Files
Athou_commafeed/src/main/java/com/commafeed/backend/dao/FeedEntryService.java
2013-04-09 11:10:26 +02:00

97 lines
2.7 KiB
Java

package com.commafeed.backend.dao;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collection;
import java.util.List;
import javax.ejb.Stateless;
import javax.inject.Inject;
import org.apache.commons.lang.ObjectUtils;
import org.apache.commons.lang.StringUtils;
import com.commafeed.backend.model.Feed;
import com.commafeed.backend.model.FeedEntry;
import com.commafeed.backend.model.FeedEntryStatus;
import com.commafeed.backend.model.FeedSubscription;
import com.commafeed.frontend.utils.ModelFactory.MF;
import com.google.common.collect.Lists;
import com.uaihebert.model.EasyCriteria;
@Stateless
@SuppressWarnings("serial")
public class FeedEntryService extends GenericDAO<FeedEntry> {
@Inject
FeedService feedService;
@Inject
FeedSubscriptionService feedSubscriptionService;
public void updateEntries(String url, Collection<FeedEntry> entries) {
Feed feed = feedService.findByUrl(url);
List<String> guids = Lists.newArrayList();
for (FeedEntry entry : entries) {
guids.add(entry.getGuid());
}
List<FeedEntry> existingEntries = guids.isEmpty() ? new ArrayList<FeedEntry>()
: getByGuids(guids);
for (FeedEntry entry : entries) {
FeedEntry foundEntry = null;
for (FeedEntry existingEntry : existingEntries) {
if (StringUtils
.equals(entry.getGuid(), existingEntry.getGuid())) {
foundEntry = existingEntry;
break;
}
}
if (foundEntry == null) {
entry.setInserted(Calendar.getInstance().getTime());
addFeedToEntry(entry, feed);
} else {
boolean foundFeed = false;
for (Feed existingFeed : foundEntry.getFeeds()) {
if (ObjectUtils.equals(existingFeed.getId(), feed.getId())) {
foundFeed = true;
break;
}
}
if (!foundFeed) {
addFeedToEntry(foundEntry, feed);
}
}
}
feed.setLastUpdated(Calendar.getInstance().getTime());
feed.setMessage(null);
feed.setErrorCount(0);
feedService.update(feed);
}
private void addFeedToEntry(FeedEntry entry, Feed feed) {
entry.getFeeds().add(feed);
saveOrUpdate(entry);
List<FeedSubscription> subscriptions = feedSubscriptionService
.findByFeed(feed);
for (FeedSubscription sub : subscriptions) {
FeedEntryStatus status = new FeedEntryStatus();
status.setEntry(entry);
status.setSubscription(sub);
em.persist(status);
}
}
public List<FeedEntry> getByGuids(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();
}
}