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.core.query.type;
  
  /**
   * @since 8.0.0
   */
  public class Bucket {
      public static final String INFINITE_NEGATIVE = "infinite-";
      public static final String INFINITE_POSITIVE = "infinite+";
  
      /**
       * The min value of this bucket representing.
       */
      private String min = "0";
      /**
       * The max value of this bucket representing.
       */
      private String max = "0";
  
      public Bucket() {
      }
  
      public Bucket(int min, int max) {
          setMin(min);
          setMax(max);
      }
  
      public Bucket setMin(int min) {
          this.min = String.valueOf(min);
          return this;
      }
  
      public Bucket setMax(int max) {
          this.max = String.valueOf(max);
          return this;
      }
  
      public Bucket infiniteMin() {
          this.min = INFINITE_NEGATIVE;
          return this;
      }
  
      public Bucket infiniteMax() {
          this.max = INFINITE_POSITIVE;
          return this;
      }
  
      public boolean isInfiniteMin() {
          return INFINITE_NEGATIVE.equals(this.min);
      }
  
      public boolean isInfiniteMax() {
          return INFINITE_POSITIVE.equals(this.max);
      }
  
      public int duration() {
          if (isInfiniteMin()) {
              return Integer.MIN_VALUE;
          }
          if (isInfiniteMax()) {
              return Integer.MAX_VALUE;
          }
          return Integer.parseInt(this.max) - Integer.parseInt(this.min);
      }
  }
  