Java tutorial
/* Developed by the European Commission - Directorate General for Maritime Affairs and Fisheries @ European Union, 2015-2016. This file is part of the Integrated Fisheries Data Management (IFDM) Suite. The IFDM Suite is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version. The IFDM Suite 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 General Public License for more details. You should have received a copy of the GNU General Public License along with the IFDM Suite. If not, see <http://www.gnu.org/licenses/>. */ package eu.europa.ec.fisheries.uvms.rules.mapper; import java.util.Arrays; import java.util.Collections; import java.util.List; import lombok.NoArgsConstructor; import lombok.extern.slf4j.Slf4j; import org.apache.commons.collections.CollectionUtils; import org.apache.commons.lang.StringUtils; /** * Created by kovian on 13/12/2017. */ @Slf4j @NoArgsConstructor public abstract class AbstractRulesBaseMapper { String joinListOfStringsInCommaSeparatedString(List<String> xpaths) { if (CollectionUtils.isEmpty(xpaths)) { return StringUtils.EMPTY; } return StringUtils.join(xpaths, ","); } List<String> splitSingleStringByComma(String xpathListCommaSeparated) { if (StringUtils.isEmpty(xpathListCommaSeparated)) { return Collections.singletonList(null); } return Arrays.asList(xpathListCommaSeparated.split("\\s*,\\s*")); } }