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.merger;
  
  import java.util.Comparator;
  import java.util.List;
  
  import org.apache.carbondata.core.datastore.block.Distributable;
  import org.apache.carbondata.core.datastore.block.TableBlockInfo;
  
  public class NodeMultiBlockRelation implements Comparable<NodeMultiBlockRelation> {
  
    private final List<Distributable> blocks;
    private final String node;
  
    /**
     * comparator to sort by data size in descending order. This is used to assign big blocks to
     * bigger nodes first.
     */
    public static final Comparator<NodeMultiBlockRelation> DATA_SIZE_DESC_COMPARATOR =
        new Comparator<NodeMultiBlockRelation>() {
          @Override
          public int compare(NodeMultiBlockRelation o1, NodeMultiBlockRelation o2) {
            long diff = o1.getTotalSizeOfBlocks() - o2.getTotalSizeOfBlocks();
            return diff > 0 ? -1 : (diff < 0 ? 1 : 0);
          }
        };
    /**
     * comparator to sort by data size in ascending order. This is used to assign left over blocks to
     * smaller nodes first.
     */
    public static final Comparator<NodeMultiBlockRelation> DATA_SIZE_ASC_COMPARATOR =
        new Comparator<NodeMultiBlockRelation>() {
          @Override
          public int compare(NodeMultiBlockRelation o1, NodeMultiBlockRelation o2) {
            long diff = o1.getTotalSizeOfBlocks() - o2.getTotalSizeOfBlocks();
            return diff > 0 ? 1 : (diff < 0 ? -1 : 0);
          }
        };
    public NodeMultiBlockRelation(String node, List<Distributable> blocks) {
      this.node = node;
      this.blocks = blocks;
  
    }
  
    public List<Distributable> getBlocks() {
      return blocks;
    }
  
    public String getNode() {
      return node;
    }
  
    /**
     * get the total size of the blocks
     * @return size in bytes
     */
    public long getTotalSizeOfBlocks() {
      long totalSize = 0;
      if (blocks.get(0) instanceof TableBlockInfo) {
        for (Distributable block : blocks) {
          totalSize += ((TableBlockInfo) block).getBlockLength();
        }
      }
      return totalSize;
    }
  
    @Override
    public int compareTo(NodeMultiBlockRelation obj) {
      return this.blocks.size() - obj.getBlocks().size();
    }
  
    @Override
    public boolean equals(Object obj) {
      if (!(obj instanceof NodeMultiBlockRelation)) {
        return false;
      }
      NodeMultiBlockRelation o = (NodeMultiBlockRelation) obj;
      return blocks.equals(o.blocks) && node.equals(o.node);
    }
  
    @Override
    public int hashCode() {
      return blocks.hashCode() + node.hashCode();
    }
  }
  