org.drools.planner.core.score.calculator
Interface ScoreCalculator

All Superinterfaces:

Cloneable

All Known Implementing Classes:

AbstractScoreCalculator, HardAndSoftLongScoreCalculator, HardAndSoftScoreCalculator, SimpleDoubleScoreCalculator, SimpleScoreCalculator

public interface ScoreCalculator
extends Cloneable

A wrapper for the elements of a Score, injected as a global in the WorkingMemory to avoid a performance problem in Drools Expert with using 2 or more accumulates in the same rule.

TODO remove when the rule that sums the final score can be written as a single rule and ScoreCalculator is dead

Method Summary

Score	calculateScore() Calculates the score: the solution (encountered at a step) with the highest score will be seen as the the best solution.
ScoreCalculator	clone()

Method Detail

calculateScore

Score calculateScore()

Calculates the score: the solution (encountered at a step) with the highest score will be seen as the the best solution.

The step score calculation should be kept stable over all steps.

When the solution is modified during a Move, the WorkingMemory's FactHandles should have been correctly notified. Before the score is calculated, all rules are fired, which should trigger an update of this instance.

Returns:

never null, the score of the solution

clone

ScoreCalculator clone()