/**
* 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.gui.tools.dialogs;
/**
* Simple validation interface for generic input.
*
* @param <T>
* the type of the input
* @author Marcel Michel
* @since 7.0.0
*/
public interface InputValidator<T> {
/**
* Validates the given input string.
*
* @param input
* the input which should be validated
* @return An human readable error message if the input is not valid, otherwise {@code null}
*/
public String validateInput(T input);
}