SAP CLDB_HAS_CLASS Function Module for
CLDB_HAS_CLASS is a standard cldb has class SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used to perform a specific ABAP function and below is the pattern details, showing its interface including any import and export parameters, exceptions etc. there is also a full "cut and paste" ABAP pattern code example, along with implementation ABAP coding, documentation and contribution comments specific to this or related objects.
See here to view full function module documentation and code listing for cldb has class FM, simply by entering the name CLDB_HAS_CLASS into the relevant SAP transaction such as SE37 or SE38.
Function Group: CLDB
Program Name: SAPLCLDB
Main Program:
Appliation area: M
Release date: N/A
Mode(Normal, Remote etc): Normal Function Module
Update:

Function CLDB_HAS_CLASS pattern details
In-order to call this FM within your sap programs, simply using the below ABAP pattern details to trigger the function call...or see the full ABAP code listing at the end of this article. You can simply cut and paste this code into your ABAP progrom as it is, including variable declarations.CALL FUNCTION 'CLDB_HAS_CLASS'".
EXPORTING
* IMP_DDB_INDEX = "
IMPORTING
EXP_CLASSTYPE = "Class Type
EXP_CLASS = "
EXP_CLINT = "
EXP_DATE = "
EXCEPTIONS
NO_STRUCTURE_LOADED = 1
IMPORTING Parameters details for CLDB_HAS_CLASS
IMP_DDB_INDEX -
Data type: IOptional: Yes
Call by Reference: No ( called with pass by value option)
EXPORTING Parameters details for CLDB_HAS_CLASS
EXP_CLASSTYPE - Class Type
Data type: KLAH-KLARTOptional: No
Call by Reference: No ( called with pass by value option)
EXP_CLASS -
Data type: KLAH-CLASSOptional: No
Call by Reference: No ( called with pass by value option)
EXP_CLINT -
Data type: KLAH-CLINTOptional: No
Call by Reference: No ( called with pass by value option)
EXP_DATE -
Data type: SY-DATUMOptional: No
Call by Reference: No ( called with pass by value option)
EXCEPTIONS details
NO_STRUCTURE_LOADED -
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
Copy and paste ABAP code example for CLDB_HAS_CLASS Function Module
The ABAP code below is a full code listing to execute function module POPUP_TO_CONFIRM including all data declarations. The code uses the original data declarations rather than the latest in-line data DECLARATION SYNTAX but I have included an ABAP code snippet at the end to show how declarations would look using the newer method of declaring data variables on the fly. This will allow you to compare and fully understand the new inline method. Please note some of the newer syntax such as the @DATA is not available until a later 4.70 service pack (SP8), which i why i have stuck to the origianl for this example.| DATA: | ||||
| lv_exp_classtype | TYPE KLAH-KLART, " | |||
| lv_imp_ddb_index | TYPE I, " | |||
| lv_no_structure_loaded | TYPE I, " | |||
| lv_exp_class | TYPE KLAH-CLASS, " | |||
| lv_exp_clint | TYPE KLAH-CLINT, " | |||
| lv_exp_date | TYPE SY-DATUM. " |
|   CALL FUNCTION 'CLDB_HAS_CLASS' " |
| EXPORTING | ||
| IMP_DDB_INDEX | = lv_imp_ddb_index | |
| IMPORTING | ||
| EXP_CLASSTYPE | = lv_exp_classtype | |
| EXP_CLASS | = lv_exp_class | |
| EXP_CLINT | = lv_exp_clint | |
| EXP_DATE | = lv_exp_date | |
| EXCEPTIONS | ||
| NO_STRUCTURE_LOADED = 1 | ||
| . " CLDB_HAS_CLASS | ||
ABAP code using 7.40 inline data declarations to call FM CLDB_HAS_CLASS
The below ABAP code uses the newer in-line data declarations. This allows you to see the coding differences/benefits of the later inline syntax. Please note some of the newer syntax below, such as the @DATA is not available until 4.70 EHP 8.| "SELECT single KLART FROM KLAH INTO @DATA(ld_exp_classtype). | ||||
| "SELECT single CLASS FROM KLAH INTO @DATA(ld_exp_class). | ||||
| "SELECT single CLINT FROM KLAH INTO @DATA(ld_exp_clint). | ||||
| "SELECT single DATUM FROM SY INTO @DATA(ld_exp_date). | ||||
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