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 com.aliyun.odps.io;
  
  import java.io.*;
  import java.math.BigDecimal;
  
  public class BigDecimalWritable implements WritableComparable<BigDecimalWritable> {
  
    private BigDecimal value;
  
    public BigDecimalWritable() {
      value = BigDecimal.ZERO;
    }
  
    public BigDecimalWritable(BigDecimal bi) {
      value = bi;
    }
  
    public void set(BigDecimal value) {
      this.value = value;
    }
  
    public BigDecimal get() {
      return value;
    }
  
    @Override
    public int compareTo(BigDecimalWritable o) {
      return value.compareTo(o.get());
    }
  
    @Override
    public int hashCode() {
      return value.hashCode();
    }
  
    @Override
    public boolean equals(Object o) {
      if (!(o instanceof BigDecimalWritable)) {
        return false;
      }
      return compareTo((BigDecimalWritable)o) == 0;
    }
  
    @Override
    public String toString() {
      return value.toString();
    }
  
    @Override
    public void readFields(DataInput in) throws IOException {
      value = new BigDecimal(Text.readString(in));
    }
  
    @Override
    public void write(DataOutput out) throws IOException {
      Text.writeString(out, value.toPlainString());
    }
  
    /** A Comparator optimized for BigDecimalWritable. */
    //TODO consider trying to do something a big more optimizied
    public static class Comparator extends WritableComparator {
      private BigDecimalWritable thisValue = new BigDecimalWritable();
      private BigDecimalWritable thatValue = new BigDecimalWritable();
  
      public Comparator() {
        super(BigDecimalWritable.class);
      }
  
      @Override
      public int compare(byte[] b1, int s1, int l1,
          byte[] b2, int s2, int l2) {
        try {
          thisValue.readFields(new DataInputStream(new ByteArrayInputStream(b1,s1,l1)));
          thatValue.readFields(new DataInputStream(new ByteArrayInputStream(b2,s2,l2)));
        } catch (IOException e) {
          throw new RuntimeException("Unable to read field from byte array: " + e);
        }
        return thisValue.compareTo(thatValue);
      }
    }
  
    // register this comparator
    static {
      WritableComparator.define(BigDecimalWritable.class, new Comparator());
    }
  }