001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.monitoring.reporting.web.plugin.json; 018 019 import java.util.Iterator; 020 import java.util.Map; 021 022 public final class Jsons { 023 public static String toJson(final Map<Long, Double> data) { // helper for gauges 024 final StringBuilder builder = new StringBuilder().append("["); 025 final Iterator<Map.Entry<Long,Double>> iterator = data.entrySet().iterator(); 026 while (iterator.hasNext()) { 027 final Map.Entry<Long, Double> entry = iterator.next(); 028 builder.append("[").append(entry.getKey()).append(", ").append(entry.getValue()).append("]"); 029 if (iterator.hasNext()) { 030 builder.append(", "); 031 } 032 } 033 return builder.append("]").toString(); 034 } 035 036 private Jsons() { 037 // no-op 038 } 039 }