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.datastore.block;
  
  import java.util.List;
  import java.util.Map;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.apache.carbondata.core.cache.Cacheable;
  import org.apache.carbondata.core.datastore.DataRefNode;
  import org.apache.carbondata.core.mutate.DeleteDeltaVo;
  
  public abstract class AbstractIndex implements Cacheable {
  
    /**
     * vo class which will hold the RS information of the block
     */
    protected SegmentProperties segmentProperties;
  
    /**
     * data block
     */
    protected DataRefNode dataRefNode;
  
    /**
     * atomic integer to maintain the access count for a column access
     */
    protected AtomicInteger accessCount = new AtomicInteger();
  
    /**
     * Table block meta size.
     */
    protected long memorySize;
  
    /**
     * last fetch delete deltaFile timestamp
     */
    private long deleteDeltaTimestamp;
  
    public List<TableBlockInfo> getBlockInfos() {
      return blockInfos;
    }
  
    protected List<TableBlockInfo> blockInfos;
  
    /**
     * map of blockletIdAndPageId to deleted rows
     */
    private Map<String, DeleteDeltaVo> deletedRowsMap;
    /**
     * @return the segmentProperties
     */
    public SegmentProperties getSegmentProperties() {
      return segmentProperties;
    }
  
    /**
     * @return the dataBlock
     */
    public DataRefNode getDataRefNode() {
      return dataRefNode;
    }
  
    /**
     * the method returns the access count
     *
     * @return
     */
    @Override
    public int getAccessCount() {
      return accessCount.get();
    }
  
    /**
     * The method returns table block size
     *
     * @return
     */
    @Override
    public long getMemorySize() {
      return this.memorySize;
    }
  
    @Override
    public void invalidate() {
  
    }
  
    /**
     * The method is used to set the access count
     */
    public void incrementAccessCount() {
      accessCount.incrementAndGet();
    }
  
    /**
     * This method will release the objects and set default value for primitive types
     */
    public void clear() {
      decrementAccessCount();
    }
  
    /**
     * This method will decrement the access count for a column by 1
     * whenever a column usage is complete
     */
    private void decrementAccessCount() {
      if (accessCount.get() > 0) {
        accessCount.decrementAndGet();
      }
    }
  
    /**
     * the method is used to set the memory size of the b-tree
     * @param memorySize
     */
    public void setMemorySize(long memorySize) {
      this.memorySize = memorySize;
    }
  
    /**
     * @return latest deleted delta timestamp
     */
    public long getDeleteDeltaTimestamp() {
      return deleteDeltaTimestamp;
    }
  
    /**
     * set the latest delete delta timestamp
     * @param deleteDeltaTimestamp
     */
    public void setDeleteDeltaTimestamp(long deleteDeltaTimestamp) {
      this.deleteDeltaTimestamp = deleteDeltaTimestamp;
    }
  
    /**
     * @return the deleted record for block map
     */
    public Map<String, DeleteDeltaVo> getDeletedRowsMap() {
      return deletedRowsMap;
    }
  
    /**
     * @param deletedRowsMap
     */
    public void setDeletedRowsMap(Map<String, DeleteDeltaVo> deletedRowsMap) {
      this.deletedRowsMap = deletedRowsMap;
    }
  }
  