Reusability of CAF is Possible.

Question

hi
Reusability of CAF is Possible. 
If it is possible send me what is the advantages and disadvantages.
Thanks

Answer 1

Hi Shiva,
For reusability in composites you have to look at the framework/anatomy of composites.
a)<b>Process Layer-GP</b>
<b>b)UI Layer-VC,Webdynpro,Adobe</b>
<b>c)Business Logic/Service Layer-CAF Core</b>
So the changes in your requirement could be in a,b or c.
Lets take a fictional composite process aprroval of <b>leave from manager</b>.
GP process contains 1 block and 3 actions namely employee apply for leave form,
manager approval/reject form,display form to employee.
For UI layer we use Adobe with one template form and hide or make invisible certain fields depending on who sees the form employee or manager.
Service Layer-Here you call the ESA service which does the backend bit.
New requirement is <b>HR approval for leave</b> and not manager (Hope this never happens!)
So what do we do now...we have to adapt our composite to the new requirements.
1)Reuse the block for Manager along with action and callable object
2)Modify the xdp files in Adobe and update callable objects
3)Change the endpoiot configuration of your ESA service to call a new service HR approval.
4)Update mapping at all layers.
What we just did is we saved a lot of development effort by doing the appliction from scratch.
Hope this example was helpful.
Regards,.
As mentioned by Piyush,in GP you can reuse the blocks,actions and callable objects.
In UI for eg you have adobe foms to be used in multiple stages of the process,the features of Adobe lets you create one xdp template and reuse it across the process by hiding/adding/removing fields