Package org.jacop.set.constraints
Class EinA
- 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.constraints.PrimitiveConstraint
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- org.jacop.set.constraints.EinA
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- All Implemented Interfaces:
SatisfiedPresent
,StoreAware
public class EinA extends PrimitiveConstraint
It constructs a constraint which makes sure that a given element is in the domain of the set variable.- Version:
- 4.8
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Field Summary
Fields Modifier and Type Field Description SetVar
a
It specifies the set variable which must contain a specified element.int
element
It specifies the element which must be present in the set variable.(package private) static java.util.concurrent.atomic.AtomicInteger
idNumber
boolean
strict
It specifies if the inclusion relation is strict.-
Fields inherited from class org.jacop.constraints.PrimitiveConstraint
notConsistencyPruningEvents
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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
getDefaultConsistencyPruningEvent()
protected int
getDefaultNestedConsistencyPruningEvent()
protected int
getDefaultNestedNotConsistencyPruningEvent()
protected int
getDefaultNotConsistencyPruningEvent()
void
notConsistency(Store store)
It makes pruning in such a way that constraint is notConsistent.boolean
notSatisfied()
It checks if constraint would be always not satisfied.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.PrimitiveConstraint
getNestedPruningEvent, getNotConsistencyPruningEvent, impose, include, setNotConsistencyPruningEvent
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Methods inherited from class org.jacop.constraints.Constraint
afc, arguments, cleanAfterFailure, decompose, getConsistencyPruningEvent, getGuideConstraint, getGuideValue, getGuideVariable, grounded, grounded, id, 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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element
public int element
It specifies the element which must be present in the set variable.
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a
public SetVar a
It specifies the set variable which must contain a specified element.
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strict
public boolean strict
It specifies if the inclusion relation is strict.
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Constructor Detail
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EinA
public EinA(int element, SetVar a, boolean strict)
It constructs an eInA constraint to restrict the domain of the variable.- Parameters:
a
- variable a for which the restriction is applied.element
- the element that has to be a part of the variable domain.strict
- it specifies if the inclusion relation is strict.
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EinA
public EinA(int element, SetVar a)
It constructs an eInA constraint to restrict the domain of the variable.- Parameters:
a
- variable a for which the restriction is applied.element
- the element that has to be a part of the variable domain.
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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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notConsistency
public void notConsistency(Store store)
Description copied from class:PrimitiveConstraint
It makes pruning in such a way that constraint is notConsistent. It removes values which always belong to a solution.- Specified by:
notConsistency
in classPrimitiveConstraint
- Parameters:
store
- the constraint store in which context the notConsistency technique is evaluated.
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notSatisfied
public boolean notSatisfied()
Description copied from class:PrimitiveConstraint
It checks if constraint would be always not satisfied.- Specified by:
notSatisfied
in classPrimitiveConstraint
- Returns:
- true if constraint must be notSatisfied, false otherwise.
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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.
- Returns:
- true if constraint is possible to verify that it is satisfied.
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getDefaultNestedConsistencyPruningEvent
protected int getDefaultNestedConsistencyPruningEvent()
- Overrides:
getDefaultNestedConsistencyPruningEvent
in classPrimitiveConstraint
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getDefaultNestedNotConsistencyPruningEvent
protected int getDefaultNestedNotConsistencyPruningEvent()
- Overrides:
getDefaultNestedNotConsistencyPruningEvent
in classPrimitiveConstraint
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getDefaultConsistencyPruningEvent
public int getDefaultConsistencyPruningEvent()
- Specified by:
getDefaultConsistencyPruningEvent
in classConstraint
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getDefaultNotConsistencyPruningEvent
protected int getDefaultNotConsistencyPruningEvent()
- Specified by:
getDefaultNotConsistencyPruningEvent
in classPrimitiveConstraint
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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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