Within SAP NetWeaver 7.4
there were some new features introduces in case of ABAP. One of them is so called
SAP ABAP Connector (ACO). It is an ABAP component designed to consume RFC
Services on remote ABAP systems. The things that it tries to solve are related
to different dictionary types that one remote function (RFM) may have. These
can be either a case that dictionary types are not available at all, or are
available in different versions on different systems.
Basically using the ACO a consumer
proxy can be generated and used for RFC scenarios. If for any reason an
interface of RFM changes a call from ABAP with the old interface doesn’t make a
dump. But the proxy will be regenerated instead if any change in the RFM
interface happens.
The ACO leverages SAP
Connectors like SAP Java
Connector 3 (JCo) or SAP .Net Connector 3 (NCo). It uses them first to retrieve
metadata via APIs, them it performs dynamic RFC call of any RFM while it dynamically
sets/gets the parameter values.
While the ACO access the
remote RFM following two paradigms are supported:
1. Generation of a static
proxy - proxy class is generated once for specific remote system and the RFM. Client
program will regenerate the class when the RFM’s interface is changed.
2. Dynamic access to the
values and metadata of all parameters – Values of the RFM param can be read/set
by using get/set methods. The params (plus its types) are determined at runtime
by the ACO.
One drawback here is that
the ACO doesn’t support bgRFC or or t/qRFC.
More information:
