com.aliyun.odps.mapred.unittest

Class LocalRecordComparator

java.lang.Object

com.aliyun.odps.mapred.unittest.LocalRecordComparator

All Implemented Interfaces:

Comparator<Record>

public class LocalRecordComparator
extends Object
implements Comparator<Record>

RecordComparator 用于对 Record 进行比较.

compare(Record, Record) 比较规则：

1. 比较列数： (o1.size() == o2.size()) ? 0 : ((o1.size() < o2.size()) ? -1 : 1)
2. 如果列数相等，调用每列的 Comparable.compareTo(Object) 依次进行比较

Constructor Summary

Constructors

Constructor and Description
LocalRecordComparator()

Method Summary

Modifier and Type	Method and Description
int	compare(Record o1, Record o2) 比较两个 Record.

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

LocalRecordComparator

public LocalRecordComparator()

Method Detail

compare

public int compare(Record o1,
                   Record o2)

比较两个 Record.

比较规则：

1. 比较列数： (o1.size() == o2.size()) ? 0 : ((o1.size() < o2.size()) ? -1 : 1)
2. 如果列数相等，调用每列的 Comparable.compareTo(Object) 依次进行比较

Specified by:

compare in interface Comparator<Record>

Parameters:

o1 - 记录1

o2 - 记录2

Returns:

比较结果