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.carbondata.processing.loading.steps;
  
  import java.io.IOException;
  import java.util.Iterator;
  import java.util.List;
  
  import org.apache.carbondata.common.CarbonIterator;
  import org.apache.carbondata.core.util.CarbonProperties;
  import org.apache.carbondata.processing.loading.AbstractDataLoadProcessorStep;
  import org.apache.carbondata.processing.loading.CarbonDataLoadConfiguration;
  import org.apache.carbondata.processing.loading.DataField;
  import org.apache.carbondata.processing.loading.parser.RowParser;
  import org.apache.carbondata.processing.loading.parser.impl.JsonRowParser;
  import org.apache.carbondata.processing.loading.row.CarbonRowBatch;
  import org.apache.carbondata.processing.util.CarbonDataProcessorUtil;
  
  /**
   * It reads data from record reader and sends data to next step.
   */
  public class JsonInputProcessorStepImpl extends AbstractDataLoadProcessorStep {
  
    private RowParser rowParser;
  
    private CarbonIterator<Object[]>[] inputIterators;
  
    private boolean isRawDataRequired = false;
  
    // cores used in SDK writer, set by the user
    private short sdkWriterCores;
  
    public JsonInputProcessorStepImpl(CarbonDataLoadConfiguration configuration,
        CarbonIterator<Object[]>[] inputIterators) {
      super(configuration, null);
      this.inputIterators = inputIterators;
      sdkWriterCores = configuration.getWritingCoresCount();
    }
  
    @Override
    public DataField[] getOutput() {
      return configuration.getDataFields();
    }
  
    @Override
    public void initialize() throws IOException {
      super.initialize();
      rowParser = new JsonRowParser(getOutput());
      // if logger is enabled then raw data will be required.
      this.isRawDataRequired = CarbonDataProcessorUtil.isRawDataRequired(configuration);
    }
  
    @Override
    public Iterator<CarbonRowBatch>[] execute() {
      int batchSize = CarbonProperties.getInstance().getBatchSize();
      List<CarbonIterator<Object[]>>[] readerIterators =
          CarbonDataProcessorUtil.partitionInputReaderIterators(inputIterators, sdkWriterCores);
      Iterator<CarbonRowBatch>[] outIterators = new Iterator[readerIterators.length];
      for (int i = 0; i < outIterators.length; i++) {
        outIterators[i] =
            new InputProcessorStepImpl.InputProcessorIterator(readerIterators[i], rowParser,
                batchSize, false, null, rowCounter, isRawDataRequired);
      }
      return outIterators;
    }
  
    @Override
    public void close() {
      if (!closed) {
        super.close();
        for (CarbonIterator inputIterator : inputIterators) {
          inputIterator.close();
        }
      }
    }
  
    @Override
    protected String getStepName() {
      return "Json Input Processor";
    }
  }
  