Class HardSoftDoubleScore
- java.lang.Object
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- org.optaplanner.core.api.score.AbstractScore<HardSoftDoubleScore>
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- org.optaplanner.core.api.score.buildin.hardsoftdouble.HardSoftDoubleScore
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- All Implemented Interfaces:
Serializable
,Comparable<HardSoftDoubleScore>
,FeasibilityScore<HardSoftDoubleScore>
,Score<HardSoftDoubleScore>
@Deprecated public final class HardSoftDoubleScore extends AbstractScore<HardSoftDoubleScore> implements FeasibilityScore<HardSoftDoubleScore>
Deprecated.Double-based scores are deprecated as floating point numbers are not associative (A + B + C == C + B + A) and therefore they are not compatible with incremental score calculation. UseHardSoftBigDecimalScore
or a scaledHardSoftLongScore
instead.ThisScore
is based on 2 levels of double constraints: hard and soft. Hard constraints have priority over soft constraints. Hard constraints determine feasibility.WARNING: NOT RECOMMENDED TO USE DUE TO ROUNDING ERRORS THAT CAUSE SCORE CORRUPTION. For example, this prints false:
System.out.println((0.01 + 0.05) == (0.01 + 0.02 + 0.03));
UseHardSoftBigDecimalScore
instead.This class is immutable.
- See Also:
Score
, Serialized Form
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Field Summary
Fields Modifier and Type Field Description static HardSoftDoubleScore
ONE_HARD
Deprecated.static HardSoftDoubleScore
ONE_SOFT
Deprecated.static HardSoftDoubleScore
ZERO
Deprecated.-
Fields inherited from class org.optaplanner.core.api.score.AbstractScore
INIT_LABEL, initScore
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description HardSoftDoubleScore
add(HardSoftDoubleScore addend)
Deprecated.Returns a Score whose value is (this + addend).int
compareTo(HardSoftDoubleScore other)
Deprecated.HardSoftDoubleScore
divide(double divisor)
Deprecated.Returns a Score whose value is (this / divisor).boolean
equals(Object o)
Deprecated.double
getHardScore()
Deprecated.The total of the broken negative hard constraints and fulfilled positive hard constraints.double
getSoftScore()
Deprecated.The total of the broken negative soft constraints and fulfilled positive soft constraints.int
hashCode()
Deprecated.boolean
isCompatibleArithmeticArgument(Score otherScore)
Deprecated.boolean
isFeasible()
Deprecated.APlanningSolution
is feasible if it has no broken hard constraints andScore.isSolutionInitialized()
is true.HardSoftDoubleScore
multiply(double multiplicand)
Deprecated.Returns a Score whose value is (this * multiplicand).HardSoftDoubleScore
negate()
Deprecated.Returns a Score whose value is (- this).static HardSoftDoubleScore
of(double hardScore, double softScore)
Deprecated.static HardSoftDoubleScore
ofHard(double hardScore)
Deprecated.static HardSoftDoubleScore
ofSoft(double softScore)
Deprecated.static HardSoftDoubleScore
ofUninitialized(int initScore, double hardScore, double softScore)
Deprecated.static HardSoftDoubleScore
parseScore(String scoreString)
Deprecated.HardSoftDoubleScore
power(double exponent)
Deprecated.Returns a Score whose value is (this ^ exponent).HardSoftDoubleScore
subtract(HardSoftDoubleScore subtrahend)
Deprecated.Returns a Score whose value is (this - subtrahend).Number[]
toLevelNumbers()
Deprecated.Returns an array of numbers representing the Score.String
toShortString()
Deprecated.LikeObject.toString()
, but trims score levels which have a zero weight.String
toString()
Deprecated.static HardSoftDoubleScore
valueOf(double hardScore, double softScore)
Deprecated.in favor ofof(double, double)
static HardSoftDoubleScore
valueOfUninitialized(int initScore, double hardScore, double softScore)
Deprecated.in favor ofofUninitialized(int, double, double)
HardSoftDoubleScore
withInitScore(int newInitScore)
Deprecated.For example0hard/-8soft
with-7
returns-7init/0hard/-8soft
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Methods inherited from class org.optaplanner.core.api.score.AbstractScore
assertNoInitScore, buildScorePattern, buildShortString, getInitPrefix, getInitScore, isSolutionInitialized, parseInitScore, parseLevelAsBigDecimal, parseLevelAsDouble, parseLevelAsInt, parseLevelAsLong, parseScoreTokens
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.optaplanner.core.api.score.Score
getInitScore, isSolutionInitialized, toInitializedScore
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Field Detail
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ZERO
public static final HardSoftDoubleScore ZERO
Deprecated.
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ONE_HARD
public static final HardSoftDoubleScore ONE_HARD
Deprecated.
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ONE_SOFT
public static final HardSoftDoubleScore ONE_SOFT
Deprecated.
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Method Detail
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parseScore
public static HardSoftDoubleScore parseScore(String scoreString)
Deprecated.
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ofUninitialized
public static HardSoftDoubleScore ofUninitialized(int initScore, double hardScore, double softScore)
Deprecated.
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valueOfUninitialized
@Deprecated public static HardSoftDoubleScore valueOfUninitialized(int initScore, double hardScore, double softScore)
Deprecated.in favor ofofUninitialized(int, double, double)
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of
public static HardSoftDoubleScore of(double hardScore, double softScore)
Deprecated.
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valueOf
@Deprecated public static HardSoftDoubleScore valueOf(double hardScore, double softScore)
Deprecated.in favor ofof(double, double)
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ofHard
public static HardSoftDoubleScore ofHard(double hardScore)
Deprecated.
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ofSoft
public static HardSoftDoubleScore ofSoft(double softScore)
Deprecated.
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getHardScore
public double getHardScore()
Deprecated.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
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getSoftScore
public double getSoftScore()
Deprecated.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
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withInitScore
public HardSoftDoubleScore withInitScore(int newInitScore)
Deprecated.Description copied from interface:Score
For example0hard/-8soft
with-7
returns-7init/0hard/-8soft
.- Specified by:
withInitScore
in interfaceScore<HardSoftDoubleScore>
- Parameters:
newInitScore
- always negative (except in statistical calculations), 0 if all planning variables are initialized- Returns:
- equals score except that
Score.getInitScore()
is set tonewInitScore
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isFeasible
public boolean isFeasible()
Deprecated.Description copied from interface:FeasibilityScore
APlanningSolution
is feasible if it has no broken hard constraints andScore.isSolutionInitialized()
is true.- Specified by:
isFeasible
in interfaceFeasibilityScore<HardSoftDoubleScore>
- Specified by:
isFeasible
in interfaceScore<HardSoftDoubleScore>
- Returns:
- true if the hard score is 0 or higher and the
Score.getInitScore()
is 0.
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add
public HardSoftDoubleScore add(HardSoftDoubleScore addend)
Deprecated.Description copied from interface:Score
Returns a Score whose value is (this + addend).- Specified by:
add
in interfaceScore<HardSoftDoubleScore>
- Parameters:
addend
- value to be added to this Score- Returns:
- this + addend
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subtract
public HardSoftDoubleScore subtract(HardSoftDoubleScore subtrahend)
Deprecated.Description copied from interface:Score
Returns a Score whose value is (this - subtrahend).- Specified by:
subtract
in interfaceScore<HardSoftDoubleScore>
- Parameters:
subtrahend
- value to be subtracted from this Score- Returns:
- this - subtrahend, rounded as necessary
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multiply
public HardSoftDoubleScore multiply(double multiplicand)
Deprecated.Description copied from interface:Score
Returns a Score whose value is (this * multiplicand). When rounding is needed, it should be floored (as defined byMath.floor(double)
).If the implementation has a scale/precision, then the unspecified scale/precision of the double multiplicand should have no impact on the returned scale/precision.
- Specified by:
multiply
in interfaceScore<HardSoftDoubleScore>
- Parameters:
multiplicand
- value to be multiplied by this Score.- Returns:
- this * multiplicand
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divide
public HardSoftDoubleScore divide(double divisor)
Deprecated.Description copied from interface:Score
Returns a Score whose value is (this / divisor). When rounding is needed, it should be floored (as defined byMath.floor(double)
).If the implementation has a scale/precision, then the unspecified scale/precision of the double divisor should have no impact on the returned scale/precision.
- Specified by:
divide
in interfaceScore<HardSoftDoubleScore>
- Parameters:
divisor
- value by which this Score is to be divided- Returns:
- this / divisor
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power
public HardSoftDoubleScore power(double exponent)
Deprecated.Description copied from interface:Score
Returns a Score whose value is (this ^ exponent). When rounding is needed, it should be floored (as defined byMath.floor(double)
).If the implementation has a scale/precision, then the unspecified scale/precision of the double exponent should have no impact on the returned scale/precision.
- Specified by:
power
in interfaceScore<HardSoftDoubleScore>
- Parameters:
exponent
- value by which this Score is to be powered- Returns:
- this ^ exponent
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negate
public HardSoftDoubleScore negate()
Deprecated.Description copied from interface:Score
Returns a Score whose value is (- this).- Specified by:
negate
in interfaceScore<HardSoftDoubleScore>
- Returns:
- - this
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toLevelNumbers
public Number[] toLevelNumbers()
Deprecated.Description copied from interface:Score
Returns an array of numbers representing the Score. Each number represents 1 score level. A greater score level uses a lower array index than a lesser score level.When rounding is needed, each rounding should be floored (as defined by
Math.floor(double)
). The length of the returned array must be stable for a specificScore
implementation.For example:
-0hard/-7soft
returnsnew int{-0, -7}
The level numbers do not contain the
Score.getInitScore()
. For example:-3init/-0hard/-7soft
also returnsnew int{-0, -7}
- Specified by:
toLevelNumbers
in interfaceScore<HardSoftDoubleScore>
- Returns:
- never null
- See Also:
ScoreDefinition.fromLevelNumbers(int, Number[])
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compareTo
public int compareTo(HardSoftDoubleScore other)
Deprecated.- Specified by:
compareTo
in interfaceComparable<HardSoftDoubleScore>
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toShortString
public String toShortString()
Deprecated.Description copied from interface:Score
LikeObject.toString()
, but trims score levels which have a zero weight. For example 0hard/-258soft returns -258soft.Do not use this format to persist information as text, use
Object.toString()
instead, so it can be parsed reliably.- Specified by:
toShortString
in interfaceScore<HardSoftDoubleScore>
- Returns:
- never null
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isCompatibleArithmeticArgument
public boolean isCompatibleArithmeticArgument(Score otherScore)
Deprecated.- Specified by:
isCompatibleArithmeticArgument
in interfaceScore<HardSoftDoubleScore>
- Parameters:
otherScore
- never null- Returns:
- true if the otherScore is accepted as a parameter of
Score.add(Score)
,Score.subtract(Score)
andComparable.compareTo(Object)
.
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