MVC: Where to find the model and the table select in standard BSP apps?

Question

Hello!
We are going to use MSS with the appraisal-application
which is written in BSP and 'e-recruiting'. Both applications use the MVC-design pattern. We are going to do some modifications, but are struggling a bit since MVC is a new topic for us. How is the best way to get an overview of the controllers and views and call sequences in an existing application? We have done this by debugging, but are there other ways to find the 'starting controller', etc. ?
Where can we find the model-code which reads the table-values into the internal table?
We have read a lot about how nice MVC is - how the design gives you a better overview of the application. But without any docuemtation of the design we are quite lost. What are others experiences on this?
regards Tine

Answer 1

Hi Tine,
let's see if I can answer your questions (at least partially).
The main controller is the one you normally call directly in your browser (or after some introduction pages like login etc.). It's typically called start.do or main.do (but can differ). So if you call in the browser:
http://myhost.domain:4711/sap/bc/bsp/sap/myappl/start.do,
just call se80, choose the application myappl and double-click on start.do. There you can get the name of the controller class (just double-click on the class name).
The standard model class is called CL_BSP_MODEL. The model classes from the application inherit from this class.
For a complete documentation please have a look at the online docu:
http://aiokeh.wdf.sap.corp:1080/SAPIKS2/contentShow.sap?_SCLASS=IWB_STRUCT&_SLOIO=EDBB153AAB4A0C0EE10000000A114084&TMP_IWB_TASK=PREVIEW2&RELEASE=640&LANGUAGE=DE&_SEQNUM=106&_LOIO=0FAB3A3C9CA75402E10000000A114084&_CLASS=IWB_EXTHLP
There are also some weblogs written by Craig Cmehil where you can get examples.
Hoping this helps a little bit.
Regards,
Rainer