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  3. February 2008

Re: Calling names - System i5

Steve Richter wrote:
the specific feature I have in mind is the object encapsulation of program variables and the use of references to access those variables.

Mark S. Waterbury wrote:
If I understand what you are saying, you can do this now and it's not that hard. Create a service program that has "private data" with several procedures (getter and setter methods) to manipulate the private data managed by the service program (which represents an "object" in OO programming). You can do this in ILE RPG IV or even COBOL as well as C or C++.

If you are interested in a concrete example, I wrote an article for MC Press Online for which I implemented a hash table as a service program. It's far from perfect, but I think it illustrates reasonably well what Mark describes above. See http://tinyurl.com/2o6hpt or http://www.mcpressonline.com/december-5-2007-vol-6-issue-22/tips-techniques/rpg/techtip-create-hash-tables-in-rpg-with-the-dictionary-adt.html

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