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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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14
src/main/java/com/commafeed/backend/services/FeedUpdateService.java
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@@ -5,6 +5,8 @@ import java.util.List;
import javax.ejb.Stateless;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import com.commafeed.backend.MetricsBean;
import com.commafeed.backend.cache.CacheService;
@@ -17,12 +19,16 @@ import com.commafeed.backend.model.Feed;
import com.commafeed.backend.model.FeedEntry;
import com.commafeed.backend.model.FeedEntryContent;
import com.commafeed.backend.model.FeedEntryStatus;
import com.commafeed.backend.model.FeedFeedEntry;
import com.commafeed.backend.model.FeedSubscription;
import com.commafeed.backend.model.User;
import com.google.common.collect.Lists;
@Stateless
public class FeedUpdateService {
@PersistenceContext
protected EntityManager em;
@Inject
FeedSubscriptionDAO feedSubscriptionDAO;
@@ -46,6 +52,7 @@ public class FeedUpdateService {
entry.getUrl(), feed.getId());
FeedEntry update = null;
FeedFeedEntry ffe = null;
if (existing == null) {
entry.setAuthor(FeedUtils.truncate(FeedUtils.handleContent(
entry.getAuthor(), feed.getLink(), true), 128));
@@ -56,11 +63,11 @@ public class FeedUpdateService {
feed.getLink(), false));
entry.setInserted(new Date());
entry.getFeeds().add(feed);
ffe = new FeedFeedEntry(feed, entry);
update = entry;
} else if (existing.feed == null) {
existing.entry.getFeeds().add(feed);
} else if (existing.ffe == null) {
ffe = new FeedFeedEntry(feed, existing.entry);
update = existing.entry;
}
@@ -78,6 +85,7 @@ public class FeedUpdateService {
cache.invalidateUserData(users.toArray(new User[0]));
feedEntryDAO.saveOrUpdate(update);
feedEntryStatusDAO.saveOrUpdate(statusUpdateList);
em.persist(ffe);
metricsBean.entryUpdated(statusUpdateList.size());
}
}