ARTICLE
IMPORT - Text language rule
The rule described in this section is only relevant if structures
defined in the ABAP Dictionary are imported from the database in a
Unicode system , that have exported
from an MDMP system , and vice
versa.
Character-type data can be stored in an MDMP system encoded according to
different code pages . The character set ID
stored in EXPORT is therefore not
sufficient. For this reason, the statement
IMPORT FROM DATABASE is used for evaluating the
text language of database tables or
structures defined in the ABAP Dictionary.
The following hierarchy applies for assigning the text language to a
structure:
A component that is labeled as a text language in a substructure or
table-type component with a structured line type is only valid for this
substructure or internal table.
A component labeled as a text language in a superordinate structure
applies for this structure and for all other structures or table-type
components nested in it, which do not have any components of their own
that can be identified as a text language.
If a component labeled as a text language is among the freely selected
components of the INDX -type database
table in which the data is stored, this determines the text language for
all elementary fields, structures, and internal tables in the
corresponding data cluster that do not have their own language.
When importing from structures stored in the database, the text language
determines the code page used to handle the character-type components of
a structure as follows:
Importing MDMP data into a Unicode system
The code page of the imported data is determined using the text language
from the database tables TCPOC (table of
text environments ) and TCP0D
(localization of the database). If no text language component is
available, the character set ID stored during export is used.
This rule is based on the assumption that the Unicode system has
resulted from the conversion of an MDMP system. If it has not,
this may lead to conversion errors.
Importing Unicode data into an MDMP system
The imported data is handled according to the assignment of languages to
code pages defined in the MDMP system, depending on the text
language. If no text language component is available, the language of
the current text environment is used.
Note
Structures and internal tables with a structured line type that is based
on types defined in the ABAP program do not have a text language. The
character set ID stored during export is always used for these.
Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved