Hibernate Subquery and DetachedCriteria

Posted by dawez on Stack Overflow See other posts from Stack Overflow or by dawez
Published on 2010-05-07T09:04:25Z Indexed on 2010/05/07 9:08 UTC
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I have created a DetachedCriteria that is retrieving estates that have the isApproved and isPublished set to true. It is defined in this way:

DetachedCriteria activePublishedCriteria = DetachedCriteria.forClass(Estate.class)
    .add(Restrictions.eq("isApproved", true))
    .add(Restrictions.eq("isPublished", true))
    .setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY);

I would like to reuse this criteria in some of the queries. In this case I would like to replace the isApproved and isPublished restrictions with the DetachedCriteria

Criteria criteria = getSession().createCriteria(Estate.class)
       .createAlias("city", "c")
       .add(Restrictions.eq("c.id", cityID))
       // the following 2 lines should be use the DetachedCriteria 
       .add(Restrictions.eq("isApproved", true))
       .add(Restrictions.eq("isPublished", true))
       .setProjection(Projections.rowCount());
  return (Integer) criteria.list().get(0);

Is there a way to do this ? Tried to use

.add.Subqueries.geAll(....

But cannot make it work properly. I could not find proper documentation on the Subqueries in Hibernate. Tips are welcomed.

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