Package org.jacop.set.constraints
Class Match
- java.lang.Object
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- org.jacop.constraints.DecomposedConstraint<Constraint>
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- org.jacop.constraints.Constraint
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- org.jacop.set.constraints.Match
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- All Implemented Interfaces:
SatisfiedPresent
public class Match extends Constraint implements SatisfiedPresent
This constraint matches the elements of the given set variable onto a list of integer variables.- Version:
- 4.7
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Field Summary
Fields Modifier and Type Field Description SetVar
a
It specifies a set variable whose values are being matched against integer variables from the list.(package private) static java.util.concurrent.atomic.AtomicInteger
idNumber
IntVar[]
list
It specifies the list of integer variables which value is being matched against elements from a set variable a.-
Fields inherited from class org.jacop.constraints.Constraint
atomicExecution, consistencyPruningEvents, constraintScope, earlyTerminationOK, increaseWeight, numberId, scope, trace
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Fields inherited from class org.jacop.constraints.DecomposedConstraint
queueIndex
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
consistency(Store store)
It is a (most probably incomplete) consistency function which removes the values from variables domains.int
getConsistencyPruningEvent(Var var)
It retrieves the pruning event which causes reevaluation of the constraint.int
getDefaultConsistencyPruningEvent()
boolean
satisfied()
It checks if the constraint is satisfied.java.lang.String
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, numberArgs, queueVariable, removeConstraint, requiresMonotonicity, setConsistencyPruningEvent, setConstraintScope, setScope, setScope, setScope, setScope, setScope, setWatchedVariableGrounded, supplyGuideFeedback, updateAFC, watchedVariableGrounded
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Methods inherited from class org.jacop.constraints.DecomposedConstraint
auxiliaryVariables, checkInput, checkInput, checkInputForDuplication, checkInputForDuplicationSkipSingletons, checkInputForNullness, checkInputForNullness, checkInputForNullness, derivative, getDubletonsSkipSingletons, imposeDecomposition
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Field Detail
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idNumber
static java.util.concurrent.atomic.AtomicInteger idNumber
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a
public SetVar a
It specifies a set variable whose values are being matched against integer variables from the list.
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list
public IntVar[] list
It specifies the list of integer variables which value is being matched against elements from a set variable a.
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Constructor Detail
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Match
public Match(SetVar a, IntVar[] list)
It constructs a match constraint to connect the value of set variable a to the values of integer variables provided in the list.- Parameters:
a
- set variable that is restricted to be equal to a set created from values specified by integer variables form the list.list
- of integer variables that is restricted to have the same elements as set variable a.
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Method Detail
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consistency
public void consistency(Store store)
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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getConsistencyPruningEvent
public int getConsistencyPruningEvent(Var var)
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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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
public java.lang.String toString()
Description copied from class:Constraint
It produces a string representation of a constraint state.- Overrides:
toString
in classConstraint
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