Custom conversion methods between String and Quantities were missing

de.hftstuttgart.cityunits.model/model/Quantities.genmodel

@@ -7,9 +7,9 @@
   <foreignModel>Quantities.ecore</foreignModel>
   <genPackages prefix="Quantities" basePackage="de.hftstuttgart.cityunits.model" disposableProviderFactory="true"
       ecorePackage="Quantities.ecore#/">
-    <genDataTypes ecoreDataType="Quantities.ecore#//QuantityDouble" create="return de.hftstuttgart.units.NullableQuantity.create(it);"
+    <genDataTypes ecoreDataType="Quantities.ecore#//QuantityDouble" create="return de.hftstuttgart.cityunits.model.NullableQuantity.create(it);"
         convert="return it == null ? null : it.toString();"/>
-    <genDataTypes ecoreDataType="Quantities.ecore#//QuantityLong" create="return de.hftstuttgart.units.NullableQuantity.create(it);"
+    <genDataTypes ecoreDataType="Quantities.ecore#//QuantityLong" create="return de.hftstuttgart.cityunits.model.NullableQuantity.create(it);"
         convert="return it == null ? null : it.toString();"/>
   </genPackages>
 </genmodel:GenModel>

de.hftstuttgart.cityunits.model/src/de/hftstuttgart/cityunits/model/quantities/impl/QuantitiesFactoryImpl.java

@@ -97,13 +97,31 @@ public class QuantitiesFactoryImpl extends EFactoryImpl implements QuantitiesFac
 		}
 	}
 
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public NullableQuantity createQuantityDouble(final String it) {
+		return de.hftstuttgart.cityunits.model.NullableQuantity.create(it);
+	}
+
 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 * @generated
 	 */
 	public NullableQuantity createQuantityDoubleFromString(EDataType eDataType, String initialValue) {
-		return (NullableQuantity)super.createFromString(eDataType, initialValue);
+		return createQuantityDouble(initialValue);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public String convertQuantityDouble(final NullableQuantity it) {
+		return it == null ? null : it.toString();
 	}
 
 	/**
@@ -112,7 +130,16 @@ public class QuantitiesFactoryImpl extends EFactoryImpl implements QuantitiesFac
 	 * @generated
 	 */
 	public String convertQuantityDoubleToString(EDataType eDataType, Object instanceValue) {
-		return super.convertToString(eDataType, instanceValue);
+		return convertQuantityDouble((NullableQuantity)instanceValue);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public NullableQuantity createQuantityLong(final String it) {
+		return de.hftstuttgart.cityunits.model.NullableQuantity.create(it);
 	}
 
 	/**
@@ -121,7 +148,16 @@ public class QuantitiesFactoryImpl extends EFactoryImpl implements QuantitiesFac
 	 * @generated
 	 */
 	public NullableQuantity createQuantityLongFromString(EDataType eDataType, String initialValue) {
-		return (NullableQuantity)super.createFromString(eDataType, initialValue);
+		return createQuantityLong(initialValue);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 * @generated
+	 */
+	public String convertQuantityLong(final NullableQuantity it) {
+		return it == null ? null : it.toString();
 	}
 
 	/**
@@ -130,7 +166,7 @@ public class QuantitiesFactoryImpl extends EFactoryImpl implements QuantitiesFac
 	 * @generated
 	 */
 	public String convertQuantityLongToString(EDataType eDataType, Object instanceValue) {
-		return super.convertToString(eDataType, instanceValue);
+		return convertQuantityLong((NullableQuantity)instanceValue);
 	}
 
 	/**