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.schema;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.util.List;
  
  /**
   * Function that returns a {@link Table}.
   *
   * <p>As the name "macro" implies, this is invoked at "compile time", that is,
   * during query preparation. Compile-time expansion of table expressions allows
   * for some very powerful query-optimizations.
   */
  public interface TableMacro extends Function {
    /**
     * Applies arguments to yield a table.
     *
     * @param arguments Arguments
     * @return Table
     */
    TranslatableTable apply(List<? extends @Nullable Object> arguments);
  }
  