Java tutorial
/* * Copyright 2015 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.glowroot.storage.util; import java.util.List; import com.google.common.collect.Lists; public class ServerRollups { private ServerRollups() { } public static List<String> getServerRollups(String serverId) { List<String> serverRollups = Lists.newArrayList(); int lastFoundIndex = -1; int nextFoundIndex; while ((nextFoundIndex = serverId.indexOf('/', lastFoundIndex)) != -1) { serverRollups.add(serverId.substring(0, nextFoundIndex)); lastFoundIndex = nextFoundIndex + 1; } serverRollups.add(serverId); return serverRollups; } }