code: /*
   * 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.spark.sql.connector.write;
  
  import org.apache.spark.annotation.Experimental;
  import org.apache.spark.sql.connector.distributions.Distribution;
  import org.apache.spark.sql.connector.distributions.UnspecifiedDistribution;
  import org.apache.spark.sql.connector.expressions.SortOrder;
  
  /**
   * A write that requires a specific distribution and ordering of data.
   *
   * @since 3.2.0
   */
  @Experimental
  public interface RequiresDistributionAndOrdering extends Write {
    /**
     * Returns the distribution required by this write.
     * <p>
     * Spark will distribute incoming records across partitions to satisfy the required distribution
     * before passing the records to the data source table on write.
     * <p>
     * Implementations may return {@link UnspecifiedDistribution} if they don't require any specific
     * distribution of data on write.
     *
     * @return the required distribution
     */
    Distribution requiredDistribution();
  
    /**
     * Returns the ordering required by this write.
     * <p>
     * Spark will order incoming records within partitions to satisfy the required ordering
     * before passing those records to the data source table on write.
     * <p>
     * Implementations may return an empty array if they don't require any specific ordering of data
     * on write.
     *
     * @return the required ordering
     */
    SortOrder[] requiredOrdering();
  }
  