPLed.
 > 
 > Python or Jython is necessary to run the source-code translator (which takes 
 > a Scope file and generates a set of Java files).
 > 
 > Jython is also necessary to run the graphical frontend (dynamic deployment 
 > tool)
 > 
 > Other Comments:
 > The source code has been put at:
 > 
 > http://web.yl.is.s.u-tokyo.ac.jp/~pesch/comet-1.0.tar.gz
 > 

-- 
             Sauvez le droit d'auteur
Loic   Dachary   http://eucd.info/  address@hidden
              Tel : 33 1 42 76 05 49




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