com.aliyun.odps.io

Class BigDecimalWritable.Comparator

java.lang.Object

com.aliyun.odps.io.WritableComparator

com.aliyun.odps.io.BigDecimalWritable.Comparator

All Implemented Interfaces:

RawComparator, Comparator

Enclosing class:

BigDecimalWritable

public static class BigDecimalWritable.Comparator
extends WritableComparator

A Comparator optimized for BigDecimalWritable.

Constructor Summary

Constructors

Constructor and Description
Comparator()

Method Summary

Modifier and Type	Method and Description
int	compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) 本方法是 RawComparator 的低效实现，如果能提供此方法的高效实现，请重载此方法.

Methods inherited from class com.aliyun.odps.io.WritableComparator

compare, compare, compareBytes, define, get, getKeyClass, hashBytes, newKey, readDouble, readFloat, readInt, readLong, readUnsignedShort, readVInt, readVLong

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

Comparator

public Comparator()

Method Detail

compare

public int compare(byte[] b1,
                   int s1,
                   int l1,
                   byte[] b2,
                   int s2,
                   int l2)

Description copied from class: WritableComparator

本方法是 RawComparator 的低效实现，如果能提供此方法的高效实现，请重载此方法.

本方法的默认实现是：先通过 Writable.readFields(DataInput) 将二进制表示反序列化为 WritableComparable 对象，然后调用 WritableComparator.compare(WritableComparable, WritableComparable) 进行比较。

Specified by:

compare in interface RawComparator

Overrides:

compare in class WritableComparator

Parameters:

b1 - 对象1二进制内容所在的byte数组

s1 - 对象1二进制内容在b1的起始位置

l1 - 对象1二进制内容长度

b2 - 对象2二进制内容所在的byte数组

s2 - 对象2二进制内容在b2的起始位置

l2 - 对象2二进制内容长度

Returns:

对象1>对象2，返回1，对象1=对象2，返回0，对象1<对象2，返回-1