[rules-users] Re: IllegalAccessError in shadow classes

[Peter Van Weert]

Mark Proctor wrote:
> In Drools 3.0 we did not need to shadow as we hade a more complicated 
> algorithm that maintained more references allowing for asymetrical 
> behaviour - however I couldn't get the algorithm to perform with Jess 
> like performance and it used a lot more memory. I dropped Drools 4.0 
> back to how Jess does it with shadow facts and symmetrical 
> assert/retract. For Drools 5.0 I have re-written the algorithm and have 
> managed to get asymettrical behaviour with actual performance increases, 
> not losses. This is now in a branch and I hope to merge into trunk soon.
> 

Could you elaborate a bit on this algorithm (and/or that of Drools 3.0)? 
Or is there some reference where I can find information about the 
general ideas behind it (other than digging into the source code)?

Thanks,
Peter

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