Re: check for record changed between read/chain(n) and update

You'll have trouble I believe if you don't have another data structure. (least ways, I always have. :) )

d savmstr e ds extname(hclmmas) prefix(o)
d newmstr e ds extname(hclmmas) prefix(n)
d mstrDS e ds extname(hclmmas)
then I brought in the data:

chain(n) (cmyrin: cmycin) clmmas; // get data for pg
savmstr = mstrDS; .... go to lunch, whatever
.... do stuff to change proposed record values
newmstr = mstrDS / save new values
chain cmyrin: cmycin) clmmas; // get data for pgm
if savmstr <> mstrds // then changed at another workstation
.... tell user changes made, etc.
else
eval mstrDS = newmstrds
update CMYRIN
endif

Gene Burns wrote:

Thanks, Booth!

I setup 2 data structures to start with:

d savmstr e ds extname(hclmmas) prefix(o)

d mstrDS ds likerec(clmmas)

then I brought in the data:

chain (cmyrin: cmycin) clmmas; // get data for pgm
// ekb13 begin block
chain(n) (cmyrin: cmycin) clmmas mstrDS; // load DS
unlock hclmmas; // release lock
savmstr = mstrDS;
// ekb13 end block

So now I have the data saved in a data structure, still have the fields
available (no rewrite), and no lock on the file.

Thanks everyone!