org.drools.planner.core.score.buildin.hardandsoftlong
Interface HardAndSoftLongScore

All Superinterfaces:

Comparable<HardAndSoftLongScore>, Score<HardAndSoftLongScore>

All Known Implementing Classes:

DefaultHardAndSoftLongScore

public interface HardAndSoftLongScore
extends Score<HardAndSoftLongScore>

A HardAndSoftScore is a Score based on hard and soft long constraints. Hard constraints have priority over soft constraints.

Implementations must be immutable.

See Also:

Score, DefaultHardAndSoftLongScore

Method Summary

long	getHardScore() The total of the broken negative hard constraints and fulfilled positive hard constraints.
long	getSoftScore() The total of the broken negative soft constraints and fulfilled positive soft constraints.
boolean	isFeasible()

Methods inherited from interface org.drools.planner.core.score.Score

add, divide, multiply, subtract, toDoubleLevels

Methods inherited from interface java.lang.Comparable

compareTo

Method Detail

getHardScore

long getHardScore()

The total of the broken negative hard constraints and fulfilled positive hard constraints. Their weight is included in the total. The hard score is usually a negative number because most use cases only have negative constraints.

Returns:

higher is better, usually negative, 0 if no hard constraints are broken/fulfilled

getSoftScore

long getSoftScore()

The total of the broken negative soft constraints and fulfilled positive soft constraints. Their weight is included in the total. The soft score is usually a negative number because most use cases only have negative constraints.

In a normal score comparison, the soft score is irrelevant if the 2 scores don't have the same hard score.

Returns:

higher is better, usually negative, 0 if no soft constraints are broken/fulfilled

isFeasible

boolean isFeasible()

Returns:

true if the getHardScore() is 0L or higher