CA IDMS DLI Transparency Software Components › Runtime Interface › CA IDMS DLI Transparency Front End › IDMSDLFE module

IDMSDLFE module

The IDMSDLFE module establishes, controls, and terminates communication with the back end (the RHDCDLBE module). When IDMSDLFE receives an initialization call from the IDMSDLRC module in a batch environment or from IDMSDLFC under CICS (see below), it performs the following functions:

• Acquires work area
• Issues a BIND RUN-UNIT to the back end (RHDCDLBE)
• Issues a call to RHDCDLBE for PCB information

Once the initialization functions are complete, IDMSDLFE accepts DL/I calls from the language interface and performs the following functions:

• Sends the DL/I calls to the back end.
• Accepts the retrieved data and status information from the back end.
• Receives from the back end the updated PCB control blocks, which are used to return retrieved data and status information to the DL/I application. When the DL/I application finishes executing, the front end receives a termination call from the region controller and performs the following:
  • Issues a FINISH to the back end
  • Frees storage