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 08d5bf0..022f6d2 100644
--- a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
+++ b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
@@ -3546,11 +3546,10 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 		return boundStatements;
 	}
 	/**
-	 * @param feedId the feedId to which the attachment is attached
-	 * @param toSave the instance to save
-	 * @return true if the attachemnt entry is saved in the Attachments CF
+	 * {@inheritDoc}
 	 */
-	private boolean saveAttachmentEntry(String feedId, Attachment toSave) {
+	@Override
+	public boolean saveAttachmentEntry(String feedId, Attachment toSave) {
 		// Inserting data
 		CqlSession session = conn.getKeyspaceSession();
 		//an entry in the Attachment CF
diff --git a/src/main/java/org/gcube/portal/databook/server/DatabookStore.java b/src/main/java/org/gcube/portal/databook/server/DatabookStore.java
index 95af072..6235830 100644
--- a/src/main/java/org/gcube/portal/databook/server/DatabookStore.java
+++ b/src/main/java/org/gcube/portal/databook/server/DatabookStore.java
@@ -654,6 +654,11 @@ public interface DatabookStore {
 	 */
 	List<Attachment> getAttachmentsByFeedId(String feedId) throws FeedIDNotFoundException;
 
+	/**
+	 * save an attachment
+	 */
+	boolean saveAttachmentEntry(String feedId, Attachment toSave);
+
 	/**
 	 * Retrieve all the ids of the vre
 	 * @return the set of ids of the vre available or empty list in case of errors.
diff --git a/src/main/java/org/gcube/portal/databook/shared/PostWithAttachment.java b/src/main/java/org/gcube/portal/databook/shared/PostWithAttachment.java
index 948dcc3..23a5850 100644
--- a/src/main/java/org/gcube/portal/databook/shared/PostWithAttachment.java
+++ b/src/main/java/org/gcube/portal/databook/shared/PostWithAttachment.java
@@ -3,6 +3,7 @@ package org.gcube.portal.databook.shared;
 import java.io.Serializable;
 import java.util.List;
 
+@SuppressWarnings("serial")
 public class PostWithAttachment implements Serializable {
     private Post post;
     private List<Attachment> attachments;
@@ -28,4 +29,28 @@ public class PostWithAttachment implements Serializable {
     public Post getPost() {
         return post;
     }
+
+    public String toString() {
+        String postInfo = "Post [key=" + post.getKey() + ", type=" + post.getType() + ", entityId=" + post.getEntityId()
+                + ", time=" + post.getTime() + ", vreid=" + post.getVreid() + ", uri=" + post.getUri()
+                + ", uriThumbnail=" + post.getUriThumbnail() + ", description="
+                + post.getDescription() + ", privacy=" + post.getPrivacy() + ", fullName="
+                + post.getFullName() + ", email=" + post.getEmail() + ", thumbnailURL="
+                + post.getThumbnailURL() + ", commentsNo=" + post.getCommentsNo() + ", likesNo="
+                + post.getLikesNo() + ", linkTitle=" + post.getLinkTitle() + ", linkDescription="
+                + post.getLinkDescription() + ", linkHost=" + post.getLinkHost()
+                + ", applicationFeed=" + post.isApplicationFeed()
+                + ", multiFileUpload=" + post.isMultiFileUpload() + "]";
+        String attachmentInfo = "[Attachments: ";
+        for (Attachment attachment: attachments){
+            attachmentInfo += "[Attachment [key=" + attachment.getId() + ", uri=" + attachment.getUri() + ", name=" + attachment.getName() + ", description="
+                    + attachment.getDescription() + ", thumbnailURL=" + attachment.getThumbnailURL()
+                    + ", mimeType=" + attachment.getMimeType() + "]],";
+        }
+        attachmentInfo = attachmentInfo.substring(0, attachmentInfo.length()-1);
+        attachmentInfo += "]";
+        ;
+
+        return "[" + postInfo + ", " + attachmentInfo + "]" ;
+    }
 }