Java tutorial
/* * SonarQube * Copyright (C) 2009-2016 SonarSource SA * mailto:contact AT sonarsource DOT com * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package org.sonar.db.purge; import com.google.common.base.Function; import com.google.common.collect.Lists; import java.util.List; import javax.annotation.Nonnull; public class IdUuidPairs { private IdUuidPairs() { } public static List<Long> ids(List<IdUuidPair> pairs) { return Lists.transform(pairs, new IdUuidPairToIdFunction()); } public static List<String> uuids(List<IdUuidPair> pairs) { return Lists.transform(pairs, new IdUuidPairToUuidFunction()); } private static class IdUuidPairToIdFunction implements Function<IdUuidPair, Long> { @Override public Long apply(@Nonnull IdUuidPair pair) { return pair.getId(); } } private static class IdUuidPairToUuidFunction implements Function<IdUuidPair, String> { @Override public String apply(@Nonnull IdUuidPair pair) { return pair.getUuid(); } } }