*Guvnor * The REST API has been most beneficial for others in your situation. The user-guide shows how you can retrieve an asset and store it back again. *Drools Expert * There is a "fluent API" with which you can programmatically construct rules. Furthermore, depending on the degree to which your rules may differ, use of Rule Templates may be an option. I know other people are following a similar path to yourself and they should be able to talk to you about real-life experiences. With kind regards, Mike On 15 November 2011 06:42, kapokfly <ivan.jiang.ww(a)foxmail.com&gt; wrote:

kapokfly wrote: Based on your requirements, you may have two options. One is building your own application to write, manage and store rules. Essentially you are building a Guvnor like application with your own implementation. A second option is to reuse Guvnor (or at least the Guvnor server), this way you do not need to build your own implementation of life cycle management, version control, authentication/role-based -authorization, search, meta data management, Qos policy enforcement etc. In Guvnor, the client UI and the backend server can be separated. The client communicates with the Guvnor server using either GWT-RPC or REST API. This makes it possible to build your own UI while you still utilize the Guvnor backend server. At the moment, we have a major refactoring going on in Guvnor, project name Guvnor NG (Next Generation): http://community.jboss.org/thread/173484. The goal of Guvnor NG is to make Guvnor become a generic service repository and governance tool with the ability to apply extensions and plugins for specific domains. For example, Guvnor NG for Drools will be the generic service repository + rules specific plugins. In your case, you can store both your metadata and your engineering model in Guvnor repository. As far as the generic service repository is concerned, it does not matter what is stored in its repository. The service repository manages whatever is stored in its repository and provide life cycle management, version control, authentication/role-based-authorization, search, meta data management,Qos policy enforcement services etc on top of it. The asset meta data in Guvnor are all pre-defined. But we have a story planned to support customized meta data: https://issues.jboss.org/browse/GUVNOR-1170 jboss 4.x is way too old. Jboss as 7.1 is much more superior. Though I do understand there are cases upgrade is not an option. There are two ways to run Guvnor in a SAAS environment. One is running an instance of Guvnor for each user, one is somehow sharing one instance of Guvnor among many users or VMs. The former way is the most straightforward way to use Guvnor though it may not be the most efficient way to use resources. One of the fundamental requirement to use a shared instance of Guvnor for different users is to give each user an isolated environment so that each use only see their own rules. One technology that potentially can be helpful here is JCR workspace. I.e, each user logs in with their own workspaces assigned, this way their assets are isolated from other users' assets. Anyway, this is a very interesting topic, let us know if there is anything you need from Guvnor. Of course, any contributions to help Guvnor improve itself are always welcome.

On 2011/11/16 16:37, kapokfly wrote: At the moment, it is possible to achieve this by using role-based-authorization in Guvnor. I.e., you create some common packages that are designed to be shared by everyone. You assign package-readonly permissions to everyone so that they have read-only access to these common packages. You can also use Global Area to achieve same effect. Essentially Global area is a special package that can be shared by all packages. Then each user has package-admin permission for their own packages. The "Workspace" as I mentioned early will provide a more completely isolated environment for each user when multiple users are sharing one instance of Guvnor. However we dont have any concrete stories planned for this yet. Cheers, Jervis