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.page.statistics;
  
  import java.math.BigDecimal;
  
  import org.apache.carbondata.core.metadata.datatype.DataType;
  import org.apache.carbondata.core.util.ByteUtil;
  
  public class KeyPageStatsCollector implements ColumnPageStatsCollector {
  
    private DataType dataType;
  
    private byte[] min, max;
  
    public static KeyPageStatsCollector newInstance(DataType dataType) {
      return new KeyPageStatsCollector(dataType);
    }
  
    private KeyPageStatsCollector(DataType dataType) {
      this.dataType = dataType;
    }
  
    @Override
    public void updateNull(int rowId) {
  
    }
  
    @Override
    public void update(byte value) {
  
    }
  
    @Override
    public void update(short value) {
  
    }
  
    @Override
    public void update(int value) {
  
    }
  
    @Override
    public void update(long value) {
  
    }
  
    @Override
    public void update(double value) {
  
    }
  
    @Override
    public void update(float value) {
  
    }
  
    @Override
    public void update(BigDecimal value) {
  
    }
  
    @Override
    public void update(byte[] value) {
      if (null == min) {
        min = value;
      }
      if (null == max) {
        max = value;
      }
      if (ByteUtil.UnsafeComparer.INSTANCE.compareTo(min, value) > 0) {
        min = value;
      }
      if (ByteUtil.UnsafeComparer.INSTANCE.compareTo(max, value) < 0) {
        max = value;
      }
    }
  
    @Override
    public SimpleStatsResult getPageStats() {
      return new SimpleStatsResult() {
  
        @Override
        public Object getMin() {
          return min;
        }
  
        @Override
        public Object getMax() {
          return max;
        }
  
        @Override
        public int getDecimalCount() {
          return 0;
        }
  
        @Override
        public DataType getDataType() {
          return dataType;
        }
  
        @Override
        public boolean writeMinMax() {
          return true;
        }
  
      };
    }
  }
  