Hi Sam,

Impossible to answer that, unfortunately. "It depends" is the closest 
honest answer you'll get.

If you just have a Java app that is working, you'll probably find that 
putting it on a normal VM will have the least impact on your required 
effort.  It's possible that it could work almost out of the box, but in the 
vast majority of cases you need to design for the datastore in mind or 
spend non-trivial effort retrofitting a SQL-oriented app to work with the 
key-value-plus-queries approach.  If you do any SELECT SUM(*) FROM X GROUP 
BY Y stuff, be prepared to hand-code all that.

Richard

On Wednesday, October 3, 2012 9:33:20 AM UTC+2, Sam Towers wrote:
>
> Hi All
>
> I have an app that is written in C++. It has been ported to Java.
> Is it easy to port this to GAE? GAE runs Python and Java, so is it a 
> simple cut and paste job to the Java flavor ?
>
> Cheers
>
> Sam
>

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