diff --git a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
index c670bea..b4f65ff 100644
--- a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
+++ b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
@@ -8,21 +8,7 @@ import java.util.Map;
 
 import javax.mail.internet.AddressException;
 
-import org.gcube.portal.databook.shared.Attachment;
-import org.gcube.portal.databook.shared.Comment;
-import org.gcube.portal.databook.shared.Feed;
-import org.gcube.portal.databook.shared.FeedType;
-import org.gcube.portal.databook.shared.Invite;
-import org.gcube.portal.databook.shared.InviteOperationResult;
-import org.gcube.portal.databook.shared.InviteStatus;
-import org.gcube.portal.databook.shared.Like;
-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.Post;
-import org.gcube.portal.databook.shared.PostType;
-import org.gcube.portal.databook.shared.RangeFeeds;
-import org.gcube.portal.databook.shared.RangePosts;
+import org.gcube.portal.databook.shared.*;
 import org.gcube.portal.databook.shared.ex.ColumnNameNotFoundException;
 import org.gcube.portal.databook.shared.ex.CommentIDNotFoundException;
 import org.gcube.portal.databook.shared.ex.FeedIDNotFoundException;
@@ -160,13 +146,28 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	 *
 	 */
 
+	private static Post feed2post(Feed feed){
+		Post post = new Post(feed.getKey(), PostType.valueOf(feed.getType().toString()), feed.getEntityId(), feed.getTime(),
+				feed.getVreid(), feed.getUri(), feed.getUriThumbnail(), feed.getDescription(), feed.getPrivacy(),
+				feed.getFullName(), feed.getEmail(), feed.getThumbnailURL(), feed.getCommentsNo(),
+				feed.getLikesNo(), feed.getLinkTitle(), feed.getLinkDescription(), feed.getLinkHost(), feed.isApplicationFeed(), feed.isMultiFileUpload());
+		return post;
+	}
+
+	private static Feed post2feed(Post post){
+		Feed feed = new Feed(post.getKey(), FeedType.valueOf(post.getType().toString()), post.getEntityId(), post.getTime(),
+				post.getVreid(), post.getUri(), post.getUriThumbnail(), post.getDescription(), post.getPrivacy(),
+				post.getFullName(), post.getEmail(), post.getThumbnailURL(), post.getCommentsNo(),
+				post.getLikesNo(), post.getLinkTitle(), post.getLinkDescription(), post.getLinkHost(), post.isApplicationFeed(), post.isMultiFileUpload());
+		return feed;
+	}
 	/**
 	 * {@inheritDoc}
 	 */
 	@Deprecated
 	@Override
 	public boolean saveUserFeed(Feed post) {
-		return true;
+		return saveUserPost(feed2post(post));
 	}
 	/**
 	 * {@inheritDoc}
@@ -181,7 +182,7 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Deprecated
 	@Override
 	public boolean saveUserFeed(Feed feed, List<Attachment> attachments) {
-		return true;
+		return saveUserPost(feed2post(feed), attachments);
 	}
 	/**
 	 * {@inheritDoc}
@@ -197,7 +198,7 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Override
 	@Deprecated
 	public boolean saveAppFeed(Feed post) {
-		return true;
+		return saveAppPost(feed2post(post));
 	}
 	/**
 	 * {@inheritDoc}
@@ -212,7 +213,7 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Deprecated
 	@Override
 	public boolean saveAppFeed(Feed feed, List<Attachment> attachments) {
-		return true;
+		return saveAppPost(feed2post(feed), attachments);
 	}
 	/**
 	 * {@inheritDoc}
@@ -227,7 +228,7 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Deprecated
 	@Override
 	public boolean saveFeedToVRETimeline(String feedKey, String vreid) throws FeedIDNotFoundException {
-		return true;
+		return savePostToVRETimeline(feedKey, vreid);
 	}
 	/**
 	 * {@inheritDoc}
@@ -245,7 +246,7 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 			throws PrivacyLevelTypeNotFoundException,
 			FeedTypeNotFoundException, FeedIDNotFoundException, ColumnNameNotFoundException {
 
-		return null;
+		return post2feed(readPost(feedid));
 	}
 	/**
 	 * {@inheritDoc}
@@ -265,8 +266,12 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 		Date now = new Date();
 		if (timeInMillis > now.getTime())
 			throw new IllegalArgumentException("the timeInMillis must be before today");
-
-		return null;
+		List<Post> posts = getRecentPostsByUserAndDate(userid, timeInMillis);
+		List<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		return feeds;
 	}
 	/**
 	 * {@inheritDoc}
@@ -285,7 +290,7 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Deprecated
 	@Override
 	public boolean deleteFeed(String feedId) throws FeedIDNotFoundException, PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, ColumnNameNotFoundException {
-		return true;
+		return deletePost(feedId);
 	}
 	/**
 	 * {@inheritDoc}
@@ -300,7 +305,12 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Deprecated
 	@Override
 	public List<Feed> getAllFeedsByUser(String userid) throws PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
-		return null;
+		List<Post> posts = getAllPostsByUser(userid);
+		List<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		return feeds;
 	}
 	/**
 	 * {@inheritDoc}
@@ -314,7 +324,12 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	 */
 	@Override
 	public List<Feed> getAllFeedsByApp(String appid) throws PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
-		return null;
+		List<Post> posts = getAllPostsByApp(appid);
+		List<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		return feeds;
 	}
 	/**
 	 * {@inheritDoc}
@@ -331,7 +346,12 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Override
 	public List<Feed> getRecentCommentedFeedsByUserAndDate(String userid,
 			long timeInMillis) throws Exception {
-		return null;
+		List<Post> posts = getRecentCommentedPostsByUserAndDate(userid, timeInMillis);
+		List<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		return feeds;
 	}
 	/**
 	 * {@inheritDoc}
@@ -348,7 +368,12 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Deprecated
 	@Override
 	public List<Feed> getAllPortalPrivacyLevelFeeds() throws FeedTypeNotFoundException, ColumnNameNotFoundException, PrivacyLevelTypeNotFoundException {
-		return null;
+		List<Post> posts = getAllPortalPrivacyLevelPosts();
+		List<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		return feeds;
 	}
 	@Override
 	public List<Post> getAllPortalPrivacyLevelPosts() throws FeedTypeNotFoundException, ColumnNameNotFoundException, PrivacyLevelTypeNotFoundException {
@@ -360,7 +385,12 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Override
 	@Deprecated
 	public List<Feed> getRecentFeedsByUser(String userid, int quantity)	throws PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
-		return null;
+		List<Post> posts = getRecentPostsByUser(userid, quantity);
+		List<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		return feeds;
 	}
 	@Override
 	public List<Post> getRecentPostsByUser(String userid, int quantity)	throws PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
@@ -372,7 +402,12 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Override
 	@Deprecated
 	public List<Feed> getAllFeedsByVRE(String vreid) throws PrivacyLevelTypeNotFoundException, FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
-		return null;
+		List<Post> posts = getAllPostsByVRE(vreid);
+		List<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		return feeds;
 	}
 	/**
 	 * {@inheritDoc}
@@ -387,7 +422,12 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	@Deprecated
 	@Override
 	public List<Feed> getRecentFeedsByVRE(String vreid, int quantity) throws PrivacyLevelTypeNotFoundException,	FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
-		return null;
+		List<Post> posts = getRecentPostsByVRE(vreid, quantity);
+		List<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		return feeds;
 	}
 	@Override
 	public List<Post> getRecentPostsByVRE(String vreid, int quantity) throws PrivacyLevelTypeNotFoundException,	FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
@@ -398,7 +438,14 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	 */
 	@Override
 	public RangeFeeds getRecentFeedsByVREAndRange(String vreid, int from, int quantity) throws IllegalArgumentException, PrivacyLevelTypeNotFoundException,	FeedTypeNotFoundException, ColumnNameNotFoundException, FeedIDNotFoundException {
-		return null;
+		RangePosts rangePosts = getRecentPostsByVREAndRange(vreid, from, quantity);
+		List<Post> posts = rangePosts.getPosts();
+		ArrayList<Feed> feeds = new ArrayList<>();
+		for(Post post: posts){
+			feeds.add(post2feed(post));
+		}
+		RangeFeeds rangeFeeds = new RangeFeeds(rangePosts.getLastReturnedPostTimelineIndex(), feeds);
+		return rangeFeeds;
 	}
 	/**
 	 * {@inheritDoc}