How to invoke an application when another applications is started

Question

  Hi All,
    Good day. I am a newbie to AppleScript and writing down this seeking your kind help here.
Making my question detail here,
Applcation 1 :  Consider this to be some thing kind of server stuff which is running.
Application 2:  Consider this to be an application like Automator or any other automation tool for example Sikuli or Squish
My actual scenario is that, When Application 1- is still running and upon its completion I want to instruct to another application to start.
Suppose consider that Application 1 is running and when it is finished I want to invoke another application via apple script.
So here, I want both the scripts from you people that can do this.
> Script for -
1. Invoke Application 1 (via Applescript itself) let it run for few minutes(as it is server kind of stuff, i want it to run) when this is complete then I want to invoke the application 2
2.  I am manually invoking the application 1 and I am going away,  as it will run for few minutes then on Application completes its job I want Application 2 to be Invoked.
I believe, I am pretty explanatory here, so please help with these
Regars,
OsmanBerg

Answer 1

Does Appliction 1 quit by itself when it's done? If so a simple loop should do the trick - periodically check to see if the app is still running:
-- start App1
tell application "App1" to activate
-- we know it's running
set isRunning to true
tell application "System Events"
  -- do this until the app is no longer running
          repeat until isRunning is false
  -- has the app quit?
                    if (exists application process "App1") = false then
  -- if so, set our flag accordingly
                              set isRunning to false
                    end if
  delay 2 -- wait 2 seconds before checking again
          end repeat
end tell
-- if we get here we know the first app has quit, so:
tell application "App2" to activate