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materialize the manytomany relationship to have better control over queries

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Athou
2013-07-04 23:40:25 +02:00
parent d57a1c9e2a
commit 4efa18f9e6
8 changed files with 110 additions and 70 deletions
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19
src/main/java/com/commafeed/backend/dao/FeedEntryDAO.java
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@@ -18,7 +18,8 @@ import org.slf4j.LoggerFactory;
import com.commafeed.backend.model.Feed;
import com.commafeed.backend.model.FeedEntry;
import com.commafeed.backend.model.FeedEntry_;
import com.commafeed.backend.model.Feed_;
import com.commafeed.backend.model.FeedFeedEntry;
import com.commafeed.backend.model.FeedFeedEntry_;
import com.commafeed.backend.services.ApplicationSettingsService;
import com.google.common.collect.Iterables;
@@ -33,11 +34,11 @@ public class FeedEntryDAO extends GenericDAO<FeedEntry> {
public static class EntryWithFeed {
public FeedEntry entry;
public Feed feed;
public FeedFeedEntry ffe;
public EntryWithFeed(FeedEntry entry, Feed feed) {
public EntryWithFeed(FeedEntry entry, FeedFeedEntry ffe) {
this.entry = entry;
this.feed = feed;
this.ffe = ffe;
}
}
@@ -52,7 +53,7 @@ public class FeedEntryDAO extends GenericDAO<FeedEntry> {
EntryWithFeed result = null;
List<EntryWithFeed> list = q.getResultList();
for (EntryWithFeed ewf : list) {
if (ewf.entry != null && ewf.feed != null) {
if (ewf.entry != null && ewf.ffe != null) {
result = ewf;
break;
}
@@ -66,9 +67,9 @@ public class FeedEntryDAO extends GenericDAO<FeedEntry> {
public List<FeedEntry> findByFeed(Feed feed, int offset, int limit) {
CriteriaQuery<FeedEntry> query = builder.createQuery(getType());
Root<FeedEntry> root = query.from(getType());
SetJoin<FeedEntry, Feed> feedsJoin = root.join(FeedEntry_.feeds);
SetJoin<FeedEntry, FeedFeedEntry> feedsJoin = root.join(FeedEntry_.feedRelationships);
query.where(builder.equal(feedsJoin.get(Feed_.id), feed.getId()));
query.where(builder.equal(feedsJoin.get(FeedFeedEntry_.feed), feed));
query.orderBy(builder.desc(root.get(FeedEntry_.updated)));
TypedQuery<FeedEntry> q = em.createQuery(query);
limit(q, offset, limit);
@@ -94,9 +95,9 @@ public class FeedEntryDAO extends GenericDAO<FeedEntry> {
CriteriaQuery<FeedEntry> query = builder.createQuery(getType());
Root<FeedEntry> root = query.from(getType());
SetJoin<FeedEntry, Feed> join = root.join(FeedEntry_.feeds,
SetJoin<FeedEntry, FeedFeedEntry> join = root.join(FeedEntry_.feedRelationships,
JoinType.LEFT);
query.where(builder.isNull(join.get(Feed_.id)));
query.where(builder.isNull(join.get(FeedFeedEntry_.feed)));
TypedQuery<FeedEntry> q = em.createQuery(query);
q.setMaxResults(max);