Data Language Interface: Difference between revisions

Revision as of 21:23, 10 February 2016

Revision as of 07:35, 19 April 2016

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For all languages except [[PL/I]], the first parameter in a call is the ''Function Code'' — a four character field, examples being: “GU  ” (Get Unique), “GN  ” (Get Next), “REPL” (Replace), and “ISRT” (Insert). With PL/I, due to the way this language does not mark the last parameter with a '1' in bit 0, the first parameter must instead be a fullword (Fixed Bin(31)) containing the number of following parameters.

A typical call from a [[COBOL]] program might be . . . '''<code>CALL “CBLTDLI” USING GU, Stores-Database-PCB, Stores-Segment-Area, Stores-Root-SSA</code>'''. The program would then automatically wait till the requested data was retrieved and placed in the Segment-Area. The status code contained within the PCB would be updated with either blanks (if all went well) or some informational or error code.

A typical call from a PL/I program might be . . . '''<code>CALL PLITDLI(FOUR, GU, Stores-Database-PCB, Stores-Segment-Area, Stores-Root-SSA);</code>'''.

==References==