Re: [rules-users] Statefull working memory corruption in Drools 5.3.Final - Was [Planner] "presumedScore is corrupted"

Yes I am getting the same results with your recommended rule. Also I wrote a Drools program that does not use Planner but instead performs the initial insert of the ShiftAdjustment, then the 3 updates with the firing of the rules at each insert/update, all in sequence, with the display of the score after each firing (so no use of the Solution class). And I get exactly the same erroneous results.

I agree with you, it could be in the hashCode and/or equals methods. I will check them again against the examples. I have done it so many times already. :) > It's odd indeed that the tmp working memory is incorrect, instead of the real one. The real working memory is created everytime from scratch to check against the presumed score, right?

Somehow the update of a fact (planning entity in this case) does not yield the same result as a retract and then insert (or plain insert in the case of the real working memory).

We looked at the planning entity code earlier. Here is some code for the IntervalRequirement class that is being used to match against the ShiftAssignment: public class IntervalRequirement implements Comparable<IntervalRequirement> { private int dayAppliesTo; private int interval; private int intervalMinutes; private Position position; private int staffingRequired; @Override public int compareTo(IntervalRequirement other) { return this.interval - other.interval; } @Override public boolean equals(Object o) { if (this == o) { return true; } else if (o instanceof IntervalRequirement) { IntervalRequirement other = (IntervalRequirement) o; return new EqualsBuilder() .append(this.interval, other.interval) .append(this.position, other.position) .append(this.staffingRequired, other.staffingRequired) .isEquals(); } else { return false; } @Override public int hashCode() { return new HashCodeBuilder() .append(getClass()) .append(this.interval) .append(this.position) .append(this.staffingRequired) .toHashCode(); } ... }

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