content: /**
   * Copyright 2020 Alibaba Group Holding Limited.
   * <p>
   * Licensed 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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 com.alibaba.pegasus.builder;
  
  import com.alibaba.pegasus.service.job.protocol.JobClient.Sink;
  import com.alibaba.pegasus.service.protocol.PegasusClient.JobConfig;
  import com.google.protobuf.ByteString;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class ReduceBuilder extends AbstractBuilder {
      private static final Logger logger = LoggerFactory.getLogger(ReduceBuilder.class);
  
      public ReduceBuilder(JobConfig conf, ByteString source, Plan plan, Sink sink) {
          super(conf, source, plan, sink);
      }
  
      public JobBuilder unfold(ByteString func) {
          this.plan.chainUnfold(func);
          return new JobBuilder(this.conf, this.source, this.plan, this.sink);
      }
  }
  