Micheal is right in that using RMI more tightly couples you to the underlying asset object model, but it also gives you a lot of flexibility. For instance, every time our object model changes, as part of the build process, the package is created/updated to include the updated JARS, updated header section, and updated code for the enumerations. It will then validate the package, build it, and create a new snapshot with the version of the model.

To Micheal's point, I had to update my code to handle the change in the way header is stored in BRMS vs. Guvnor. In BRMS it was a property on the PackageItem, but now it is an AssetItem in the package.

Here is a sample of connecting to the JCR, then using said session with the Drools API

// THIS first part is JackRabbit's RMI code
ClientRepositoryFactory factory = new ClientRepositoryFactory();
Repository repository = factory.getRepository(rmiURL);

Session session = repository.login(new SimpleCredentials(username, password.toCharArray()));

// THIS IS DROOLS API
RulesRepository rulesRepository = new RulesRepository(session);

With the rulesRepository, you can than get packages out

PackageIterator iterator = rulesRepository.listPackages();

Create a new package

rulesPackage = rulesRepository.createPackage(packageName, packageName);

and so on...

On Fri, Oct 3, 2008 at 6:13 AM, Asif Akram <asif.akram@imperial.ac.uk> wrote:
Hi Dave,

   Is it possible to share the code snippet with us. I don't have any experience of Jackrabbit and RMI. Any concrete example will be helpful.


Cheers
Asif

David Sinclair wrote:
Hi Leo,

I use the Drools API to interact with the JCR with I expose over RMI. I have the security on Jackrabbit, so I log into the JCR, not BRMS. But once the session is established I use the org.drools.repository.RulesRepository to work with BRMS artifcacts as opposed to JCR ones.

hope that makes sense,

dave

On Thu, Oct 2, 2008 at 3:48 PM, Leonardo Figueiredo <leo.lists@gmail.com <mailto:leo.lists@gmail.com>> wrote:

   Hi David,

   You mean going around Drools Api and acessing the JCR directly?

   I really wanted the BRMS to expose an interface to add things.
   That would provide more security on upgrading versions without
   breaking functionality.

   Regards,
   Leo

   On Thu, Oct 2, 2008 at 11:58 AM, David Sinclair
   <dsinclair@chariotsolutions.com
   <mailto:dsinclair@chariotsolutions.com>> wrote:

       Guys,

       I use the Drools API over RMI. Jackrbait provides an RMI
       implementation to manipulate the JCR, and the Drools
       RulesRepository class works with an open JCR session object.
       Really is a pieice of cake; that is if an RMI solution is ok
       with you. You can always go RMI over HTTP too.

       dave


       On Thu, Oct 2, 2008 at 2:43 AM, Asif Akram
       <asif.akram@imperial.ac.uk <mailto:asif.akram@imperial.ac.uk>>
       wrote:

           Hi Leo,

              Thanks for your reply. You are absolutely correct, I
           was talking about API to upload rules, either using
           Restlet API or WebDav Client API or Drools API. I have
           read the article mentioning the support for Restlet Web
           Services and Webdav but haven't seen any such example yet.
           If only Drools Guvnor supports such features, I am fine
           with Drools 5.0.

           Leo, it will be be nice of you if you can share your
           homemade customized Servlet. Your sharing of ideas and
           experience will be appreciated.

           Cheers
           Asif


           Leonardo Figueiredo wrote:

               Hi,

               You mean using an api to add rules to the BRMS? If so
               i have the same problem. I am using an "homemade"
               build that have a custom Servlet that allows me to
               pass an DRL to be added to the BRMS.

               I am still searching for a better solution.


               Regards,
               Leo



               On Wed, Oct 1, 2008 at 7:00 AM, Asif Akram
               <asif.akram@imperial.ac.uk
               <mailto:asif.akram@imperial.ac.uk>
               <mailto:asif.akram@imperial.ac.uk
               <mailto:asif.akram@imperial.ac.uk>>> wrote:

                  Hi,

                    I was wondering if it is possible to create and
               upload rules at
                  runtime to BRMS to be accessed by other users. I
               have only seen
                  the examples where existing packages/rules are
               loaded from the
                  BRMS. Any help and suggestion will be appreciated.

                  Cheers
                  Asif


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