Reading an Object Reference from a
Container
Prerequisites
The following prerequisites must be fulfilled to read an object reference of a BOR object from a container:
· For function modules, the include file <CNTN01> must be incorporated in the program. For ABAP classes, the include files <CNTN02> and <CNTN03> must be incorporated. For more information, see Macro Instructions for Processing a Container.
These prerequisites are always fulfilled if you are in the implementation program. The container is then addressed with the name CONTAINER.
· The object references of the container must not be persistent.
Containers passed using a function module interface always contain persistent object references. Before you read object references from a container and store them in a variable, you must make all object references in the container into runtime references. To do this, execute the following macro instruction:
SWC_CONTAINER_TO_RUNTIME <Container>.
You must process a container with this macro if you:
- Read a rule container for rule resolution
- Read an event container within a check function module or a receiver type function module
Procedure
...
1. Create a variable for the object reference. Use the following command to do this:
DATA <Object> TYPE SWC_OBJECT.
2. Read the object reference from the container. Use the following command to do this:
SWC_GET_ELEMENT <Container> <ContainerElement> <Object>.
You can read the object type and the key from the object reference. To do this, use the macros SWC_GET_OBJECT_TYPEand SWC_GET_OBJECT_KEY. For more information, see Macro Instructions for Accessing Objects, Attributes and Methods
If you only want to read one object reference, you should also only convert this object reference into a runtime reference for performance reasons. To do this, proceed as follows:
DATA
<Object> TYPE
SWC_OBJECT
<Variable> LIKE SWOTOBJID.
SWC_GET_ELEMENT <Container> <ContainerElement>
<Variable>.
SWC_OBJECT_FROM_PERSISTENT <Variable> <Object>.