Dear all,

The project we are currently working on requires to merge a document 
(stored in the blobstore or in the client google account) and data coming 
from the web form.

The web site will serve +/- 1,000 clients. Each client has more or less 10 
templates. The merge is on request from the client but should be 
approximatively 10 requests per month.

Did anyone has an idea how to implement this ? The solutions which came to 
my mind are :

*I. Use the Google docs services *

Problem is that it is not possible to update a document (only possible to 
update a spreadsheet).

*II. Store the template as a blob, retrieve it when needed and update it on 
request*

This type of functionality requires third-party libraries (POI or 
JODReports) which require a "File" implementation in Java. I have tried to 
retrieve the file from the blobstore using AppEngineFile however it is not 
possible the interfaces are not the same.

*III. Using an external service*

That could be an option, has anyone of you already used these services ?


Any idea would be more than welcome !


Cheers,

Olivier

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