Fwd: Packaging VistA - environments
On 11 July 2012 17:09, Bhaskar, K.S <ks.bhaskar@fisglobal.com> wrote:
>> Can you expand on "chain" and "trees" a little bit ?
> [KSB] Sure.
> in environment B have a gtmroutines environment variable that gives them a
> routine search path of (B,A). So, any customization routines for scheduling
> and lab go into B, and processes in B will find these routines earlier in
> the search path than routines with the same names in A, but for routines
> that are not in B will find the routines as distributed in A.
Inheritance and sub-classing.
One of the failures of commercial proprietary systems I've seen is
they carefully avoid that, instead forking and then getting lost.
So good for vista/GT.M
--
Adrian Midgley http://www.defoam.net/
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