org.apache.hadoop.io
Class MD5Hash.Comparator

java.lang.Object
  extended by org.apache.hadoop.io.WritableComparator
      extended by org.apache.hadoop.io.MD5Hash.Comparator
All Implemented Interfaces:
Comparator, RawComparator
Enclosing class:
MD5Hash

public static class MD5Hash.Comparator
extends WritableComparator

A WritableComparator optimized for MD5Hash keys.


Constructor Summary
MD5Hash.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

MD5Hash.Comparator

public MD5Hash.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