public class Assignment extends Constraint
Modifier and Type | Field and Description |
---|---|
IntVar[] |
d
It specifies a list of variables d.
|
int |
shiftD
It specifies a shift applied to variables d.
|
int |
shiftX
It specifies a shift applied to variables x.
|
IntVar[] |
x
It specifies a list of variables x.
|
static String[] |
xmlAttributes
It specifies the arguments required to be saved by an XML format as well as
the constructor being called to recreate an object from an XML format.
|
atomicExecution, consistencyPruningEvents, earlyTerminationOK, id, increaseWeight, numberArgs, numberId, trace
queueIndex
Constructor and Description |
---|
Assignment(ArrayList<? extends IntVar> xs,
ArrayList<? extends IntVar> ds)
It constructs an Assignment constraint with shift equal 0.
|
Assignment(ArrayList<? extends IntVar> xs,
ArrayList<? extends IntVar> ds,
int shiftX,
int shiftD)
It enforces the relationship x[d[i]-shiftX]=i+shiftD and
d[x[i]-shiftD]=i+shiftX.
|
Assignment(ArrayList<? extends Var> xs,
ArrayList<? extends Var> ds,
int min)
It enforces the relationship x[d[i]-min]=i+min and
d[x[i]-min]=i+min.
|
Assignment(IntVar[] xs,
IntVar[] ds)
It constructs an Assignment constraint with shift equal 0.
|
Assignment(IntVar[] xs,
IntVar[] ds,
int min)
It enforces the relationship x[d[i]-min]=i+min and
d[x[i]-min]=i+min.
|
Assignment(IntVar[] xs,
IntVar[] ds,
int shiftX,
int shiftD)
It enforces the relationship x[d[i]-shiftX]=i+shiftD and
d[x[i]-shiftD]=i+shiftX.
|
Modifier and Type | Method and Description |
---|---|
ArrayList<Var> |
arguments()
It returns the variables in a scope of the constraint.
|
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.
|
void |
impose(Store store)
It imposes the constraint in a given store.
|
void |
increaseWeight()
It increases the weight of the variables in the constraint scope.
|
void |
queueVariable(int level,
Var var)
This is a function called to indicate which variable in a scope of
constraint has changed.
|
void |
removeConstraint()
It removes the constraint by removing this constraint from all variables.
|
void |
removeLevel(int level)
This function is called in case of the backtrack, so a constraint can
clear the queue of changed variables which is no longer valid.
|
boolean |
satisfied()
It checks if the constraint is satisfied.
|
String |
toString()
It produces a string representation of a constraint state.
|
cleanAfterFailure, decompose, getGuideConstraint, getGuideValue, getGuideVariable, id, impose, imposeDecomposition, numberArgs, removeLevelLate, requiresMonotonicity, setConsistencyPruningEvent, supplyGuideFeedback
auxiliaryVariables, derivative, imposeDecomposition
public IntVar[] d
public int shiftD
public IntVar[] x
public int shiftX
public static String[] xmlAttributes
public Assignment(IntVar[] xs, IntVar[] ds, int shiftX, int shiftD)
xs
- array of variables xds
- array of variables dshiftX
- a shift of indexes in X array.shiftD
- a shift of indexes in D array.public Assignment(ArrayList<? extends IntVar> xs, ArrayList<? extends IntVar> ds, int shiftX, int shiftD)
xs
- arraylist of variables xds
- arraylist of variables dshiftX
- shiftD
- public Assignment(ArrayList<? extends IntVar> xs, ArrayList<? extends IntVar> ds)
xs
- arraylist of x variablesds
- arraylist of d variablespublic Assignment(ArrayList<? extends Var> xs, ArrayList<? extends Var> ds, int min)
xs
- arraylist of variables xds
- arraylist of variables dmin
- shiftpublic Assignment(IntVar[] xs, IntVar[] ds)
xs
- array of x variablesds
- array of d variablespublic ArrayList<Var> arguments()
Constraint
arguments
in class Constraint
public void removeLevel(int level)
Constraint
removeLevel
in class Constraint
level
- the level which is being removed.public void consistency(Store store)
Constraint
consistency
in class Constraint
store
- constraint store within which the constraint consistency is being checked.public int getConsistencyPruningEvent(Var var)
Constraint
getConsistencyPruningEvent
in class Constraint
var
- variable for which pruning event is retrievedpublic void impose(Store store)
Constraint
impose
in class Constraint
store
- the constraint store to which the constraint is imposed to.public void queueVariable(int level, Var var)
Constraint
queueVariable
in class Constraint
level
- the level of the store at which the change has occurred.var
- variable which has changed.public void removeConstraint()
Constraint
removeConstraint
in class Constraint
public boolean satisfied()
Constraint
satisfied
in class Constraint
public String toString()
Constraint
toString
in class Constraint
public void increaseWeight()
Constraint
increaseWeight
in class Constraint
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