abap--关于集(set)的读取(如读取成本中心组下的所有成本中心)

在sap中很多地方使用了集(set)来存储层次关系的数据,如:
Cost Center Group
Cost Element Group
Order Group
Statistical Key Figure Group
Activity Type Group
Profit Center Group
Business Process Group
Cost Object Group
Account Group
WBS Element Group
Fund Group
Functional Area Group
Grant Group
Business Entities Set
Real Estate Set
Buildings Set
Rental Units Set
Rental Agreements Set
Management Contracts Set
Settlement Units Set
General Contracts Set
... 等等....，具体参见SETCLS表.

相关TCODE
GS01
GS02
GS03
GS04

相关数据表
setcls:Set Classes(SETCLASS(4))
SETCLST: Set Class Descriptions(LANGU(2),SETCLASS(4))
setheader:Set Header and Directory(SETCLASS(4),SUBCLASS(10),SETNAME(24))
setnode:Lower-level sets in sets((SETCLASS(4),SUBCLASS(10),SETNAME(24),LINEID(10))
setleaf:Values in Sets(SETCLASS(4),SUBCLASS(10),SETNAME(24),LINEID(10))

相关函数
'G_SET_GET_ALL_VALUES'
'G_SET_FETCH'

代码样例
该样例代码是提取某个成本中心组下的成本中心到range: s_kostl
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