org.apache.hadoop.io
Class DoubleWritable.Comparator

java.lang.Object
  extended by org.apache.hadoop.io.WritableComparator
      extended by org.apache.hadoop.io.DoubleWritable.Comparator
All Implemented Interfaces:
Comparator, RawComparator
Enclosing class:
DoubleWritable

public static class DoubleWritable.Comparator
extends WritableComparator

A Comparator optimized for DoubleWritable.


Constructor Summary
DoubleWritable.Comparator()
           
 
Method Summary
 int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2)
          Optimization hook.
 
Methods inherited from class org.apache.hadoop.io.WritableComparator
compare, compare, compareBytes, define, get, getKeyClass, hashBytes, hashBytes, newKey, readDouble, readFloat, readInt, readLong, readUnsignedShort, readVInt, readVLong
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface java.util.Comparator
equals
 

Constructor Detail

DoubleWritable.Comparator

public DoubleWritable.Comparator()
Method Detail

compare

public int compare(byte[] b1,
                   int s1,
                   int l1,
                   byte[] b2,
                   int s2,
                   int l2)
Description copied from class: 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).

Specified by:
compare in interface RawComparator
Overrides:
compare in class WritableComparator


Copyright © 2009 The Apache Software Foundation