本文详细介绍了 ABAP 中的数据引用 (LR) 和对象引用 (LO) 的概念及其使用方式。通过示例展示了如何创建数据引用并将其赋值给字段符号进行操作。适合初学者了解 ABAP 语言中引用的基础知识。
LR defines a reference which points to the data while LO defines one
pointing to an object.
An object reference is either a class or an interface reference, which are fundamental concepts in OO languages.
A data reference only points to data, typed data references are only
supported in releases later than ABAP 4.6.
Please refer to the below demo to have a look at the data reference.
DATA lr_data_ref TYPE REF TO data.
FIELD-SYMBOLS <fs> TYPE i.
CREATE DATA lr_data_ref TYPE i.
ASSIGN lr_data_ref->* TO <fs>.
<fs> = 13.
WRITE / <fs>.
CLEAR data_ref.
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