I'd like to filter out planning values that are incoherent between each other. -- View this message in context: http://drools.46999.n3.nabble.com/Creating-selection-filter-for-PlanningE... Sent from the Drools: User forum mailing list archive at Nabble.com.

We are developing an application whose PlanningEntity has multiple planning variables, in fact 4. There are some moves that we do not want to select. To ensure that the values proposed (moves) for the 4 different variables do not break a constraint (between them). We wanted to filter out inacceptable move configurations instead of using the score function to check the constraints. We studied the MoveSelector and SelectorFilter APIs and we implemented a ChangeMove SelectionFilter as an UnionMoveSelector of ChangeMoves of the four variables. The SelectionFilter is written to accept or refuse the values (of the 4 variables) proposed. However we encounter problems: - The same ChangeMove (with same values of the 4 variables) are proposed in consecutive moves and hence invocations of SelectionFilter - The SelectionFilter rejects the values since it breaks constraints Then the we get a warning : “Bailing out of neverEnding selector ({}) to avoid infinite loop”. Hence we have been unable to implement the SelectionFilter for our purposes. Could you advise us? -- View this message in context: http://drools.46999.n3.nabble.com/Creating-selection-filter-for-PlanningE... Sent from the Drools: User forum mailing list archive at Nabble.com.

Hello again, o) I completed the changes that you suggested last year concerning the issue that I am encountering with opta planner with our application. Note that I have at most one or two planning entities in the Solution (in my test case). Setting "cacheType=PHASE on UnionMoveSelector level" or "cacheType=STEP on UnionMoveSelector level" results in: java.lang.IllegalStateException: The selector (Union([ChangeMoveSelector(Filtering(FromSolutionEntitySelector(CloudPlacement)), FromSolutionPropertyValueSelector(offeredCPU)), ChangeMoveSelector(FromSolutionEntitySelector(CloudPlacement), FromSolutionPropertyValueSelector(offeredDisk)), ChangeMoveSelector(FromSolutionEntitySelector(CloudPlacement), FromSolutionPropertyValueSelector(offeredMemory)), ChangeMoveSelector(FromSolutionEntitySelector(CloudPlacement), FromSolutionPropertyValueSelector(offeredVolume))]))'s non-last childMoveSelector (ChangeMoveSelector(Filtering(FromSolutionEntitySelector(CloudPlacement)), FromSolutionPropertyValueSelector(offeredCPU))) has neverEnding (true) with randomSelection (false). Setting cacheType=PHASE for each change move selector results in: Caused by: java.lang.IllegalStateException: The selector (Caching(ChangeMoveSelector(Filtering(FromSolutionEntitySelector(CloudPlacement)), FromSolutionPropertyValueSelector(offeredCPU)))) has a childMoveSelector (ChangeMoveSelector(Filtering(FromSolutionEntitySelector(CloudPlacement)), FromSolutionPropertyValueSelector(offeredCPU))) with neverEnding (true). o) Number of moves: I obtained the number of evaluated moves from solver and I obtain a number above 7 000 000. I also added logs to the MoveFilter that I implement. Different values are being proposed. But, the MoveFilter is repeatedly invoked (20 times) with the same set of planning values. Since this set broke constraints the MoveFilter returns false each time. Then "bailing out error" occurs: o) Change Move Filter configuration My planning entity CloudPlacement has four planning variables as indicated in the included config file. I tried the modifications you suggested over this basic version. Could you please check that the configuration is correct? 2014.03.14_Config_file.xml <http://drools.46999.n3.nabble.com/file/n4028776/2014.03.14_Config_file.xm... Regards -- View this message in context: http://drools.46999.n3.nabble.com/Creating-selection-filter-for-PlanningE... Sent from the Drools: User forum mailing list archive at Nabble.com.