Index: sources/model/MAbstract.h
===================================================================
diff -u -r61f16c988a159401c92730b4cbfca5085c77222f -r97d593e2e7adb36f2f9f97f9bb9958dcef740bc1
--- sources/model/MAbstract.h	(.../MAbstract.h)	(revision 61f16c988a159401c92730b4cbfca5085c77222f)
+++ sources/model/MAbstract.h	(.../MAbstract.h)	(revision 97d593e2e7adb36f2f9f97f9bb9958dcef740bc1)
@@ -73,19 +73,37 @@
     };
 
 private:
-    const QMap<Type_Enum,QString> _typeText {
-        {Type_Enum::eDatum, "D"},
-        {Type_Enum::eEvent, "E"}
-    };
+    typedef QMap<Type_Enum,QString> TypeMap;
+    static const TypeMap _typeText;
+    static const TypeMap _typeText_make() {
+        static const TypeMap map {
+            {MAbstract::Type_Enum::eDatum, "D"},
+            {MAbstract::Type_Enum::eEvent, "E"}
+        };
+        return map;
+    }
 
-    const QMap<Unit_Enum,QString> _unitText {
-        {Unit_Enum::eUI, "UI"},
-        {Unit_Enum::eHD, "HD"},
-        {Unit_Enum::eDG, "DG"},
-        {Unit_Enum::eDV, "DV"}
-    };
+    typedef QMap<Unit_Enum,QString> UnitMap;
+    static const UnitMap _unitText;
+    static const UnitMap _unitText_make() {
+        static const UnitMap map {
+            {MAbstract::Unit_Enum::eUI, "UI"},
+            {MAbstract::Unit_Enum::eHD, "HD"},
+            {MAbstract::Unit_Enum::eDG, "DG"},
+            {MAbstract::Unit_Enum::eDV, "DV"}
+        };
+        return map;
+    }
 
 public:
+    static const QString unitText(const Unit_Enum &vEnum) {
+        return _unitText[vEnum];
+    }
+    static const QString typeText(const Type_Enum &vEnum) {
+        return _typeText[vEnum];
+    }
+
+
     // the model needs to implement these since each model have different meaning of the bytes from different source(unit).
 
     /*!