Create new constructor for ReinscriptionRequest so you don't have to worry about the type of the request

backend/src/main/java/ovh/herisson/Clyde/Tables/ReinscriptionRequest.java

@@ -31,6 +31,12 @@ public class ReinscriptionRequest {
         this.type = type;
     }
 
+    public ReinscriptionRequest(User user, Cursus newCursus, RequestState state){
+        this.user = user;
+        this.newCursus = newCursus;
+        this.state = state;
+    }
+
     public int getId() {
         return id;
     }