Improved authorship checking code

src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java

@@ -243,7 +243,9 @@ public class CKANPackage extends CKAN implements Moderated {
 				if(result.get(AUTHOR_EMAIL_KEY).asText().compareTo(authorEmail)!=0) {
 					throw new BadRequestException("Only Catalogue-Admins or above can change the authorship (i.e. " + AUTHOR_EMAIL_KEY + " field) of an item.");
 				}
-
+			}else {
+				// The service can't perform any check on author information provide by Catalogue-Admin or above,
+				// so the service assumes the information provided as correct. 
 			}
 		}
 		return objectNode;
@@ -339,6 +341,8 @@ public class CKANPackage extends CKAN implements Moderated {
 				objectNode.put(MAINTAINER_KEY, authorName);
 				objectNode.put(MAINTAINER_EMAIL_KEY, authorEmail);
 			}else {
+				// We could try to retrieve Surname and Name of the maintainer if
+				// he/she is present as user in the VRE or in the catalogue.
 				objectNode.put(MAINTAINER_KEY, objectNode.get(MAINTAINER_EMAIL_KEY).toString());
 			}
 		}