chain-declaration-usage.md

September 23, 2022 ยท View on GitHub

code pal for ABAP > Documentation > Chain Declaration Usage

Chain Declaration Usage

What is the intent of the check?

This check searches for chained up-front declarations of variables. Chaining visually implies a logical grouping that is often not actually present and variables often should rather be declared inline at their first point of usage.

How to solve the issue?

Change the chained up-front declarations to inline declarations.

What to do in case of exception?

In exceptional cases, you can suppress this finding by using the pseudo comment "#EC CHAIN_DECL_USAG which should be placed after the declaration statement:

  DATA: "#EC CHAIN_DECL_USAG
    string TYPE string,
    json TYPE REF TO cl_abap_json,
    client LIKE sy-mandt. 

  TYPES: "#EC CHAIN_DECL_USAG
    name TYPE string,
    json TYPE REF TO cl_abap_json.

or

  CONSTANTS: "#EC CHAIN_DECL_USAG
    min_age TYPE i VALUE 18,
    min_name_size TYPE i VALUE 3.

Example

Before the check:

  DATA:
    string TYPE string,
    json TYPE REF TO cl_abap_json,
    client LIKE sy-mandt.
  string = `Hello world`.
  create object json
    exporting iv_json = string.
  client = sy-mandt.

After the check:

  data(string) = `Hello world`.
  data(json) = new cl_abap_json( string ).
  data(client) = sy-mandt.

or

  DATA string TYPE string.
  DATA json TYPE REF TO cl_abap_json.
  DATA client LIKE sy-mandt.
  string = `Hello world`.
  create object json
    exporting iv_json = string.
  client = sy-mandt.

Further Readings & Knowledge