Class InnerConstraintFactory<Solution_,Constraint_ extends Constraint>
- java.lang.Object
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- org.optaplanner.core.impl.score.stream.InnerConstraintFactory<Solution_,Constraint_>
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- All Implemented Interfaces:
ConstraintFactory
- Direct Known Subclasses:
BavetConstraintFactory
,DroolsConstraintFactory
public abstract class InnerConstraintFactory<Solution_,Constraint_ extends Constraint> extends Object implements ConstraintFactory
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Constructor Summary
Constructors Constructor Description InnerConstraintFactory()
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description <A> void
assertValidFromType(Class<A> fromType)
List<Constraint_>
buildConstraints(ConstraintProvider constraintProvider)
<A> UniConstraintStream<A>
from(Class<A> fromClass)
Start aConstraintStream
of all instances of the fromClass that are known asproblem facts
orplanning entities
.<A> BiConstraintStream<A,A>
fromUniquePair(Class<A> fromClass, BiJoiner<A,A> joiner)
Create a newBiConstraintStream
for every unique combination of A and another A with a higherPlanningId
for which theBiJoiner
is true (for the properties it extracts from both facts).abstract SolutionDescriptor<Solution_>
getSolutionDescriptor()
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.optaplanner.core.api.score.stream.ConstraintFactory
fromUnfiltered, fromUniquePair, fromUniquePair, fromUniquePair, fromUniquePair, fromUniquePair, getDefaultConstraintPackage
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Method Detail
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from
public <A> UniConstraintStream<A> from(Class<A> fromClass)
Description copied from interface:ConstraintFactory
Start aConstraintStream
of all instances of the fromClass that are known asproblem facts
orplanning entities
.If the fromClass is a
PlanningEntity
, then it will be automaticallyfiltered
to only contain fully initialized entities, for which each genuinePlanningVariable
(of the fromClass or a superclass thereof) is initialized (so when the value is not null - unlessPlanningVariable.nullable()
is modified). This filtering will NOT automatically apply to genuine planning variables of subclass planning entities of the fromClass.- Specified by:
from
in interfaceConstraintFactory
- Type Parameters:
A
- the type of the matched problem fact orplanning entity
- Parameters:
fromClass
- never null- Returns:
- never null
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fromUniquePair
public <A> BiConstraintStream<A,A> fromUniquePair(Class<A> fromClass, BiJoiner<A,A> joiner)
Description copied from interface:ConstraintFactory
Create a newBiConstraintStream
for every unique combination of A and another A with a higherPlanningId
for which theBiJoiner
is true (for the properties it extracts from both facts).Important: This is faster and more scalable than not using a
ConstraintFactory.fromUniquePair(Class)
joiner} followed by afilter
, because it applies hashing and/or indexing on the properties, so it doesn't create nor checks almost every combination of A and A.This method is syntactic sugar for
UniConstraintStream.join(Class, BiJoiner)
. It automatically adds alessThan
joiner on thePlanningId
of A.This method has overloaded methods with multiple
BiJoiner
parameters.- Specified by:
fromUniquePair
in interfaceConstraintFactory
- Type Parameters:
A
- the type of the matched problem fact orplanning entity
- Parameters:
fromClass
- never nulljoiner
- never null- Returns:
- a stream that matches every unique combination of A and another A for which the
BiJoiner
is true
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assertValidFromType
public <A> void assertValidFromType(Class<A> fromType)
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buildConstraints
public List<Constraint_> buildConstraints(ConstraintProvider constraintProvider)
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getSolutionDescriptor
public abstract SolutionDescriptor<Solution_> getSolutionDescriptor()
- Returns:
- never null
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