orm - How to make an optimal hibernate query with three objects? -

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i have query don't know how make optimal. have 3 objects.

  • scp
  • question : has field points scp (scp_id)
  • answer : has field points question (question_id)

how can make query counts number of answer within given scp

what this:

select count(a)  answer  a.question.scp.id = :id

which generates following sql:

select   count(answer0_.id) col_0_0_     answer answer0_,   question question1_     answer0_.question_id=question1_.id    , question1_.scp_id=?

seems pretty efficient.


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