Common programming interface (Scripting)
The Performance Test high-level language, common programming interface (HLL CPI) allows programs written in REXX to accomplish the following:
- Establish sessions with transaction processing facilities (such as CICS and IMS/DC) that use VTAM and 3270 communication protocol
- Simulate a terminal operator’s typed input
- Send data to a transaction processing facility in either 3270 or field level formats
- Interrogate and examine the output terminal data
- Run Performance Test scripts
- Terminate the session.
The terms input and output are used throughout this section. These terms are consistent with the CPU’s point of view. Input is data flowing from the 3270 devices to the domain destination. Output is data coming from the domain destination and going to the virtual 3270.
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