> 2. how to combine the results from all these classes and list the
> comments by date? I dont understanding this part. any sample code on
> this?
you will need 3 queries.
one query for each entity.
each queries will need to be executed individualy.
ie (puesdo code)
pm.execute("select c.text from CommentA c where date=?")
pm.execute("select c.text from CommentB c where date=?")
pm.execute("select c.text from CommentC c where date=?")
so your write may be fast but now your reads will be slow.
u cant 'OR' the queries since they are different entities.
This solution doesnt look like a scalable solution for bigtable.
was the article for SQL tables NOT bigtable?
-lp
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