Package org.jacop.constraints
Class ChannelReif
java.lang.Object
org.jacop.constraints.DecomposedConstraint<Constraint>
org.jacop.constraints.Constraint
org.jacop.constraints.ChannelReif
- All Implemented Interfaces:
SatisfiedPresent
ChannelReif constraints "constraint" <=> B.
- Version:
- 4.9
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Nested Class Summary
Nested Classes -
Field Summary
FieldsModifier and TypeFieldDescription(package private) static final AtomicInteger
(package private) final ChannelReif.Item[]
It specifies variables b and related values for variable x.(package private) final int
length of vector bs.final IntVar
Variables that is checked for a value.Fields inherited from class org.jacop.constraints.Constraint
afcWeight, atomicExecution, consistencyPruningEvents, constraintScope, earlyTerminationOK, increaseWeight, numberId, scope, trace, watchedVariableGrounded
Fields inherited from class org.jacop.constraints.DecomposedConstraint
queueIndex
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Constructor Summary
ConstructorsConstructorDescriptionChannelReif
(IntVar x, Map<Integer, ? extends IntVar> bs) ChannelReif
(IntVar x, IntVar[] bs) ChannelReif
(IntVar x, IntVar[] bs, int[] value) It creates ChannelReif constraint.ChannelReif
(IntVar x, IntVar[] bs, IntDomain value) It creates ChannelReif constraint. -
Method Summary
Modifier and TypeMethodDescriptionvoid
consistency
(Store store) It is a (most probably incomplete) consistency function which removes the values from variables domains.int
void
It imposes the constraint in a given store.boolean
It checks if the constraint is satisfied.private void
swap
(int i, int j) (package private) static int[]
toString()
It produces a string representation of a constraint state.Methods inherited from class org.jacop.constraints.Constraint
afc, arguments, cleanAfterFailure, decompose, getConsistencyPruningEvent, getGuideConstraint, getGuideValue, getGuideVariable, grounded, grounded, id, impose, imposeDecomposition, increaseWeight, intArrayToString, long2int, numberArgs, queueVariable, removeConstraint, requiresMonotonicity, setConsistencyPruningEvent, setConstraintScope, setScope, setScope, setScope, setScope, setScope, setWatchedVariableGrounded, supplyGuideFeedback, toInt, toInt, updateAFC, watchedVariableGrounded
Methods inherited from class org.jacop.constraints.DecomposedConstraint
auxiliaryVariables, checkInput, checkInput, checkInputForDuplication, checkInputForDuplicationSkipSingletons, checkInputForNullness, checkInputForNullness, checkInputForNullness, derivative, getDubletonsSkipSingletons, imposeDecomposition
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Field Details
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idNumber
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x
Variables that is checked for a value. -
n
final int nlength of vector bs. -
item
It specifies variables b and related values for variable x. -
position
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valueMap
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Constructor Details
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ChannelReif
It creates ChannelReif constraint.- Parameters:
x
- variable to be checked.bs
- array representing the status of equality x = i.value
- array of values that are checked against x.
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ChannelReif
It creates ChannelReif constraint.- Parameters:
x
- variable to be checked.bs
- array representing the status of equality x = i.value
- set of values that are checked against x.
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ChannelReif
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ChannelReif
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Method Details
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toArray
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consistency
Description copied from class:Constraint
It is a (most probably incomplete) consistency function which removes the values from variables domains. Only values which do not have any support in a solution space are removed.- Specified by:
consistency
in classConstraint
- Parameters:
store
- constraint store within which the constraint consistency is being checked.
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swap
private void swap(int i, int j) -
getDefaultConsistencyPruningEvent
public int getDefaultConsistencyPruningEvent()- Specified by:
getDefaultConsistencyPruningEvent
in classConstraint
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satisfied
public boolean satisfied()Description copied from interface:SatisfiedPresent
It checks if the constraint is satisfied. It can return false even if constraint is satisfied but not all variables in its scope are grounded. It needs to return true if all variables in its scope are grounded and constraint is satisfied.Implementations of this interface for constraints that are not PrimitiveConstraint may require constraint imposition and consistency check as a requirement to work correctly.
- Specified by:
satisfied
in interfaceSatisfiedPresent
- Returns:
- true if constraint is possible to verify that it is satisfied.
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impose
Description copied from class:Constraint
It imposes the constraint in a given store.- Overrides:
impose
in classConstraint
- Parameters:
store
- the constraint store to which the constraint is imposed to.
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toString
Description copied from class:Constraint
It produces a string representation of a constraint state.- Overrides:
toString
in classConstraint
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