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 com.aliyun.odps.table.record.constructor;
  
  import com.aliyun.odps.data.ArrayRecord;
  import com.aliyun.odps.data.Struct;
  import com.aliyun.odps.table.arrow.constructor.ArrowTimeStampWriter;
  import com.google.common.base.Preconditions;
  import org.apache.arrow.vector.TimeStampVector;
  import org.apache.arrow.vector.types.TimeUnit;
  
  import java.time.ZonedDateTime;
  import java.util.Date;
  import java.util.List;
  
  public class ArrowDateTimeWriterImpl {
  
      private static long transformToEpochTime(Object datetime) {
          long longValue;
          if (datetime instanceof ZonedDateTime) {
              longValue = ((ZonedDateTime) datetime).toInstant().toEpochMilli();
          } else {
              longValue = ((Date) datetime).getTime();
          }
          return longValue;
      }
  
      public static final class RecordDateTimeWriter extends ArrowTimeStampWriter<ArrayRecord> {
  
          RecordDateTimeWriter(TimeStampVector timeStampVector) {
              super(timeStampVector);
              Preconditions.checkState(getType().getUnit().equals(TimeUnit.MILLISECOND));
          }
  
          @Override
          protected long readEpochTime(ArrayRecord row, int ordinal) {
              return transformToEpochTime(row.get(ordinal));
          }
  
          @Override
          protected boolean isNullAt(ArrayRecord row, int ordinal) {
              return row.isNull(ordinal);
          }
      }
  
      public static final class ListDateTimeWriter extends ArrowTimeStampWriter<List<Object>> {
  
          ListDateTimeWriter(TimeStampVector timeStampVector) {
              super(timeStampVector);
          }
  
          @Override
          protected long readEpochTime(List<Object> row, int ordinal) {
              return transformToEpochTime(row.get(ordinal));
          }
  
          @Override
          protected boolean isNullAt(List<Object> in, int ordinal) {
              return in.get(ordinal) == null;
          }
      }
  
      public static final class StructDateTimeWriter extends ArrowTimeStampWriter<Struct> {
  
          StructDateTimeWriter(TimeStampVector timeStampVector) {
              super(timeStampVector);
          }
  
          @Override
          protected long readEpochTime(Struct row, int ordinal) {
              return transformToEpochTime(row.getFieldValue(ordinal));
          }
  
          @Override
          protected boolean isNullAt(Struct in, int ordinal) {
              return in.getFieldValue(ordinal) == null;
          }
      }
  }
  