Package org.jacop.set.constraints
Class ChannelIntSet
java.lang.Object
org.jacop.constraints.DecomposedConstraint<Constraint>
org.jacop.constraints.Constraint
org.jacop.set.constraints.ChannelIntSet
- All Implemented Interfaces:
SatisfiedPresent
Channel constraint requires that array of int variables x and array
of set variables y are related such that (x[i] = j) <->
(i in s[j]). Indexes start form 0, both for integer and set variables,
by default. To define other starting index use offset definitions.
- Version:
- 4.10
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Field Summary
FieldsModifier and TypeFieldDescription(package private) boolean
(package private) static AtomicInteger
(package private) int
(package private) int
(package private) int
(package private) int
(package private) SetVar[]
(package private) IntVar[]
Fields inherited from class org.jacop.constraints.Constraint
atomicExecution, consistencyPruningEvents, constraintScope, earlyTerminationOK, increaseWeight, numberId, scope, trace
Fields inherited from class org.jacop.constraints.DecomposedConstraint
queueIndex
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Constructor Summary
ConstructorsConstructorDescriptionChannelIntSet
(IntVar[] x, SetVar[] s) It constructs a Channel constraint.ChannelIntSet
(IntVar[] x, SetVar[] s, int offsetInt, int offsetSet) It constructs a Channel constraint. -
Method Summary
Modifier and TypeMethodDescription(package private) boolean
void
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, 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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Constructor Details
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ChannelIntSet
It constructs a Channel constraint.- Parameters:
x
- array of integer variables.s
- array of set variables.offsetInt
- offset for integer variables array.offsetSet
- offset for set variables array.
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ChannelIntSet
It constructs a Channel constraint.- Parameters:
x
- array of integer variables.s
- array of set variables.
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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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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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allGround
boolean allGround() -
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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getDefaultConsistencyPruningEvent
public int getDefaultConsistencyPruningEvent()- Specified by:
getDefaultConsistencyPruningEvent
in classConstraint
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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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