Parameters in ABAP

 

  • Parameters keyword allows the user to provide values for variables through the input screen.
  • The input screen can be generated by the keywords Parameters or Select-options.
  • Technically input screen is known as Selection Screen. It's screen number is standard and is 1000.
Ex. PARAMETERS A TYPE I.

PARAMETERS file_name(40) TYPE C DEFAULT 'c:sample.txt'.
  • The data types F(Float), STRING and XSTRING are not allowed with parameters.

Parameters keyword can be used to generate Check boxes and Radio buttons on the selection screen.

  • A check box or a radio button is always identified programmatically as single character variables.
  • if a check box or radio button is selected by the user then the corresponding variable contains value 'X' otherwise a SPACE.
  • SPACE is keyword in ABAP that represents a single space character.

Logically related radio buttons must be grouped together.

Example:

PARAMETERS CH TYPE C AS CHECKBOX.

PARAMETERS RB1 TYPE C RADIOBUTTON GROUP G1.

PARAMETERS RB2 TYPE C RADIOBUTTON GROUP G1.

PARAMETERS RB3 TYPE C RADIOBUTTON GROUP G1.
  • The length of a parameter or select-option must not exceed 8 characters.
  • On the selection screen, user defined text can be displayed in place of parameters and select-options names. These texts are known as Selection texts.
  • To provide selection texts for selection screen elements use the menu path

Goto -> Text Elements -> Selection Texts

Comments

Post a Comment

Popular posts from this blog

Domains and Data Elements

  Domains A domain provided Technical attributes (type, length and possible values) for a field. The definition of domain in ABAP is same as that in Mathematics. In the world of Mathematics, a domain is defined as the set of input values that are valid for a given function. The same holds true for domains in ABAP. To understand this, let us first see what is the role of domains in ABAP data dictionary. Domains -> Data Elements -> (Structures, DB tables, program references etc.)
Read more

Sample ABAP program for Updating notepad file data to Internal table and Sending it to Application server

 *--Structure type TYPES: BEGIN OF TY_STD, RONO TYPE C LENGTH 4, NAME1 TYPE C LENGTH 20, GEN TYPE C LENGTH 6, FEES TYPE C LENGTH 10. END OF TY_STD. *--Header line and internal table DATA WKA TYPE TY_STD. DATA INT_TAB TYPE TABLE OF TY_STD. *--Application server files are known as "Datasets" *--here "fname" is the Dataset DATA FNAME TYPE C LENGTH 40 VALUE "StudentsInfo.txt". *--Convert notepad file data into internal table CALL FUNCTION 'GUI_UPLOAD' EXPORTING FILENAME = 'C:Documents and SettingsAdministratorDesktopstudents.txt' HAS FIELD_SEPARATOR = 'X' TABLES DATA_TAB = INT_TAB. *--Sending data to Application Server OPEN DATASET FNAME FOR OUTPUT IN TEXT MODE ENCODING DEFAULT. LOOP AT INT_TAB INTO WKA. TRANSFER WKA TO FNAME. ENDLOOP. CLOSE DATASET FNAME.
Read more

OPEN SQL EXAMPLES IN ABAP – PART 2

 ******************************************* **displaying Raw Materials and Finished products **only from MARA table. DATA WA TYPE MARA. * **--WHERE clause is for filtering the records SELECT * FROM MARA INTO WA WHERE MTART = 'ROH' OR MTART = 'FERT'. WRITE: / WA-MATNR, WA-MBRSH, WA-MTART, WA-MEINS. ENDSELECT. * **************************************************
Read more