/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* This program is free software: you can redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this program.
* If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.operator.meta.branch;
import com.rapidminer.example.ExampleSet;
import com.rapidminer.operator.OperatorException;
import com.rapidminer.operator.UserError;
import com.rapidminer.parameter.UndefinedParameterError;
/**
* This condition tests if the provided example set has a minimum number of regular attributes.
*
* @author Ingo Mierswa
*/
public class MinNumberOfAttributesCondition implements ProcessBranchCondition {
/**
* Constructor used by reflection.
*/
public MinNumberOfAttributesCondition() {}
@Override
public boolean check(ProcessBranch operator, String value) throws OperatorException {
if (value == null) {
throw new UndefinedParameterError(ProcessBranch.PARAMETER_CONDITION_VALUE, operator);
}
int minNumber = 0;
try {
minNumber = Integer.parseInt(value);
} catch (NumberFormatException e) {
throw new UserError(operator, 207, new Object[] { value, ProcessBranch.PARAMETER_CONDITION_VALUE, e });
}
ExampleSet exampleSet = operator.getConditionInput(ExampleSet.class);
return exampleSet.getAttributes().size() >= minNumber;
}
}