major classes refactoring

src/main/java/com/commafeed/backend/dao/FeedEntryDAO.java

@@ -0,0 +1,38 @@
+package com.commafeed.backend.dao;
+
+import java.util.List;
+
+import javax.ejb.Stateless;
+import javax.persistence.TypedQuery;
+import javax.persistence.criteria.CriteriaQuery;
+import javax.persistence.criteria.Root;
+
+import com.commafeed.backend.model.Feed;
+import com.commafeed.backend.model.FeedEntry;
+import com.commafeed.backend.model.FeedEntry_;
+import com.commafeed.frontend.utils.ModelFactory.MF;
+import com.uaihebert.model.EasyCriteria;
+
+@Stateless
+@SuppressWarnings("serial")
+public class FeedEntryDAO extends GenericDAO<FeedEntry> {
+
+	public List<FeedEntry> findByGuids(List<String> guids) {
+		EasyCriteria<FeedEntry> criteria = createCriteria();
+		criteria.setDistinctTrue();
+		criteria.andStringIn(MF.i(proxy().getGuid()), guids);
+		criteria.leftJoinFetch(MF.i(proxy().getFeeds()));
+		return criteria.getResultList();
+	}
+
+	public List<FeedEntry> findByFeed(Feed feed, int offset, int limit) {
+		CriteriaQuery<FeedEntry> query = builder.createQuery(getType());
+		Root<FeedEntry> root = query.from(getType());
+		query.where(builder.isMember(feed, root.get(FeedEntry_.feeds)));
+		query.orderBy(builder.desc(root.get(FeedEntry_.updated)));
+		TypedQuery<FeedEntry> q = em.createQuery(query);
+		q.setFirstResult(offset);
+		q.setMaxResults(limit);
+		return q.getResultList();
+	}
+}