added My Favorites Filter support methods

git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/portal/social-networking-library@68733 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java

@@ -1195,6 +1195,33 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 		}
 		return toReturn;
 	}
+	/**
+	 * {@inheritDoc} 
+	 */
+	@Override
+	public List<Feed> getAllLikedFeedsByUser(String userid, int limit) throws PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
+		ArrayList<Feed> toReturn = new ArrayList<Feed>();
+		List<String> likedFeedIDs = getAllLikedFeedIdsByUser(userid);
+
+		//check if quantity is greater than user feeds
+		limit = (limit > likedFeedIDs.size()) ? likedFeedIDs.size() : limit;
+
+		//need them in reverse order		
+		for (int i = likedFeedIDs.size()-1; i >= (likedFeedIDs.size()-limit); i--) {
+			Feed toAdd = readFeed(likedFeedIDs.get(i));
+			if (toAdd.getType() == FeedType.TWEET || toAdd.getType() == FeedType.SHARE || toAdd.getType() == FeedType.PUBLISH) {
+				toReturn.add(toAdd);
+				_log.trace("Read recent feed: " + likedFeedIDs.get(i));
+			} else {
+				_log.trace("Read and skipped feed: " + likedFeedIDs.get(i) + " (Removed Feed)");
+				limit += 1; //increase the quantity in case of removed feed
+				//check if quantity is greater than user feeds
+				limit = (limit > likedFeedIDs.size()) ? likedFeedIDs.size() : limit;
+			}
+		}
+		return toReturn;
+	}
+
 	/**
 	 * {@inheritDoc}
 	 */
@@ -1266,7 +1293,7 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 		else
 			throw new NotificationChannelTypeNotFoundException("The Notification Channel Type was not recognized should be one of " + NotificationChannelType.values() + " asked for: " + channelName);
 	}
-	
+
 	/**
 	 * simply return an enum representing the privacy level
 	 * @param privacyLevel .

src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java

@@ -16,8 +16,11 @@ import org.gcube.portal.databook.shared.Notification;
 import org.gcube.portal.databook.shared.NotificationChannelType;
 import org.gcube.portal.databook.shared.NotificationType;
 import org.gcube.portal.databook.shared.PrivacyLevel;
+import org.gcube.portal.databook.shared.ex.ColumnNameNotFoundException;
 import org.gcube.portal.databook.shared.ex.FeedIDNotFoundException;
+import org.gcube.portal.databook.shared.ex.FeedTypeNotFoundException;
 import org.gcube.portal.databook.shared.ex.NotificationChannelTypeNotFoundException;
+import org.gcube.portal.databook.shared.ex.PrivacyLevelTypeNotFoundException;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -27,7 +30,7 @@ public class DatabookCassandraTest {
 
 	@BeforeClass
 	public static void setup() throws Exception {
-		store = new DBCassandraAstyanaxImpl(true); //set to true if you want to drop the KeySpace and recreate it
+		store = new DBCassandraAstyanaxImpl(false); //set to true if you want to drop the KeySpace and recreate it
 	}
 
 	@AfterClass
@@ -58,16 +61,26 @@ public class DatabookCassandraTest {
 		}
 
 	}
+	@Test
+	public void testLikedFeedsRetrieval() {
+		try {
+			for (Feed feed : store.getAllLikedFeedsByUser("luca.frosini", 10)) {
+				System.out.println(feed);
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+		} 
+	}
 	
 	@Test
 	public void testNotificationSettings() {
-//		try {
+		try {
-//			for (NotificationChannelType channel : store.getUserNotificationChannels("luca.frosini")) {
+			for (NotificationChannelType channel : store.getUserNotificationChannels("luca.frosini")) {
-//				System.out.println(channel);
+				System.out.println(channel);
-//			}
+			}
-//		} catch (NotificationChannelTypeNotFoundException e) {
+		} catch (NotificationChannelTypeNotFoundException e) {
-//			e.printStackTrace();
+			e.printStackTrace();
-//		};
+		};
 //		store.setUserNotificationChannel("luca.frosini", NotificationChannelType.EMAIL, true);
 	}
 

src/main/java/org/gcube/portal/databook/server/DatabookStore.java

@@ -20,7 +20,7 @@ import org.gcube.portal.databook.shared.ex.PrivacyLevelTypeNotFoundException;
 /**
  * @author Massimiliano Assante ISTI-CNR
  * 
- * @version 0.5 Oct 5th 2012
+ * @version 1.0 Feb 2013
  * <class>DatabookStore</class> is the high level interface for querying and adding data to DatabookStore 
  */
 public interface DatabookStore {
@@ -154,7 +154,7 @@ public interface DatabookStore {
 
 	/**
 	 * @param userid user identifier
-	 * @param limit set 0 to get everything, an int to get the most -limit- notifications
+	 * @param limit set 0 to get everything, an int to get the most recent -limit- notifications
 	 * return all the notifications belonging to the userid up to limit, set 0 to get everything
 	 * @throws NotificationTypeNotFoundException 
 	 * @throws ColumnNameNotFoundException 
@@ -255,7 +255,7 @@ public interface DatabookStore {
 	/**
 	 * unlike a feed 
 	 * @param likeid the like identifier to delete
-	 * @parma feedid the feedid to shich the comment is associated
+	 * @param feedid the feedid to shich the comment is associated
 	 * @return true if success, false otherwise
 	 */
 	boolean unlike(String likeid, String feedid) throws PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, ColumnNameNotFoundException, LikeIDNotFoundException, FeedIDNotFoundException;
@@ -264,6 +264,17 @@ public interface DatabookStore {
 	 * return all the feedids a user has liked
 	 */
 	List<String> getAllLikedFeedIdsByUser(String userid);
+	/**
+	 * @param userid user identifier
+	 * @param limit set 0 to get everything, an int to get the most recent -limit- liked feeds
+	 * @throws ColumnNameNotFoundException .
+	 * @throws FeedIDNotFoundException .
+	 * @throws FeedTypeNotFoundException . 
+	 * @throws PrivacyLevelTypeNotFoundException 
+	 * @throws FeedIDNotFoundException .
+	 * return all the feeds a user has liked
+	 */
+	List<Feed> getAllLikedFeedsByUser(String userid, int limit) throws PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, FeedIDNotFoundException, ColumnNameNotFoundException;
 	/**
 	 * @param feedid feed identifier
 	 * return all the likes belonging to the feedid