de.lmu.ifi.dbs.elki.utilities.optionhandling.constraints
Class IntervalConstraint

java.lang.Object
  de.lmu.ifi.dbs.elki.utilities.optionhandling.constraints.IntervalConstraint

All Implemented Interfaces:

ParameterConstraint<Number>

public class IntervalConstraint
extends Object
implements ParameterConstraint<Number>

Represents an interval parameter constraint testing if a given value lies within the specified interval. The value of the number parameter ( NumberParameter ) tested has to be greater than (or equal to, if specified) than the specified low constraint value and less than (or equal to, if specified) than the specified high constraint value.

Nested Class Summary

static class

IntervalConstraint.IntervalBoundary Available interval boundary types types: IntervalConstraint.IntervalBoundary.OPEN denotes an opend interval, i.e. less than (or greater than) comparison IntervalConstraint.IntervalBoundary.CLOSE denotes a closed interval, i.e. an equal to or less than (or equal to or greater than) comparison

Field Summary

private IntervalConstraint.IntervalBoundary	highBoundary The interval boundary for the high constraint value (@see IntervalBoundary)
private Number	highConstraintValue The high constraint value (right interval boundary).
private IntervalConstraint.IntervalBoundary	lowBoundary The interval boundary for the low constraint value (@see IntervalBoundary)
private Number	lowConstraintValue The low constraint value (left interval boundary).

Constructor Summary

IntervalConstraint(Number lowConstraintValue, IntervalConstraint.IntervalBoundary lowBoundary, Number highConstraintValue, IntervalConstraint.IntervalBoundary highBoundary)
Creates an IntervalConstraint parameter constraint.

Method Summary

String	getDescription(String parameterName) Returns a description of this constraint.
void	test(Number t) Checks if the number value given by the number parameter is greater equal than the constraint value.

Methods inherited from class java.lang.Object

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

Field Detail

lowConstraintValue

private final Number lowConstraintValue

The low constraint value (left interval boundary).

lowBoundary

private final IntervalConstraint.IntervalBoundary lowBoundary

The interval boundary for the low constraint value (@see IntervalBoundary)

highConstraintValue

private final Number highConstraintValue

The high constraint value (right interval boundary).

highBoundary

private final IntervalConstraint.IntervalBoundary highBoundary

The interval boundary for the high constraint value (@see IntervalBoundary)

Constructor Detail

IntervalConstraint

public IntervalConstraint(Number lowConstraintValue,
                          IntervalConstraint.IntervalBoundary lowBoundary,
                          Number highConstraintValue,
                          IntervalConstraint.IntervalBoundary highBoundary)

Creates an IntervalConstraint parameter constraint.

That is, the value of the number parameter given has to be greater than (or equal to, if specified) than the specified low constraint value and less than (or equal to, if specified) than the specified high constraint value.

Parameters:

lowConstraintValue - the low constraint value (left interval boundary)

lowBoundary - the interval boundary for the low constraint value (@see IntervalBoundary)

highConstraintValue - the high constraint value (right interval boundary)

highBoundary - the interval boundary for the high constraint value (@see IntervalBoundary)

Method Detail

test

public void test(Number t)
          throws ParameterException

Checks if the number value given by the number parameter is greater equal than the constraint value. If not, a parameter exception is thrown.

Specified by:

test in interface ParameterConstraint<Number>

Parameters:

t - Value to be checked whether or not it fulfills the underlying parameter constraint.

Throws:

ParameterException - if the parameter to be tested does not fulfill the parameter constraint

getDescription

public String getDescription(String parameterName)

Description copied from interface: ParameterConstraint

Returns a description of this constraint.

Specified by:

getDescription in interface ParameterConstraint<Number>

Parameters:

parameterName - the name of the parameter this constraint is used for

Returns:

a description of this constraint