TYPE-POOL

Short Reference

Syntax

TYPE-POOL tpool.

Effect

The TYPE-POOL statement must be the first statement of a type group following the triggering of possible include programs, and introduces this type group. You can only maintain type groups in the ABAP Dictionary tool of the ABAP Workbench, whereby an ABAP program is automatically generated including the TYPE-POOL statement.

Type groups can only contain the statements

• INCLUDE,
  
• TYPES,
  
• TYPE-POOLS,
  
• CONSTANTS,
  
• DEFINE and END-OF-DEFINITION,
  
• CLASS DEFINITION with additions DEFERRED PUBLIC or LOAD
  
• and the declared data types, constants, and macros must be prefixed with the name tpool of the type group. Type groups are used in other ABAP programs with statement TYPE-POOLS.
  

Notes

• Types in type groups are the predecessors for general type definitions in the ABAP Dictionary.
  
• As of release 6.40, you can also define data types and constants in the public visibility section of global classes, which means that type groups are fully replaceable.
  
• To avoid conflicts in the type reference with the addition LIKE, you must ensure that constants in type groups do not have the same name as existing flat structures or database tables of the ABAP Dictionary.
  
• The name of a type group may contain a maximum of five characters.
  
  
  

Example

Type groups with the definition of a table type.

TYPE-POOL mytgr.
TYPES mytgr_spfli_tab TYPE HASHED TABLE
                      OF spfli
                      WITH UNIQUE KEY carrid connid.