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.calcite.sql.validate.implicit;
  
  import org.apache.calcite.rel.type.RelDataTypeFactory;
  import org.apache.calcite.sql.validate.SqlValidator;
  
  import org.apiguardian.api.API;
  
  /** Factory for {@link TypeCoercion} objects.
   *
   * <p>A type coercion factory allows you to include custom rules of
   * implicit type coercion. Usually you should inherit the {@link TypeCoercionImpl}
   * and override the methods that you want to customize.
   *
   * <p>This interface is experimental and would change without notice.
   *
   * @see SqlValidator.Config#withTypeCoercionFactory
   */
  @API(status = API.Status.EXPERIMENTAL, since = "1.23")
  @FunctionalInterface
  public interface TypeCoercionFactory {
  
    /**
     * Creates a TypeCoercion.
     *
     * @param typeFactory Type factory
     * @param validator   SQL validator
     */
    TypeCoercion create(RelDataTypeFactory typeFactory, SqlValidator validator);
  }
  