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.mutate;
  
  import java.io.DataInput;
  import java.io.DataOutput;
  import java.io.IOException;
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.hadoop.io.Writable;
  
  /**
   * VO object which contains the info used in CDC case during cache loading in Index server
   */
  public class CdcVO implements Serializable, Writable {
  
    /**
     * This collection contains column to index mapping which give info about the index for a column
     * in IndexRow object to fetch min max
     */
    private Map<String, Integer> columnToIndexMap;
  
    /**
     * This list will contain the column indexes to fetch from the min max row in blocklet
     */
    private List<Integer> indexesToFetch;
  
    public CdcVO(Map<String, Integer> columnToIndexMap) {
      this.columnToIndexMap = columnToIndexMap;
    }
  
    public CdcVO() {
    }
  
    public Map<String, Integer> getColumnToIndexMap() {
      return columnToIndexMap;
    }
  
    public List<Integer> getIndexesToFetch() {
      return indexesToFetch;
    }
  
    @Override
    public void write(DataOutput dataOutput) throws IOException {
      Collection<Integer> indexesToFetch = columnToIndexMap.values();
      dataOutput.writeInt(indexesToFetch.size());
      for (Integer index : indexesToFetch) {
        dataOutput.writeInt(index);
        dataOutput.writeInt(index);
      }
    }
  
    @Override
    public void readFields(DataInput dataInput) throws IOException {
      this.indexesToFetch = new ArrayList<>();
      int lengthOfIndexes = dataInput.readInt();
      for (int i = 0; i < lengthOfIndexes; i++) {
        indexesToFetch.add(dataInput.readInt());
      }
    }
  }
  