类alv和函数alv有什么区别

Question

我们使用的是类 alv 和函数 alv，这些选项有什么区别？

Answer 1

• Some of the differences:

  • You can create screens using function modules however classes have to call separate program to generate screens.
  • Classes are more secure than FMs.
  • Class type increases the performance.
  • Class type is OO, it allows more flexibility. Can have multiple ALVs in one screen.
  • Classes will allow reusability better than FM because being Object Oriented.
  • Classes are instantiable while function groups are not.
  • Objects are the instance of class but FMs are not instances of a Function Group.
  • Function modules can be executed asynchronously and can be called by other systems remotely also.
  • A program can work with instances of several function groups at the same time however it cannot work with several instances of a single function group.

*This referance could be helpful too.

Hope it was helpful

Talha