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delete entries with no feeds

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Athou
2013-07-04 21:50:39 +02:00
parent 4c1c9aef6f
commit d57a1c9e2a
3 changed files with 32 additions and 0 deletions
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17
src/main/java/com/commafeed/backend/dao/FeedEntryDAO.java
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@@ -7,6 +7,7 @@ import javax.ejb.Stateless;
import javax.inject.Inject;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.JoinType;
import javax.persistence.criteria.Root;
import javax.persistence.criteria.SetJoin;
@@ -88,4 +89,20 @@ public class FeedEntryDAO extends GenericDAO<FeedEntry> {
delete(list);
return deleted;
}
public int deleteWithoutFeeds(int max) {
CriteriaQuery<FeedEntry> query = builder.createQuery(getType());
Root<FeedEntry> root = query.from(getType());
SetJoin<FeedEntry, Feed> join = root.join(FeedEntry_.feeds,
JoinType.LEFT);
query.where(builder.isNull(join.get(Feed_.id)));
TypedQuery<FeedEntry> q = em.createQuery(query);
q.setMaxResults(max);
List<FeedEntry> list = q.getResultList();
int deleted = list.size();
delete(list);
return deleted;
}
}