Merge between document and data coming from a web form

[Olivier Truemat]

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