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.beam.sdk.schemas.logicaltypes;
  
  import static org.apache.beam.sdk.util.Preconditions.checkArgumentNotNull;
  
  import java.time.Instant;
  import org.apache.beam.sdk.values.Row;
  
  /** A timestamp represented as nanoseconds since the epoch. */
  public class NanosInstant extends NanosType<Instant> {
    public static final String IDENTIFIER = "beam:logical_type:nanos_instant:v1";
  
    public NanosInstant() {
      super(IDENTIFIER);
    }
  
    @Override
    public Row toBaseType(Instant input) {
      return Row.withSchema(schema).addValues(input.getEpochSecond(), input.getNano()).build();
    }
  
    @Override
    public Instant toInputType(Row row) {
      return Instant.ofEpochSecond(
          checkArgumentNotNull(
              row.getInt64(0), "While trying to convert to Instant: Row missing seconds field"),
          checkArgumentNotNull(
              row.getInt32(1), "While traying to convert to Instant: Row missing nanos field"));
    }
  }
  