Brain freeze guys -
I added a property to my object and persisted in the datastore. The
older object have now have a column that when viewed in the control
panel have a value of missing. I need to query those objects so i
can update them - propname == null , propname == - I can't seem
to
You can't. Empty properties are the equivalent of unindexed properties.
You'll need to iterate over all the Entities in your datastore and update
them. The Mapper API is a very good tool for this:
http://code.google.com/p/appengine-mapreduce/
On Mon, Sep 13, 2010 at 12:20 PM, Benjamin
