Integrating a BPM model into an existent WebML model

16 May '12, 10:36 PM
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Hey,

I did the tutorials on both BPM and WebML, and built projects in both perspectives. What I can't really wrap my head around is how do you integrate a BPM model in an existent WebML model? I have done the synchronization tutorial, but that mainly explains how to create a new WebML model and sync it do the BPM one, after which you can edit the tasks and such. But for an existent WebML model, it's really confusing how it all works.

For example, let's say I have a WebML model for an IT store. Now I want to use a BPM model which describes the process of order handling for the store. How would that synchronize over the WebML model? Would I need to add the current users to the BPM roles to make sure I have the same users belonging to the same groups? What if I already have siteviews for the clients and store staff, how do those integrate with the Control Views? Would I need to create separate Control Views for each lane to integrate them with the siteviews assigned to each group of users?

Long story short, if I already have an existent web application and want to add processes to it, should I try synchronizing with the BPM model and then modify it so it integrates well with my application, or should I just use the BPM model to test the process, then manually design the process in WebML?

Cheers

 
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Hi,

if you want to restrict the access to a specific professor you can prepare a Custom Distribution Policy. (Distribution Policy in the General tab of the Properties View) In the Web Project associated to the BPM model, an Operation Module will be added to the Web Project. In this Module you can retrieve the Group and Users that you want to add to Lane/Task and pass them to the Ok Collector Unit.

Referring to the second request you could set the Process Parameters in the Web Project. If you want to start a Process and preload some Parameters, you can pass the desired values to the Start Process Unit. In your page you can retrieve the list of courses, add the desired Process Parameters to the Start Process Unit and set the values.

For example, if in the BPM project there is a BO and there is a Parameter associated to it, you can follow these suggestions:

  • Retrieve the instance related to the BO (by Index Unit)
  • Add to the Start Process Unit the Process Parameters related to the BO (the OID of the selected BO and the desired Attributes).

In this way you can start the Process and preload the Process Parameters.

   
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Hi,

you can integrate a BPM model into an existing WebML model.

With reference to the steps described in the following article, of which I briefly quote the first steps:

1) open the WebML project

2) in the Outline View, right click on the ""Project"" node -> ""Synchronize BPM to Web Project...""

3) follow the wizard steps: select the BPM Project you wish to synchronize with the WebML Project, click Next (to see the changes that will be applied to the project) and then Finish.

In the WebML Project some new elements will appear, for example new entities, new modules,...

In order to integrate the BPM functionalities inside the Web Project, you need to perform the following additional steps:

1) remove the Control View, which is useless

2) use the BPM Units to control your BPM Process. For example the ""Start Process Unit"" will start the BPM process.

 
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Hi,

with "notes" and "download" do you mean the BPM Tasks or the elements of your Model? What is the reason why you need to remove them ?

Can you explain me your situation (BPM Model and Web Project) and your needs ?

 
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Hey,

Let me give you more details:

My WebML project is a faculty courses application, where faculty members can add courses and students can enroll. To demonstrate the BPM capability, I decided to add a process through which a student enrolls to a course (the student asks to be enrolled, some checks are being made to see if the course still allows registrations, and then the course's lecturer approves or rejects the application).

Here is my current feedback:

I've synchronized the BPM project to the WebML project. The issue is that there is a lot of stuff that has been added that I do not need (like the notes and attachments units and entities in the database model), and it's also a bit difficult to integrate the process with the already-made application (I'm referring mostly to the control views that need to be integrated with the already existent views of the application). It would be nice to have a tutorial on how to integrate processes with existent WebML applications and what does the synchronization do exactly (where all the BPM units and the data model entities would be explained, so users would know how to make modifications to suit their needs).

I think the current synchronization tutorial is mostly suited for people who don't have a WebML model and are creating the BPM process first.

And now I do have two questions:

  1. When a student enrolls to a course, all the professors (users who are in the Professor lane) can see the registration. I would like it so only the professor who created that course would be able to see the process instance (otherwise it creates a weird situation where any professor can approve or reject a student even if the registration wasn't made to their course). Is there any way I can do that?
  2. Can I set the value of a parameter in the process when it starts? For example, I would like to have an index unit in the Student view with the current courses, with an outgoing link that starts the process and also sends the oid of that course. I realize that I could probably insert a task in the process where the user selects the course so I can set the parameter then, but I was wondering if I could skip that and set the parameter by sending the course oid from "outside" the process.

That's about it, thanks!

 
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