/**
  * Get a list containg all teh case studies in the database
  *
  * @return List<CaseStudy> containg all the case studies in the database
  */
 public static List<CaseStudy> getAllCaseStudy() {
   if (database == null) {
     return new LinkedList<CaseStudy>();
   } else {
     return database.getAllCaseStudy();
   }
 }