major classes refactoring

src/main/java/com/commafeed/backend/services/FeedSubscriptionService.java

@@ -0,0 +1,75 @@
+package com.commafeed.backend.services;
+
+import java.util.List;
+
+import javax.ejb.Stateless;
+import javax.inject.Inject;
+
+import com.commafeed.backend.dao.FeedCategoryDAO;
+import com.commafeed.backend.dao.FeedDAO;
+import com.commafeed.backend.dao.FeedEntryDAO;
+import com.commafeed.backend.dao.FeedEntryStatusDAO;
+import com.commafeed.backend.dao.FeedSubscriptionDAO;
+import com.commafeed.backend.model.Feed;
+import com.commafeed.backend.model.FeedCategory;
+import com.commafeed.backend.model.FeedEntry;
+import com.commafeed.backend.model.FeedEntryStatus;
+import com.commafeed.backend.model.FeedSubscription;
+import com.commafeed.backend.model.User;
+import com.google.api.client.util.Lists;
+
+@Stateless
+public class FeedSubscriptionService {
+
+	@Inject
+	FeedCategoryDAO feedCategoryDAO;
+
+	@Inject
+	FeedDAO feedDAO;
+
+	@Inject
+	FeedEntryDAO feedEntryDAO;
+
+	@Inject
+	FeedEntryStatusDAO feedEntryStatusDAO;
+
+	@Inject
+	FeedSubscriptionDAO feedSubscriptionDAO;
+
+	public void subscribe(User user, String url, String title,
+			FeedCategory category) {
+
+		Feed feed = feedDAO.findByUrl(url);
+		if (feed == null) {
+			feed = new Feed();
+			feed.setUrl(url);
+			feedDAO.save(feed);
+		}
+
+		FeedSubscription sub = feedSubscriptionDAO.findByFeed(user, feed);
+		boolean newSubscription = false;
+		if (sub == null) {
+			sub = new FeedSubscription();
+			sub.setFeed(feed);
+			sub.setUser(user);
+			newSubscription = true;
+		}
+		sub.setCategory(category);
+		sub.setTitle(title);
+		feedSubscriptionDAO.saveOrUpdate(sub);
+
+		if (newSubscription) {
+			List<FeedEntryStatus> statuses = Lists.newArrayList();
+			List<FeedEntry> allEntries = feedEntryDAO.findByFeed(feed, 0,
+					10);
+			for (FeedEntry entry : allEntries) {
+				FeedEntryStatus status = new FeedEntryStatus();
+				status.setEntry(entry);
+				status.setRead(true);
+				status.setSubscription(sub);
+				statuses.add(status);
+			}
+			feedEntryStatusDAO.save(statuses);
+		}
+	}
+}