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.sort.unsafe.holder;
  
  import org.apache.carbondata.common.logging.LogServiceFactory;
  import org.apache.carbondata.processing.loading.sort.unsafe.UnsafeCarbonRowPage;
  import org.apache.carbondata.processing.loading.sort.unsafe.comparator.UnsafeRowComparator;
  
  import org.apache.log4j.Logger;
  
  /**
   * It is used for merging unsafe inmemory intermediate data
   */
  public class UnsafeInmemoryMergeHolder implements Comparable<UnsafeInmemoryMergeHolder> {
  
    private static final Logger LOGGER =
        LogServiceFactory.getLogService(UnsafeInmemoryMergeHolder.class.getName());
  
    private int counter;
  
    private int actualSize;
  
    private UnsafeCarbonRowPage rowPage;
  
    private UnsafeCarbonRowForMerge currentRow;
  
    private long address;
  
    private UnsafeRowComparator comparator;
  
    private Object baseObject;
  
    private byte index;
  
    public UnsafeInmemoryMergeHolder(UnsafeCarbonRowPage rowPage, byte index) {
      this.actualSize = rowPage.getBuffer().getActualSize();
      this.rowPage = rowPage;
      LOGGER.info("Processing unsafe inmemory rows page with size : " + actualSize);
      this.comparator = new UnsafeRowComparator(rowPage);
      this.baseObject = rowPage.getDataBlock().getBaseObject();
      currentRow = new UnsafeCarbonRowForMerge();
      this.index = index;
    }
  
    public boolean hasNext() {
      if (counter < actualSize) {
        return true;
      }
      return false;
    }
  
    public void readRow() {
      address = rowPage.getBuffer().get(counter);
      currentRow = new UnsafeCarbonRowForMerge();
      currentRow.address = address + rowPage.getDataBlock().getBaseOffset();
      currentRow.index = index;
      counter++;
    }
  
    public UnsafeCarbonRowForMerge getRow() {
      return currentRow;
    }
  
    @Override
    public int compareTo(UnsafeInmemoryMergeHolder o) {
      return comparator.compare(currentRow, baseObject, o.getRow(), o.getBaseObject());
    }
  
    @Override
    public boolean equals(Object obj) {
      if (this == obj) {
        return true;
      }
  
      if (!(obj instanceof UnsafeInmemoryMergeHolder)) {
        return false;
      }
  
      UnsafeInmemoryMergeHolder o = (UnsafeInmemoryMergeHolder)obj;
      return this == o;
    }
  
    @Override
    public int hashCode() {
      return super.hashCode();
    }
  
    public Object getBaseObject() {
      return baseObject;
    }
  
    public void close() {
      rowPage.freeMemory();
    }
  }
  