Package org.apache.cassandra.utils

Class FastByteOperations.UnsafeOperations

java.lang.Object

org.apache.cassandra.utils.FastByteOperations.UnsafeOperations

All Implemented Interfaces:

FastByteOperations.ByteOperations

Enclosing class:

FastByteOperations

public static final class FastByteOperations.UnsafeOperations
extends java.lang.Object
implements FastByteOperations.ByteOperations

Constructor Summary

Constructors

Constructor	Description
UnsafeOperations()

Method Summary

Modifier and Type	Method	Description
int	compare(byte[] buffer1, int offset1, int length1, byte[] buffer2, int offset2, int length2)
int	compare(java.nio.ByteBuffer buffer1, byte[] buffer2, int offset2, int length2)
int	compare(java.nio.ByteBuffer buffer1, int position1, int length1, byte[] buffer2, int offset2, int length2)
int	compare(java.nio.ByteBuffer buffer1, java.nio.ByteBuffer buffer2)
static int	compareTo(java.lang.Object buffer1, long memoryOffset1, int length1, java.lang.Object buffer2, long memoryOffset2, int length2)	Lexicographically compare two arrays.
static int	compareTo(java.lang.Object buffer1, long offset1, int length1, java.nio.ByteBuffer buffer)
static int	compareTo(java.nio.ByteBuffer buffer1, java.nio.ByteBuffer buffer2)
void	copy(byte[] src, int srcPosition, byte[] trg, int trgPosition, int length)
void	copy(byte[] src, int srcPosition, java.nio.ByteBuffer trg, int trgPosition, int length)
static void	copy(java.lang.Object src, long srcOffset, byte[] trg, int trgPosition, int length)
static void	copy(java.lang.Object src, long srcOffset, java.lang.Object dst, long dstOffset, long length)
static void	copy(java.lang.Object src, long srcOffset, java.nio.ByteBuffer trgBuf, int trgPosition, int length)
void	copy(java.nio.ByteBuffer src, int srcPosition, byte[] trg, int trgPosition, int length)
void	copy(java.nio.ByteBuffer srcBuf, int srcPosition, java.nio.ByteBuffer trgBuf, int trgPosition, int length)

Methods inherited from class java.lang.Object

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

Constructor Detail

UnsafeOperations

public UnsafeOperations()

Method Detail

compare

public int compare(byte[] buffer1,
                   int offset1,
                   int length1,
                   byte[] buffer2,
                   int offset2,
                   int length2)

Specified by:

compare in interface FastByteOperations.ByteOperations

compare

public int compare(java.nio.ByteBuffer buffer1,
                   byte[] buffer2,
                   int offset2,
                   int length2)

Specified by:

compare in interface FastByteOperations.ByteOperations

compare

public int compare(java.nio.ByteBuffer buffer1,
                   int position1,
                   int length1,
                   byte[] buffer2,
                   int offset2,
                   int length2)

Specified by:

compare in interface FastByteOperations.ByteOperations

compare

public int compare(java.nio.ByteBuffer buffer1,
                   java.nio.ByteBuffer buffer2)

Specified by:

compare in interface FastByteOperations.ByteOperations

copy

public void copy(byte[] src,
                 int srcPosition,
                 byte[] trg,
                 int trgPosition,
                 int length)

Specified by:

copy in interface FastByteOperations.ByteOperations

copy

public void copy(java.nio.ByteBuffer src,
                 int srcPosition,
                 byte[] trg,
                 int trgPosition,
                 int length)

Specified by:

copy in interface FastByteOperations.ByteOperations

copy

public void copy(byte[] src,
                 int srcPosition,
                 java.nio.ByteBuffer trg,
                 int trgPosition,
                 int length)

Specified by:

copy in interface FastByteOperations.ByteOperations

copy

public void copy(java.nio.ByteBuffer srcBuf,
                 int srcPosition,
                 java.nio.ByteBuffer trgBuf,
                 int trgPosition,
                 int length)

Specified by:

copy in interface FastByteOperations.ByteOperations

copy

public static void copy(java.lang.Object src,
                        long srcOffset,
                        java.nio.ByteBuffer trgBuf,
                        int trgPosition,
                        int length)

copy

public static void copy(java.lang.Object src,
                        long srcOffset,
                        byte[] trg,
                        int trgPosition,
                        int length)

copy

public static void copy(java.lang.Object src,
                        long srcOffset,
                        java.lang.Object dst,
                        long dstOffset,
                        long length)

compareTo

@Inline
public static int compareTo(java.nio.ByteBuffer buffer1,
                            java.nio.ByteBuffer buffer2)

compareTo

@Inline
public static int compareTo(java.lang.Object buffer1,
                            long offset1,
                            int length1,
                            java.nio.ByteBuffer buffer)

compareTo

@Inline
public static int compareTo(java.lang.Object buffer1,
                            long memoryOffset1,
                            int length1,
                            java.lang.Object buffer2,
                            long memoryOffset2,
                            int length2)

Lexicographically compare two arrays.

Parameters:

buffer1 - left operand: a byte[] or null

buffer2 - right operand: a byte[] or null

memoryOffset1 - Where to start comparing in the left buffer (pure memory address if buffer1 is null, or relative otherwise)

memoryOffset2 - Where to start comparing in the right buffer (pure memory address if buffer1 is null, or relative otherwise)

length1 - How much to compare from the left buffer

length2 - How much to compare from the right buffer

Returns:

0 if equal, < 0 if left is less than right, etc.