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Re: [jwt-dev] Questions concerning JWT4SOA and Bonita
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Hi all,
Please see my answers below:
I started on working with Bonita today and it's actually quite easy to
use. The documentation is well written and the administration website
is very well structured and easily understandable. I deployed some
existing bar files to the engine and executed them step by step. Then
I thought, okay, it should be quite easy to deploy an existing bar
file with some lines of Java code and had a closer look into the
JavaDoc. There, I found that there exists a ManagementAPI interface
that allows to deploy a xpdl- (deprecated) or a bar-file. But since
this is only an interface, there must be some concrete classes in
Bonita where this is already implemented and which I can invoke. Where
exactly can I find the right one?
Bonita classes implementations are accessible via the AccessorUtil
class, which contains static methods to get all API implementations.
However, if you want to communicate with a remote instance of Bonita,
you'll have to:
* let your server expose the API as EJB services. This can be done by
configuring the environment.xml
* Tell your client to use the EJB client implementation of the API. For
this, there is a system property to set.
I let you take a look at documentation to get more details on this topic.
I personally always use an embedded local Bonita instance (by simply
adding the bonita-server jar file and dependencies to class path). This
makes testing and development easier and faster, but I don't have a console.
Then I thought, aah, now that I have the Bonita engine running, I want
to test the monitoring plugin in JWT. Mickael already sent me the code
for the workflow service and I had a look at our Wiki page, but I had
not been successfull. The first thing that I noticed was, that the
server is directly called in the JWT monitoring frame (compare bug
264167). Using existing tools for server management, is probably much
better. When I add the JWT Monitoring view to Eclipse then I can
right-click and add a new workflow service. But where exactly does the
workflow service come from? I only have the Java code (which is not a
plugin), and there is no window to select a JAR archive or something.
So how is the WorkflowService selected?
The old/current monitoring plugin defines an extension point where you
can plug your WorkflowService (more precisely, a
WorkflowServiceProvider, which gives a WorkflowService), then you should
be able to find your extension when right-clicking on the monitoring view.
However this old piece of code is probably too Bonita3-oriented, you'll
probably have some refactoring to do... Feel free to modify it as you
wish and to commit your changes, it is only a draft.
The third thing that is probably quite important for vendors is how to
deploy a process directly from Eclipse. Okay, I already mentioned the
server list where each vendor should have the possibility to register
their server (e.g. Nova Bonita or jBPM), but additionally we will
probably need a possibility to deploy the process. This might either
go in the context of the server list (Deploy... Select workflow) or in
the context of the workflow (Export... Deploy to server). I hope that
we can have some discussion on bug 264167 where vendors will express
their needs and then can create an interface which does fit their needs.
Agree.
Any wishes and ideas concerning this issue would be helpful.
Thanks for reading and best regards,
Florian
PS: This is probably something we could also discuss in a separate
telco concerning JWT4SOA. Mickael, if you find some free time, let us
shortly chat what shall be part of this telco and we will organize it.
Let's use Skype ;)
Regards,
Mickael
