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.Evolving;
  import org.apache.spark.sql.connector.write.streaming.StreamingWrite;
  
  /**
   * An interface for building the {@link Write}. Implementations can mix in some interfaces to
   * support different ways to write data to data sources.
   *
   * Unless modified by a mixin interface, the {@link Write} configured by this builder is to
   * append data without affecting existing data.
   *
   * @since 3.0.0
   */
  @Evolving
  public interface WriteBuilder {
  
    /**
     * Returns a logical {@link Write} shared between batch and streaming.
     *
     * @since 3.2.0
     */
    default Write build() {
      return new Write() {
        @Override
        public BatchWrite toBatch() {
          return buildForBatch();
        }
  
        @Override
        public StreamingWrite toStreaming() {
          return buildForStreaming();
        }
      };
    }
  
    /**
     * Returns a {@link BatchWrite} to write data to batch source.
     *
     * @deprecated use {@link #build()} instead.
     */
    @Deprecated
    default BatchWrite buildForBatch() {
      throw new UnsupportedOperationException(getClass().getName() +
        " does not support batch write");
    }
  
    /**
     * Returns a {@link StreamingWrite} to write data to streaming source.
     *
     * @deprecated use {@link #build()} instead.
     */
    @Deprecated
    default StreamingWrite buildForStreaming() {
      throw new UnsupportedOperationException(getClass().getName() +
        " does not support streaming write");
    }
  }
  