[eclipse-users] Constraint Challenge

Dear Eclipse-Users,

I need help for a planing contraint problem.

I want to model the following situation with the help of constraints:

There are two activities one will be executed after an other within a 
definite range.

EndTimeFirst #:: [2..10],
StartTimeSecond #:: [2..10],
EndTimeFirst #<= StartTimeSecond,

This allows delays between the execution of the two activities. This is 
intended.

Now, I want to state that there is no other activity executed during the 
delay. Do you have any idea, how to do that?

One of my ideas:
It is easy to get a constrained variable for the pause

Pause #>= EndTimeFirst,
Pause #<= StartTimeSecond

For each activity in my plan I would like to state, that it is not in 
the interval.

StartTimeOther ## Pause

does not help, because it excludes the start time from Pause and does 
not contrain StartTimeOther not to be in Pause.

It would help me very very much, if you have an idea !!!

--- Thank you very much ---

Doro

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Dorothea Schäfer                   dschaefer_at_...45... 

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