removed wicket and tomee, use dropwizard instead. remove wro4j, use gulp instead

src/main/java/com/commafeed/backend/service/FeedUpdateService.java

@@ -0,0 +1,39 @@
+package com.commafeed.backend.service;
+
+import java.util.Date;
+
+import lombok.AllArgsConstructor;
+
+import org.apache.commons.codec.digest.DigestUtils;
+
+import com.commafeed.backend.dao.FeedEntryDAO;
+import com.commafeed.backend.model.Feed;
+import com.commafeed.backend.model.FeedEntry;
+import com.commafeed.backend.model.FeedEntryContent;
+
+@AllArgsConstructor
+public class FeedUpdateService {
+
+	private final FeedEntryDAO feedEntryDAO;
+	private final FeedEntryContentService feedEntryContentService;
+
+	/**
+	 * this is NOT thread-safe
+	 */
+	public boolean addEntry(Feed feed, FeedEntry entry) {
+
+		Long existing = feedEntryDAO.findExisting(entry.getGuid(), feed);
+		if (existing != null) {
+			return false;
+		}
+
+		FeedEntryContent content = feedEntryContentService.findOrCreate(entry.getContent(), feed.getLink());
+		entry.setGuidHash(DigestUtils.sha1Hex(entry.getGuid()));
+		entry.setContent(content);
+		entry.setInserted(new Date());
+		entry.setFeed(feed);
+
+		feedEntryDAO.saveOrUpdate(entry);
+		return true;
+	}
+}