Package org.apache.hadoop.hbase.util

Class Bytes.LexicographicalComparerHolder

java.lang.Object

org.apache.hadoop.hbase.util.Bytes.LexicographicalComparerHolder

Enclosing class:

Bytes

@Private
static class Bytes.LexicographicalComparerHolder
extends Object

Provides a lexicographical comparer implementation; either a Java implementation or a faster implementation based on Unsafe.

Uses reflection to gracefully fall back to the Java implementation if Unsafe isn't available.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static enum	Bytes.LexicographicalComparerHolder.PureJavaComparer
(package private) static enum	Bytes.LexicographicalComparerHolder.UnsafeComparer

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final Bytes.Comparer<byte[]>	BEST_COMPARER
(package private) static final String	UNSAFE_COMPARER_NAME

Constructor Summary

Constructors

Constructor	Description
LexicographicalComparerHolder()

Method Summary

Modifier and Type	Method	Description
(package private) static Bytes.Comparer<byte[]>	getBestComparer()	Returns the Unsafe-using Comparer, or falls back to the pure-Java implementation if unable to do so.

Methods inherited from class java.lang.Object

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

Field Details

UNSAFE_COMPARER_NAME

static final String UNSAFE_COMPARER_NAME

BEST_COMPARER

static final Bytes.Comparer<byte[]> BEST_COMPARER

Constructor Details

LexicographicalComparerHolder

LexicographicalComparerHolder()

Method Details

getBestComparer

static Bytes.Comparer<byte[]> getBestComparer()

Returns the Unsafe-using Comparer, or falls back to the pure-Java implementation if unable to do so.