[rules-users] Drools Planner - How often are the Move Factory classes called?

[Samuel Deballon]

Hi,

If your class extends CachedMoveFactory, the drools planner will call your
move factory only once at start.

But if it extends AbstractMoveFactory, the drools planner will be call at
each step

Samuel

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  |"awuttke [via Drools - Java Rules Engine]" <ml-node+723534-485842754-91648 at n3.nabble.com>                                                         |
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  |Samuel Deballon/FRA/CSC at CSC                                                                                                                       |
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  |16/04/2010 11:22                                                                                                                                  |
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  |Drools Planner - How often are the Move Factory classes called?                                                                                   |
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I've been working with the Drools Planner for some time now and found that
the Move Factory Classes seem to be called only once just before the first
solver iteration. Each iteration seems to get it's moves from this initial
'move pool' generated by the move factories.

However, in the documentation it is mentioned that the move factory would
be called for each iteration and would therefore allow me to modify the
move generation algorithm for each iteration.

So what is true for the current version of the planner 5.1.0? Can I
configure different ways of using the move factories during the solution
process?

I'm using a standard tabu search configuration, based on the lesson
schedule example.

Thank you,
Andreas Wuttke

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