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ABENDDIC_DOMAINS_SEMA - DDIC DOMAINS SEMA

ABENDDIC_DOMAINS_SEMA - DDIC DOMAINS SEMA

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- Semantic Attributes of Domains

Domains can be given the following semantic attributes:

  • Short text
Each domain is assigned a descriptive short text that must be specified when it is created.
  • Documentation
A domain can be assigned documentation that can be read as required.
  • Output attributes
The output attributes affect how fields defined with reference to a data element that references the domain are displayed on dynpros or Web Dynpros or when formatted with the statements WRITE or WRITE TO.
  • Output length

The optional output length overrides the implicit output length as assigned to the built-in elementary data types. The possible output length is determined by the data type and is checked by the ABAP Dictionary tools. If a format is assigned to the built-in data type used, the output length should be long enough for all formatting characters.
  • Output style

A domain with the type of a decimal floating point number must be assigned an output style.
  • Conversion routine

If a domain is assigned to a conversion routine, the associated function module ..._INPUT for each input in a dynpro field and ..._OUTPUT is called for each output using a dynpro field that is defined with reference to a data element that itself references the domain. The function module ..._OUTPUT is executed in the same way when a data object is formatted using WRITE or WRITE TO when the data object is declared with reference to a data element of this type.
  • Sign

If a data type of a dynpro field defined in the ABAP Dictionary is numeric, the "Sign" attribute must be set so that negative numbers can be displayed on the screen. This attribute can only be specified using a domain.
  • Lowercase letters

If a data type of a dynpro field defined in the ABAP Dictionary is character-like, the "Lowercase Letters" attribute can be set so that these letters are not transformed to uppercase. This attribute can only be specified using a domain.
  • Time format

For the data type TIMS, a 24-hour or 12-hour format can be set for displaying dynpro fields in accordance with the ABAP time formats.
  • Value range
Value ranges for fields on user interfaces can be defined for domains of the built-in types CHAR, NUMC, DEC, INT1, INT2, INT4, and INT8. For domains of the types CHAR and NUMC, this range specifies the valid input values in dynpro fields defined with reference to a data element of such a domain. The value range is evaluated for all types for the input help of dynpro fields if no input help with a higher priority exists. The value range is ignored for the content of data objects in ABAP programs or of DDIC database table fields that reference a data element with a domain of this type. A value range can be defined using the following:
  • Fixed values

  • Intervals

Fixed values and intervals can be combined in any way. The following can be specified as fixed values and interval limits:
  • Alphanumeric characters including blanks and special characters for the type CHAR. The length is restricted to 10.

  • Positive integers (including 0) for the types NUMC, INT1, INT2, INT4, INT8, and DEC within the value range defined by the technical attributes.

A short text can be specified for each fixed value or interval, which is then displayed when used in an input help. The fixed values of a domain can be specified as special literals in a . The fixed values provided by SAP can be enhanced by customers or partners using fixed value appends.
  • Value table
A value table can be a DDIC database table that is used as a default for the check table in cases where a table field of a DDIC database table that references a data element with this domain is included in a foreign key. Specifying a value table alone does not trigger a check.

Example

The domain S_CLASS with the type CHAR describes the possible classes in a flight booking. The value range of the domain is defined by the fixed values "C" (Business Class), "F" (First Class), and "Y" (Economy Class). This means that only the values "C", "F", and "Y" can be entered for all dynpro fields that refer to this domain.






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