Hello,
I'm using low-level datastore API and its Query class to filter
entities.
I put two entities to datastore: the first has set a property 'list'
to null and the second has the same property set to [null] (a list
containing one null value).
The following query will find both of them - that's ok:
new Query("MyEntity").addFilter( "list", Query.FilterOperator.EQUAL,
null)
But is there a way (using GAE API only) to filter only the first
entity or only the second one ?
The full code is on my blog:
http://vaclavb.blogspot.com/2010/02/lists-and-nulls-in-google-app-engine.html
Vaclav
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