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Re: [jwt-dev] Open source Eclipse plug-in based on JaWE&Shark
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Hello Pablo,
Thanks for your interest to JWT and for your advices.
I'll try to spend some time today to take a look at YAPROC to see which
interesting features it contains and give you some feedback.
Here are a few comments about JWT that may be interesting for you to know:
* Since JWT is an Eclipse.org project, we are not allowed to include
into JWT some code or libraries that are under the LGPL or GPL. Only EPL
code is allowed on Eclipse.org code base, and we can use some code/libs
under the BSD, Apache, MIT-like licenses, but it requires the approval
by the Eclipse PMC (if you are interested in Eclipse Intellectual
Property policy, take a look at this page =>
http://www.eclipse.org/legal/EclipseLegalProcessPoster.pdf)...
* JWT-wam (workflow administration and monitoring) is currently only a
draft. You can find a few details on the page
http://wiki.eclipse.org/JWT_Monitoring. As you can see, we have a kind
of "abstraction layer" that contains some beans to describe the workflow
state, and a WorkflowService interface that contains a set of operations
to query the workflow engine about runtime data. This API is not
definitive since it is often refactored, any comments are welcome ;)
* To link a workflow engine to JWT, the only thing to do is to implement
this WorkflowService interface. We currently have an implementation for
Bonita v3 with webservices (on SCorWare's private SVN, since we cannot
commit it to Eclipse because of license), one with an "embedded" Bonita
v4, but we could also think about an implementation directly on
databases, thanks to VirtualDB.
Feel free to criticize it if you want to, it is still in progress and
any other opinion will help us!
Regards,
Mickael
Pablo Beltran a écrit :
YAPROC is a new Eclipse (one moth old) plugin that embeds JaWE & Shark
with many nice features like reporting, process viewer at runtime,
activity management, graphical history,... and compatible with the
XPDL 1.0 specification.
Now, YAPROC becomes an open source project under the LGPL v3 license
terms. Maybe you can re-use some parts in your project.
The plugin, documentation, sources and online demos are available from
www.upversion.com <http://www.upversion.com/>
Likely a very interesting feature for you is the VirtualDB that allows
you to integrate differents java technologies into a jdbc driver. It's
not a technology from me but I adapted it to be successfully used to
integrate Shark into a new complex UI.
Based in my experience with Shark (which has a quite complex API) and
YAPROC (which has a quite complex UI) I would separate UI issues from
communication workflow issues. Mybe you have done this exercise but
If not I would like alert to you about potential design limits to
build a complex and usable UI based on a workflow communication layer
when required functionality grows and grows.
I think now is too soon to implement this kind of solutions in JWT
because your actual UI is quite basic but maybe in the near future if
you develop new plugin views and you need to relate many of them and
many complex filters would be required to show a lot of information
in the Eclipse Workbench in a coherent manner, so maybe this problem
arises and you need to resolve it. In this case, VirtualDB is a very
suitable technology to solve this kind of problems.
Best regards,
Pablo.
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