Re: Upgrade v4 to v5 or more

gordonh@acslink.net.au (Gordon Hooker) wrote: >junet@informix.com (June Tong) wrote: >>: > Is there anyone who can help me with upgrade from version 4 to 5 >>: > or higher, what are the differences regarding 4GL? >>: > [...cool .sig deleted...] >>: The biggest one that got us was argument checking. In version <=4 >>: you could pass as many arguments as you wanted, and it would let you, >>: regardless of how many the other program expected. In version >= 5 >>: you MUST pass in the correct number, or you will get a runtime error. >>Well, no. There isn't a version 5 4GL at all. I believe you're thinking of >>4GL version 4.10. >>Version 4.10 4GL added a lot of error checking that wasn't done in 4.00. This >>caused a lot of errors (such as number of arguments) to get returned that >>hadn't been returned under 4.00. In the later versions of 4.1x (I'm not sure >>when, 4.10.UE1 or 4.11 on), much of this error checking was moved to the >>WHENEVER ANY ERROR option so that you could turn it on (using the ANY ERROR or >>-anyerr compile flag) or leave it off for 4.0 compatibility. Version 6 4GL is >>based on some later version of 4.1x (4.12 or something) and should have >>incorporated this change as well. >>For the original poster, if you are upgrading your backend to version 5, you >>can leave your 4GL at the same version as it is currently, or upgrade to 4.1x >>if you were on 4.0. If you leave your 4GL at the same version, you shouldn't >>really see any differences at all -- all your old code should work fine. >Thats funny... >When version 5.x came out we were informed that you need to upgrade to >4.1 tools. I have had quite a few sleeps since then so I can't As part of the 4.x to 5.0 migration course. The question about versions was discussed in depth for some time. The Informix training guy said "You need 4.1 tools to talk to 5.0 engines..... >remember the exact reason behind it. Recently I saw an instance where >a company upgraded to online 5.x and had 4gl code compiled under a 4.0 >tool and the application failed totally. >My suggestion would be... If you go to 5.x upgrade the 4GL to 4.1x >Gordon Hooker >>The remaining differences between 4.0 and 4.1x 4GL *should be* just new >>features (but no guarantees, of course). >>June >>#include <std.disclaimer> >>---- June Tong Informix Asia/Pacific ---- >>---- On-Loan Engineer Singapore ---- >>---- junet@informix.com (65) 298-1716 ---- >gordonh@acslink.net.au >RIPLEY, Queensland, Australia gordonh@acslink.net.au RIPLEY, Queensland, Australia