I’m with app engine and using the java low level api, and I want to retrieve a group of entities having its ids. What’s the way to do so? I could fetch one by one but there must be a better way.
Thanks!
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I’m with app engine and using the java low level api, and I want to retrieve a group of entities having its ids. What’s the way to do so? I could fetch one by one but there must be a better way.
Thanks!
I think you’re looking for this method, specifically in the following overload:
to which you pass any iterable collection of
Keys and get back a map from those keys (more precisely, the subset of those keys that do correspond to entities) onto the corresponding entities. (To make aKeyfrom anidyou use a KeyFactory — variouscreateKeyoverloads, depending on parent or no parent). Back toget, there’s a transactional overload for it too, if you do need to work in a transaction.