brown.tracingplane.atomlayer

Class UnsignedByteBuffer

java.lang.Object

brown.tracingplane.atomlayer.UnsignedByteBuffer

public final class UnsignedByteBuffer
extends java.lang.Object

Adapted from Guava's com.google.common.primitives.UnsignedBytes to provide comparators for unsigned ByteBuffers

Method Summary

Modifier and Type	Method and Description
static int	compare(java.nio.ByteBuffer a, java.nio.ByteBuffer b)
static java.util.Comparator<java.nio.ByteBuffer>	lexicographicalComparator() Returns a comparator that compares two java.nio.ByteBuffers lexicographically.

Methods inherited from class java.lang.Object

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

Method Detail

compare

public static int compare(java.nio.ByteBuffer a,
                          java.nio.ByteBuffer b)

lexicographicalComparator

public static java.util.Comparator<java.nio.ByteBuffer> lexicographicalComparator()

Returns a comparator that compares two java.nio.ByteBuffers lexicographically. That is, it compares, using UnsignedBytes.compare(byte, byte)), the first pair of values that follow any common prefix, or when one array is a prefix of the other, treats the shorter array as the lesser. For example, [] < [0x01] < [0x01, 0x7F] < [0x01, 0x80] < [0x02]. Values are treated as unsigned.

The returned comparator is inconsistent with Object.equals(Object) (since arrays support only identity equality), but it is consistent with Arrays.equals(byte[], byte[]).

Since:

2.0