Package org.projog.clp

Class FixedValue

java.lang.Object

org.projog.clp.FixedValue

All Implemented Interfaces:

Constraint, Expression, LeafExpression

public final class FixedValue
extends Object
implements LeafExpression

Represents a single immutable number.

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	FALSE
private static final int	TRUE
private final long	value

Constructor Summary

Constructors

Constructor	Description
FixedValue(long value)

Method Summary

Modifier and Type	Method	Description
ConstraintResult	enforce(ConstraintStore constraintStore)	Attempts to enforce this constraint using the given ConstraintStore.
long	getMax(ReadConstraintStore s)
long	getMin(ReadConstraintStore s)
ConstraintResult	prevent(ConstraintStore constraintStore)	Attempts to prevent this constraint using the given ConstraintStore.
ConstraintResult	reify(ReadConstraintStore constraintStore)
LeafExpression	replace(Function<LeafExpression,LeafExpression> function)	Returns new Constraint with LeafExpressions in this Constraint replaced with values returned from the given function.
ExpressionResult	setMax(ConstraintStore s, long max)
ExpressionResult	setMin(ConstraintStore s, long min)
ExpressionResult	setNot(ConstraintStore s, long not)
String	toString()
void	walk(Consumer<Expression> r)	Traverse this constraint.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

TRUE

private static final int TRUE

See Also:

• Constant Field Values

FALSE

private static final int FALSE

See Also:

• Constant Field Values

value

private final long value

Constructor Details

FixedValue

public FixedValue(long value)

Method Details

getMin

public long getMin(ReadConstraintStore s)

Specified by:

getMin in interface Constraint

Specified by:

getMin in interface Expression

getMax

public long getMax(ReadConstraintStore s)

Specified by:

getMax in interface Constraint

Specified by:

getMax in interface Expression

setNot

public ExpressionResult setNot(ConstraintStore s,
 long not)

Specified by:

setNot in interface Expression

setMin

public ExpressionResult setMin(ConstraintStore s,
 long min)

Specified by:

setMin in interface Constraint

Specified by:

setMin in interface Expression

setMax

public ExpressionResult setMax(ConstraintStore s,
 long max)

Specified by:

setMax in interface Constraint

Specified by:

setMax in interface Expression

enforce

public ConstraintResult enforce(ConstraintStore constraintStore)

Description copied from interface: Constraint

Attempts to enforce this constraint using the given ConstraintStore.

Specified by:

enforce in interface Constraint

prevent

public ConstraintResult prevent(ConstraintStore constraintStore)

Description copied from interface: Constraint

Attempts to prevent this constraint using the given ConstraintStore.

Specified by:

prevent in interface Constraint

reify

public ConstraintResult reify(ReadConstraintStore constraintStore)

Specified by:

reify in interface Constraint

walk

public void walk(Consumer<Expression> r)

Description copied from interface: Constraint

Traverse this constraint.

Specified by:

walk in interface Constraint

Specified by:

walk in interface Expression

Parameters:

r - will be called for each Expression contained within this Constraint.

replace

public LeafExpression replace(Function<LeafExpression,LeafExpression> function)

Description copied from interface: Constraint

Returns new Constraint with LeafExpressions in this Constraint replaced with values returned from the given function.

Specified by:

replace in interface Constraint

Specified by:

replace in interface Expression

Specified by:

replace in interface LeafExpression

Parameters:

function - returns the LeafExpression to use as a replacement for the LeafExpression it is called with, or null if the original LeafExpression should continue to be used.

Returns:

a new Constraint with LeafExpressions in this Constraint replaced with versions returned from function.

toString

public String toString()

Overrides:

toString in class Object