Preface – This post is part of the Object Oriented ABAP series.
Table of Contents
User-defined types in SAP Classes are used to define structures and table types in the class. Structure is a data type that defines structures data objects and table type represents the structure and functions of an internal table.
A TYPE in classes has following fields that are required to be filled:
- TYPE: Unique name for type.
- VISIBILITY: This field defines the visibility of type. It has four options: Public, Protected, And Private and Package.
- TYPING: This field specifies the Reference Type. It has three options: Type, Type Ref To and Like.
- Associated Type: Any elementary ABAP type or object type can be defined (generic types, classes or interface).
- DIRECT TYPE ENTRY: The arrow marked button after Associated Type is called Direct Type Entry. It is used to provide further details of the data type.
- DESCRIPTION: Short description of the field.
TYPES: Begin of <structure-name>,
END of <structure-name>.
TYPES : <tt-name> TYPE TABLE OF <structure-name>.
How to create User-defined types in SAP Classes?
Follow the below steps to declare types in global class:
- Provide the object name in SE24.
- In Class/Interface screen, provide the method name in Method tab.
- Go to Types tab to provide user-defined type.
- Click on Direct Type entry icon to open the editor.
- Replace the types statement with the user-defined type.
Example: TYPES : Begin of s_material, “structure
matnr TYPE MARC-MATNR,
werks TYPE MARC-WERKS,
END OF s_material.
TYPES : Begin of ty_mara,
matnr TYPE MARA-MATNR,
mtart TYPE MARA-MTART,
meins TYPE MARA-MEINS,
matkl TYPE MARA-MATKL,
END OF ty_mara.
TYPES: tt_mara TYPE TABLE OF ty_mara. “table type
- Save it.
- In the method parameter, add the parameter with associated type name as user-defined type name. And add the required code in method. Save and Activate it.