code: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.apache.skywalking.oap.server.library.util;
  
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  public class CollectionUtils {
  
      public static boolean isEmpty(Map map) {
          return map == null || map.size() == 0;
      }
  
      public static boolean isEmpty(List list) {
          return list == null || list.size() == 0;
      }
  
      public static boolean isEmpty(Set set) {
          return set == null || set.size() == 0;
      }
  
      public static boolean isNotEmpty(List list) {
          return !isEmpty(list);
      }
  
      public static boolean isNotEmpty(Set set) {
          return !isEmpty(set);
      }
  
      public static boolean isNotEmpty(Map map) {
          return !isEmpty(map);
      }
  
      public static <T> boolean isNotEmpty(T[] array) {
          return array != null && array.length > 0;
      }
  
      public static boolean isEmpty(byte[] array) {
          return array == null || array.length == 0;
      }
  
      public static boolean isNotEmpty(byte[] array) {
          return !isEmpty(array);
      }
  }
  