Re: Some questions

Hi Geeta.

first, thanks for information.

I'd like a bit of comment around the multiple ways to access the engine.
Isn't it possible to tell in configuration of engine something like 'use wrapper call which 
will act as a proxy to a remote corba engine' ? I thought it would be possible due to the
modularity of shark engine (something like a  'corba client engine').

Having multiple engine with different name woudln't mess up think when deploying new xpdl
(eg, one engine is using the old xpdl while the admin engine will get the new one, resulting in
desynchronization between engines?)
Moreover, i would like my JSP to use the external engine (thru corba for example) to reduce
the memory usage in tomcat. One of our web applications is quite unstable and sometimes eats all
memory, i wouldn't like the heavy processing in workflow to be done inside tomcat.

On point number 5, you send me to initialising database, there is some shell script to run? Isn't there 
a simple SQL script i could send to database to create table/sequences/triggers? According to logs i saw
when running the script it also add demo workflow instance iin database. Nice for tests, less for production...

Last comment, do you mean by your suggested code that, if i don't call it, all workflows started on the old
version of the xpdl will be broken until i upgrade them using code? If yes, shouldn't it be done automatically 
by engine when new xpdl is uploaded?

Le Mardi 19 Juillet 2005 15:38, [email protected] a écrit :
> Hi David,
> 
> Here are answers to some of your questions:
> 
> 2. http://shark.objectweb.org/doc/1.1/ToolAgents/tool_agents.html
> 3. I don't think this is possible.. at least as far as i know.
> 4. The key is to use different Shark.confs with different engine names and 
> to turn all caches off: 
> http://mail-archive.objectweb.org/shark/2005-02/msg00071.html
> 5. http://shark.objectweb.org/doc/1.1/HowTo/how_to.html#d0e11
> 6. You can update the current version of a process while old processes are 
> still running against an older version. Code you can use:
>  
>         PackageAdministration pa = 
> Shark.getInstance().getAdminInterface().getPackageAdministration();
>         RepositoryMgr rm = Shark.getInstance().getRepositoryManager();
>  
>         String pkgId = rm.getPackageId(xpdlName);
>         try {
>                 pa.updatePackage(pkgId, xpdlName);
>         }
>         catch (Throwable e) {
>                 throw new BaseException(e);
>         }
>  
> Regards,
> Geeta
> 
> 
> 
> 
> delbd <[email protected]> 
> 07/19/2005 04:45 AM
> Please respond to
> [email protected]
> 
> 
> To
> [email protected]
> cc
> 
> Subject
> {Spam?} [shark] Some questions
> 
> 
> 
> 
> 
> 
> Hello, i'd like to get the following informations.
> 
> 1) How to have shark use the users/roles i have define in a HP-UX system.
> I already have code which is able to retrieve such users/group in a tomcat 
> realm, i need to know what 
> i have to implement so shark recognoize those users/group as participants
> 
> 2) How to add custom tools? (like pdf generation)
> 
> 3) Once this is done, is it possible to have the current list of 
> participants/tools preloaded in
> jawe when a wf admin wants to create a new package?
> 
> 4) what is the suggested configuration if i want the shark engine to run 
> in it's own system process while I have a 
> separate JSP based application access this engine (through corba if am not 
> wrong)
> 
> 5) Is it easy to use something else than Hypersonic SQL as database (are 
> there some SQL script somewhere to create the database?)
> 
> 6) Is shark quite resistant to changes in process definition while some 
> workflow instance are running on old versions of those process?
> 
> Thanks
> -- 
> David Delbecq
> Royal Meteorological Institute of Belgium
> 
> -
> Is there life after /sbin/halt -p?
> 
> 

-- 
David Delbecq
Royal Meteorological Institute of Belgium

-
Is there life after /sbin/halt -p?

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