com.aliyun.odps.io

Class Text.Comparator

java.lang.Object

com.aliyun.odps.io.WritableComparator

com.aliyun.odps.io.Text.Comparator

All Implemented Interfaces:

RawComparator, Comparator

Enclosing class:

Text

public static class Text.Comparator
extends WritableComparator

Text 对象的 WritableComparator 自然顺序实现（升序）.

Constructor Summary

Constructors

Constructor and Description
Comparator()
Comparator(Class<? extends WritableComparable> keyClass)

Method Summary

Modifier and Type	Method and Description
int	compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) 基于二进制内容的 Text 对象比较函数.

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()

Comparator

public Comparator(Class<? extends WritableComparable> keyClass)

Method Detail

compare

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

基于二进制内容的 Text 对象比较函数.

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