Unicenter CA-Scheduler Job Management for VSE Systems ...

3.4 Database Read-Access Module3.4 Database Read-Access ModuleThe Unicenter CA-Scheduler program, CAJCACC0, is provided to allow theuser a read access to most of the information stored on the job masterdatabase. This information may be processed by the user in any form or forany purpose.This program can be called from a user-written program to retrieve scheduleor job records sequentially, by unique or generic key. The caller must providea parameter list that contains (among other things) a:■ Function code (get sequential, get generic, or get unique)■ Record ID (schedule or job)■ Pointer to the buffer where the record is to be retrieved and the length ofthe buffer.■ Return code field for CAJCACC0 to pass back information about thefunction requested.The program must be loaded prior to use.Six macros are provided in assembler source form (CAIJAPRM, CAIJSCH,CAIJJOB, MAPJCR, MAPOCR, and MAPJURT). Users must use these in thierprogram to define:■■■The parameter list that is passed to the programThe schedule record layout that will be retrieved by the program ifPRMID=SCH.The job record layout that will be retrieved by the program if PRMID=JOB.Notice that if you request criteria information (SCR or JCR) in the PRMID,CAJCACC0 changes SCR and JCR to OCR in the returned data.The program uses standard IBM linkage conventions and expects theseregisters on entry:RegisterFunction1 Points to the parameter list described on the next page.13 Points to a register save area for the program to save thecaller's registers.14 Return point to the caller's program15 Entry point to the programChapter 3. User Exits and Interfaces 3-9