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.kafka.connect.data;
  
  import org.apache.kafka.connect.errors.DataException;
  
  import java.util.Calendar;
  import java.util.TimeZone;
  
  /**
   * <p>
   *     A date representing a calendar day with no time of day or timezone. The corresponding Java type is a {@link java.util.Date}
   *     with hours, minutes, seconds, milliseconds set to 0. The underlying representation is an integer representing the
   *     number of standardized days (based on a number of milliseconds with 24 hours/day, 60 minutes/hour, 60 seconds/minute,
   *     1000 milliseconds/second with n) since Unix epoch.
   * </p>
   */
  public class Date {
      public static final String LOGICAL_NAME = "org.apache.kafka.connect.data.Date";
  
      private static final long MILLIS_PER_DAY = 24 * 60 * 60 * 1000;
  
      private static final TimeZone UTC = TimeZone.getTimeZone("UTC");
  
      /**
       * Returns a SchemaBuilder for a Date. By returning a SchemaBuilder you can override additional schema settings such
       * as required/optional, default value, and documentation.
       * @return a SchemaBuilder
       */
      public static SchemaBuilder builder() {
          return SchemaBuilder.int32()
                  .name(LOGICAL_NAME)
                  .version(1);
      }
  
      public static final Schema SCHEMA = builder().schema();
  
      /**
       * Convert a value from its logical format ({@link java.util.Date}) to its encoded format (int).
       * @param value the logical value
       * @return the encoded value
       */
      public static int fromLogical(Schema schema, java.util.Date value) {
          if (!(LOGICAL_NAME.equals(schema.name())))
              throw new DataException("Requested conversion of Date object but the schema does not match.");
          Calendar calendar = Calendar.getInstance(UTC);
          calendar.setTime(value);
          if (calendar.get(Calendar.HOUR_OF_DAY) != 0 || calendar.get(Calendar.MINUTE) != 0 ||
                  calendar.get(Calendar.SECOND) != 0 || calendar.get(Calendar.MILLISECOND) != 0) {
              throw new DataException("Kafka Connect Date type should not have any time fields set to non-zero values.");
          }
          long unixMillis = calendar.getTimeInMillis();
          return (int) (unixMillis / MILLIS_PER_DAY);
      }
  
      /**
       * Convert a value from its encoded format (int) to its logical format ({@link java.util.Date}).
       * @param value the encoded value
       * @return the logical value
       */
      public static java.util.Date toLogical(Schema schema, int value) {
          if (!(LOGICAL_NAME.equals(schema.name())))
              throw new DataException("Requested conversion of Date object but the schema does not match.");
          return new java.util.Date(value * MILLIS_PER_DAY);
      }
  }
  