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 org.apache.beam.sdk.schemas.Schema;
  import org.apache.beam.sdk.values.Row;
  
  /** Base class for types representing timestamps or durations as nanoseconds. */
  abstract class NanosType<T> implements Schema.LogicalType<T, Row> {
    private final String identifier;
    // TODO(https://github.com/apache/beam/issues/20540): This should be a constant
    protected final Schema schema;
  
    NanosType(String identifier) {
      this.identifier = identifier;
      this.schema = Schema.builder().addInt64Field("seconds").addInt32Field("nanos").build();
    }
  
    @Override
    public String getIdentifier() {
      return identifier;
    }
  
    @Override
    public Schema.FieldType getArgumentType() {
      return Schema.FieldType.STRING;
    }
  
    @Override
    public String getArgument() {
      return "";
    }
  
    @Override
    public Schema.FieldType getBaseType() {
      return Schema.FieldType.row(schema);
    }
  }
  