[appengine-java] Re: How do I migrate old data (change schema) in a deployed Java app?

2011-06-09 Thread Sandeepa Nadahalli
Hello,

I have the same problem. But your solution is not working for me.

Can you help?

Thanks,
SN

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[appengine-java] Re: How do I migrate old data (change schema) in a deployed Java app?

2011-06-09 Thread Nathan Stiles
What is this DataViewer?  How do I use this?  Eclipse?

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[appengine-java] Re: How do I migrate old data (change schema) in a deployed Java app?

2011-06-10 Thread Didier Durand
The data viewer is accessible from the management console in your
account: you can see what's in your datastore in all details.

regards

didier

On Jun 10, 5:12 am, Nathan Stiles  wrote:
> What is this DataViewer?  How do I use this?  Eclipse?

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[appengine-java] Re: How do I migrate old data (change schema) in a deployed Java app?

2011-06-11 Thread Nathan Stiles
Oh I see.  I was thinking you meant something else.  I was imagining 
something that specifically aids in data object design in eclipse or some 
other IDE.

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[appengine-java] Re: How do I migrate old data (change schema) in a deployed Java app?

2011-06-14 Thread Cyrille Vincey
Data schema change is quite easy if you use a MapReduce job.
See 
http://ikaisays.com/2010/07/09/using-the-java-mapper-framework-for-app-engine/

You can still use your JDO instructions in a mapper, even if the mapper 
performance is not at its best if not using the low-level API.

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