RMultiTypeFix
It is used when reading a file that has a Header/Body/Footer structure with a fixed length.
Figure 1. RMultiTypeFix
Since MultiType Read is delivered through multiple types of IO, it must be defined as IOmmObject, which is the Supertype of IO. In addition, in order to determine what kind of IO the delivered IO is, it must be processed using instanceOf.
Figure 2. RMultiTypeFix - ItemProcessor processing example