DATA - Inline Declaration
7.31 | 7.40 | 7.54
... DATA(var) ...
A declaration expression with the declaration operator
DATA declares a
var used as an operand in the current
writer position. The declared variable is visible statically in the program from
DATA(var) and is valid in the current
context. The declaration is made when the program is compiled, regardless of whether the statement is actually executed.
The declaration operator
DATA can be specified in every compatible
declaration position. The date type of the variable is determined by the
operand type. It must be possible to derive this type statically in full.
var declared inline cannot be used in a reader position of the same statement.
- A valid statement with an inline declaration of a variable can generally be interpreted as a short form for a declaration statement used as a direct prefix.
DATA var TYPE ...
... var ...
- Just like the statement
DATA, an inline declaration does not open a local context for the current statement block. An inline declaration for a variable can only be made once within a context and the variable cannot yet be declared there using
- The operand position and the types of other operands can be included in the static derivation of the operand type. If the type of a different operand cannot be identified statically (perhaps because it is specified as a generically typed field symbol), either a suitable standard type is used or no inline declaration is possible.
- If the operand type is defined by reference to a data type in ABAP Dictionary, it is used together with its semantic properties, such as field help, input help, or conversion routines.
- If more than one equally valid operand type is possible in the same declaration position, the recommended preferred data type is generally used.
Inline declaration of an internal table as a target field of an assignment and inline declaration of an appropriate work area in a
TYPES t_itab TYPE TABLE OF i WITH NON-UNIQUE KEY table_line. DATA(itab) = VALUE t_itab( ( 1 ) ( 2 ) ( 3 ) ). LOOP AT itab INTO DATA(wa). ... ENDLOOP.