Great, thanks Bob.
Its definitely getting lots more complicated the deeper I delve, but the
code is well written so its not too difficult to understand (this is my
first significant foray into c++ for many years, I've been reserved to the
Java/C# camps since last decade).
Im currently taking my code and attempting to reformat it (and rename files)
and split everything up much like the SQL CA, in the hope that will teach me
whats going on.
If I get it all working, and it looks very much like it was written by one
of you guys (Im kinda using scasql*.* as 'templates'), would it be easy
enough to integrate into your source tree so that I can have it available in
MS built releases of Wix in the future? That would be ideal for me...
Cheers Bob
- Adam Langley
From: Bob Arnson [mailto:[EMAIL PROTECTED]
Sent: Thursday, 28 June 2007 5:22 p.m.
To: Adam Langley
Cc: [email protected]
Subject: Re: [WiX-devs] scheduling deferred custom actions for SSRS
publication
Adam Langley wrote:
Because my custom action is actually modifying the target system (installing
reports), I need to make it a 'deferred' custom action.
Right.
That means that it won't necessarily execute within the confines of the MSI,
hence the custom action may not be able to get a reference to the database
to read the information it needs.
To really explain it I need a whiteboard.<g> Basically, the execute sequence
is broken up into phases. The first is script-generation, when immediate
custom actions run and determine the actions -- and their data. Then the
script is run; that's when you have very limited access to the database and
the installer session it's running in. It's also when CAs get elevated, so
they can modify per-machine data.
There's also rollback, when MSI unwinds the script and deletes files, puts
back overwritten ones, etc. That's why deferred CAs need "matching" rollback
CAs, to undo what they did.
And there's commit, but let's not go there.<g>
Am I on the right track?
Exactly!
--
sig://boB
http://joyofsetup.com/
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