content: /*
   * 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.cassandra.config;
  
  import java.util.Objects;
  import java.util.function.IntSupplier;
  
  public class OptionaldPositiveInt
  {
      public static final int UNDEFINED_VALUE = -1;
      public static final OptionaldPositiveInt UNDEFINED = new OptionaldPositiveInt(UNDEFINED_VALUE);
  
      private final int value;
  
      public OptionaldPositiveInt(int value)
      {
          if (!(value == -1 || value >= 1))
              throw new IllegalArgumentException(String.format("Only -1 (undefined) and positive values are allowed; given %d", value));
          this.value = value;
      }
  
      public boolean isDefined()
      {
          return value != UNDEFINED_VALUE;
      }
  
      public int or(int defaultValue)
      {
          return value == UNDEFINED_VALUE ? defaultValue : value;
      }
  
      public int or(IntSupplier defaultValue)
      {
          return value == UNDEFINED_VALUE ? defaultValue.getAsInt() : value;
      }
  
      @Override
      public boolean equals(Object o)
      {
          if (this == o) return true;
          if (o == null || getClass() != o.getClass()) return false;
          OptionaldPositiveInt that = (OptionaldPositiveInt) o;
          return value == that.value;
      }
  
      @Override
      public int hashCode()
      {
          return Objects.hash(value);
      }
  
      @Override
      public String toString()
      {
          return !isDefined() ? "null" : Integer.toString(value);
      }
  }
  