Re: Upgrade v4 to v5 or more

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 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