ARTICLE
VALUE - Value Operator
Syntax
... VALUE type( ... ) ...
Effect
A constructor expression with the
value operator VALUE creates a result of a data type specified
using type . The following can be specified for type :
A non-generic data type dtype .
An exception to this rule is VALUE #(
table_exp ) .
The operator
creates initial values for any non-generic data types
constructs the content of
structured types
table types
control the category of table
expression result
The content of the result is determined by the parameters specified in
parentheses. The syntax used in pass by parameter depends on the type
used when the value was constructed. There are specialized categories of
pass by parameter for each possible type.
Initial value for all types
Structures
Internal tables
If a single table expression is specified
as a parameter, VALUE does not construct a value and controls the
category of its result instead, as described in the related
section .
Notes
Elementary data types and reference types cannot be specified explicitly
for VALUE using pass by value. Unlike when using the instance
operator NEW , the correct
result can be achieved by using direct assignments. For this reason, it
is not necessary to specify unnamed arguments as single values when
using NEW (and also not allowed). The use of VALUE to
control table expressions is not
affected by this, since any valid data type can be specified here.
Arithmetic calculations with the results of VALUE using pass by
value are not possible. This means that constructor expressions of this
type cannot be specified directly in the operand positions of
arithmetic expressions .
Constructor expressions using VALUE used to control
table expressions are not affected
by this, if the table expressions can be used for calculations using
valid results.
From a technical perspective, the value operator VALUE creates a
temporary data object whose data type is determined by the specified
type and whose content is determined by the passed parameters. This data
object is used as the operand of a statement and then deleted. It is
deleted when the current statements is closed or after the analysis of a
relational expression once the logical value has been determined.
Example
Constructs the values of a structure of type T100
declared inline .
DATA(wa) = VALUE t100( sprsl = 'E'
arbgb = 'DEMO'
msgnr = '111'
text = '...' ).
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved
