How many of us have had this happen during debugging? You need to analyze a bug, or you want to find out how an application works. And you don’t know where exactly to set a breakpoint. So you start the ABAP Debugger and start stepping through the code. And you keep on stepping through the code, endlessly, without reaching any of the application logic in which you are interested! Well there is a solution and its Software Layer-Aware Debugging (SLAD), sometimes referred to as Profile Controlled Debugging.
Typically, you use the delivered WHERE-USED functionality of the Repository Information System (SE84) inside an SAP instance to discover where the subject object is called or referenced. But what if the objects calling reference is not in the system that has the RFC? You could log on to every SAP system and do a Where-Used, or we can learn from Henry and use his tool. Part 2 of this series does a deep dive into the ALV design and programming, and delivers the user the entire code base.
Typically, you use the delivered WHERE-USED functionality of the Repository Information System (SE84) inside an SAP instance to discover where the subject object is called or referenced. But what if the objects calling reference is not in the system that has the RFC? You could log on to every SAP system and do a Where-Used, or we can learn from Henry and use his tool. Part 1 of this series lays the foundation for understanding the problem and how to address it.
Program code generation is considered to be the highest level of dynamic programming because the source code is created at runtime and all ABAP features can be used independently of input parameters. But, please be aware that this is an expensive and difficult option. The code to generate programs dynamically is very complex and hard to maintain. If you adopt this approach, you still have choices to make. ABAP supports two types of runtime program generation — transient and persistent.
Runtime Type Identification (RTTI) is a powerful technique for obtaining all information about a data type at runtime. When you use dynamic programming techniques, sometimes you need to dynamically determine the data type or properties in order to decide how to handle the data.