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 com.aliyun.odps.mapred.bridge.streaming.io;
  
  import java.io.DataOutput;
  import java.io.IOException;
  
  import com.aliyun.odps.data.Record;
  import com.aliyun.odps.mapred.bridge.streaming.PipeMapRed;
  
  /**
   * InputWriter that writes the client's input as text.
   */
  public class RecordInputWriter extends InputWriter<Object, Record> {
  
    private DataOutput clientOut;
    private byte[] inputSeparator;
  
    @Override
    public void initialize(PipeMapRed pipeMapRed) throws IOException {
      super.initialize(pipeMapRed);
      clientOut = pipeMapRed.getClientOutput();
      // FIXME  key-value separator VS field separator
      inputSeparator = pipeMapRed.getInputSeparator();
    }
  
    @Override
    public void writeKey(Object key) throws IOException {
      // no key for table record
    }
  
    @Override
    public void writeValue(Record value) throws IOException {
      for (int col = 0; col < value.getColumnCount(); col++) {
        if (col > 0) {
          clientOut.write(inputSeparator);
        }
        Object colValue = value.get(col);
        if (colValue == null) {
          colValue = "";
        }
        TextInputWriter.writeUTF8(colValue, clientOut);
      }
      clientOut.write('\n');
    }
  
  }
  