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.utils;
  
  import java.io.Serializable;
  import java.util.List;
  import org.apache.beam.sdk.schemas.FieldValueTypeInformation;
  import org.apache.beam.sdk.schemas.Schema;
  import org.apache.beam.sdk.values.TypeDescriptor;
  
  /**
   * A naming policy for schema fields. This maps a name from the class (field name or getter name) to
   * the matching field name in the schema.
   */
  public interface FieldValueTypeSupplier extends Serializable {
    /** Return all the FieldValueTypeInformations. */
    List<FieldValueTypeInformation> get(TypeDescriptor<?> typeDescriptor);
  
    /**
     * Return all the FieldValueTypeInformations.
     *
     * <p>If the schema parameter is not null, then the returned list must be in the same order as
     * fields in the schema.
     */
    default List<FieldValueTypeInformation> get(TypeDescriptor<?> typeDescriptor, Schema schema) {
      return StaticSchemaInference.sortBySchema(get(typeDescriptor), schema);
    }
  }
  