/**
 * Copyright 2011 The Apache Software Foundation
 *
 * 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.hadoop.hbase.filter;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

import org.apache.hadoop.hbase.filter.BinaryComparator;
import org.apache.hadoop.hbase.util.Bytes;

public class DecimalComparator extends BinaryComparator {

  protected byte[] msb = new byte[1];
  protected byte[] temp;

  public DecimalComparator() {

  }

  /**
   * Constructor
   * @param value value
   */
  public DecimalComparator(byte[] value) {
    super(value);
    byte b = value[0];
    msb[0] = (byte) ((b >> 7) & 1);
    temp = new byte[value.length];
    System.arraycopy(value, 0, temp, 0, value.length);
  }

  @Override
  public int compareTo(byte[] value, int offset, int length) {
    return super.compareTo(value, offset, length);
  }

  @Override
  public void readFields(DataInput in) throws IOException {
    super.readFields(in);
    msb = Bytes.readByteArray(in);
    temp = Bytes.readByteArray(in);
  }

  @Override
  public void write(DataOutput out) throws IOException {
    super.write(out);
    Bytes.writeByteArray(out, msb);
    Bytes.writeByteArray(out, temp);
  }

}