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

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

All Implemented Interfaces:

GlobalParameterConstraint

public class OneMustBeSetGlobalConstraint
extends Object
implements GlobalParameterConstraint

Represents a global parameter constraint specifying that at least one parameter value of a given list of parameters (Parameter) has to be set.

Author:

Steffi Wanka

Field Summary

private List<Parameter<?,?>>

parameters List of parameters to be checked.

Constructor Summary

OneMustBeSetGlobalConstraint(List<Parameter<?,?>> params)
Creates a One-Must-Be-Set global parameter constraint.

Method Summary

String	getDescription() Returns a description of this global constraint.
void	test() Checks if at least one parameter value of the list of parameters specified is set.

Methods inherited from class java.lang.Object

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

Field Detail

parameters

private List<Parameter<?,?>> parameters

List of parameters to be checked.

Constructor Detail

OneMustBeSetGlobalConstraint

public OneMustBeSetGlobalConstraint(List<Parameter<?,?>> params)

Creates a One-Must-Be-Set global parameter constraint. That is, at least one parameter value of the given list of parameters has to be set.

Parameters:

params - list of parameters

Method Detail

test

public void test()
          throws ParameterException

Checks if at least one parameter value of the list of parameters specified is set. If not, a parameter exception is thrown.

Specified by:

test in interface GlobalParameterConstraint

Throws:

ParameterException - if the parameters don't satisfy the parameter constraint.

getDescription

public String getDescription()

Description copied from interface: GlobalParameterConstraint

Returns a description of this global constraint.

Specified by:

getDescription in interface GlobalParameterConstraint

Returns:

a description of this global constraint