Getting all class attributes. How?

Question

I want to read all the attributes from a class in ABAP, maybe via reflection? After that I want to filter out all constants from a specified type. How can i do this?

I know that i can read the all items of a structure via assign component of structure, also I can read them via a function module which reads the field catalog from a structure.

How to do this with the attributes of an class?

Answer 1

Use the RTTS for this. You'll get an instance of CL_ABAP_OBJECTDESCR (either a CLASSDESCR or an INTFDESCR, depending on what kind of reference you throw in) that has some public attributes that contain the attributes of the class in question.