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.core.scan.result.iterator;
  
  import java.util.List;
  import java.util.concurrent.ExecutorService;
  
  import org.apache.carbondata.core.scan.executor.infos.BlockExecutionInfo;
  import org.apache.carbondata.core.scan.model.QueryModel;
  import org.apache.carbondata.core.scan.result.RowBatch;
  
  /**
   * In case of detail query we cannot keep all the records in memory so for
   * executing that query are returning a iterator over block and every time next
   * call will come it will execute the block and return the result
   */
  public class DetailQueryResultIterator extends AbstractDetailQueryResultIterator<RowBatch> {
  
    private final Object lock = new Object();
  
    private final BlockExecutionInfo blockExecutionInfo = new BlockExecutionInfo();
  
    public DetailQueryResultIterator(List<BlockExecutionInfo> infos, QueryModel queryModel,
        ExecutorService execService) {
      super(infos, queryModel, execService);
      if (infos.size() > 0) {
        blockExecutionInfo
            .setComplexColumnParentBlockIndexes(infos.get(0).getComplexColumnParentBlockIndexes());
        blockExecutionInfo.setComplexDimensionInfoMap(infos.get(0).getComplexDimensionInfoMap());
      }
    }
  
    @Override
    public RowBatch next() {
      return getBatchResult();
    }
  
    private RowBatch getBatchResult() {
      RowBatch rowBatch = new RowBatch();
      synchronized (lock) {
        updateDataBlockIterator();
        if (dataBlockIterator != null) {
          rowBatch.setRows(dataBlockIterator.next());
          rowBatch.setCarbonDataFileWrittenVersion(carbonDataFileWrittenVersion);
        }
      }
      return rowBatch;
    }
  
    public BlockExecutionInfo getBlockExecutionInfo() {
      return blockExecutionInfo;
    }
  }
  