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.spark.sql.streaming;
  
  import org.apache.spark.annotation.Experimental;
  import org.apache.spark.annotation.InterfaceStability;
  import org.apache.spark.sql.InternalOutputModes;
  
  /**
   * :: Experimental ::
   *
   * OutputMode is used to what data will be written to a streaming sink when there is
   * new data available in a streaming DataFrame/Dataset.
   *
   * @since 2.0.0
   */
  @Experimental
  @InterfaceStability.Evolving
  public class OutputMode {
  
    /**
     * OutputMode in which only the new rows in the streaming DataFrame/Dataset will be
     * written to the sink. This output mode can be only be used in queries that do not
     * contain any aggregation.
     *
     * @since 2.0.0
     */
    public static OutputMode Append() {
      return InternalOutputModes.Append$.MODULE$;
    }
  
    /**
     * OutputMode in which all the rows in the streaming DataFrame/Dataset will be written
     * to the sink every time these is some updates. This output mode can only be used in queries
     * that contain aggregations.
     *
     * @since 2.0.0
     */
    public static OutputMode Complete() {
      return InternalOutputModes.Complete$.MODULE$;
    }
  }
  