Package org.jacop.constraints
Class ArgMin
java.lang.Object
org.jacop.constraints.DecomposedConstraint<Constraint>
org.jacop.constraints.Constraint
org.jacop.constraints.ArgMin
- All Implemented Interfaces:
SatisfiedPresent
ArgMin constraint provides the index of the maximum
variable from all variables on the list.
- Version:
- 4.9
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Field Summary
FieldsModifier and TypeFieldDescription(package private) boolean
(package private) static final AtomicInteger
int
It specifies indexOffset within an element constraint list[index-indexOffset] = value.final IntVar[]
It specifies a list of variables among which a maximum value is being searched for.final IntVar
It specifies variable max which stores the maximum value present in the list.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
ConstructorsConstructorDescriptionIt constructs max constraint.It constructs max 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
It retrieves the pruning event which causes reevaluation of the constraint.int
boolean
It checks if the constraint is satisfied.toString()
It produces a string representation of a constraint state.Methods inherited from class org.jacop.constraints.Constraint
afc, arguments, cleanAfterFailure, decompose, getGuideConstraint, getGuideValue, getGuideVariable, grounded, grounded, id, impose, 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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firstConsistencyCheck
boolean firstConsistencyCheck -
list
It specifies a list of variables among which a maximum value is being searched for. -
minIndex
It specifies variable max which stores the maximum value present in the list. -
indexOffset
public int indexOffsetIt specifies indexOffset within an element constraint list[index-indexOffset] = value.
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Constructor Details
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ArgMin
It constructs max constraint.- Parameters:
minIndex
- variable denoting the index of the maximum valuelist
- the array of variables for which the index of the maximum value is imposed.indexOffset
- the offset for the index that is computed from 1 by default (if needed from 0, use -1 for this parameter)
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ArgMin
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ArgMin
It constructs max constraint.- Parameters:
minIndex
- variable denoting the index of minimum valuevariables
- the array of variables for which the minimum value is imposed.indexOffset
- the offset for the index that is computed from 1 by default (if needed from 0, use -1 for this parameter)
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ArgMin
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Method Details
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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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getDefaultConsistencyPruningEvent
public int getDefaultConsistencyPruningEvent()- Specified by:
getDefaultConsistencyPruningEvent
in classConstraint
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getConsistencyPruningEvent
Description copied from class:Constraint
It retrieves the pruning event which causes reevaluation of the constraint.- Overrides:
getConsistencyPruningEvent
in classConstraint
- Parameters:
var
- variable for which pruning event is retrieved- Returns:
- it returns the int code of the pruning event (GROUND, BOUND, ANY, NONE)
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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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toString
Description copied from class:Constraint
It produces a string representation of a constraint state.- Overrides:
toString
in classConstraint
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