org.apache.hadoop.io

类 LongWritable.DecreasingComparator

java.lang.Object

org.apache.hadoop.io.WritableComparator

org.apache.hadoop.io.LongWritable.Comparator

org.apache.hadoop.io.LongWritable.DecreasingComparator

所有已实现的接口:

Comparator, RawComparator

封闭类:

LongWritable

public static class LongWritable.DecreasingComparator
extends LongWritable.Comparator

A decreasing Comparator optimized for LongWritable.

构造器概要

构造器

构造器和说明
LongWritable.DecreasingComparator()

方法概要

方法

限定符和类型	方法和说明
int	compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) Optimization hook.
int	compare(WritableComparable a, WritableComparable b) Compare two WritableComparables.

从类继承的方法 org.apache.hadoop.io.WritableComparator

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

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.util.Comparator

equals

构造器详细资料

LongWritable.DecreasingComparator

public LongWritable.DecreasingComparator()

方法详细资料

compare

public int compare(WritableComparable a,
          WritableComparable b)

从类复制的说明: WritableComparator

Compare two WritableComparables.

The default implementation uses the natural ordering, calling Comparable.compareTo(Object).

覆盖:

compare 在类中 WritableComparator

compare

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

从类复制的说明: WritableComparator

Optimization hook. Override this to make SequenceFile.Sorter's scream.

The default implementation reads the data into two WritableComparables (using Writable.readFields(DataInput), then calls WritableComparator.compare(WritableComparable,WritableComparable).

指定者:

compare 在接口中 RawComparator

覆盖:

compare 在类中 LongWritable.Comparator