org.springframework.data.redis.util

Class ByteUtils

java.lang.Object

org.springframework.data.redis.util.ByteUtils

public final class ByteUtils
extends Object

Some handy methods for dealing with byte arrays.

Since:

1.7

Author:

Christoph Strobl, Mark Paluch

Method Summary

Modifier and Type	Method and Description
static byte[]	concat(byte[] arg1, byte[] arg2)
static byte[]	concatAll(byte[]... args)
static int	indexOf(byte[] haystack, byte needle) Searches the specified array of bytes for the specified value.
static byte[][]	mergeArrays(byte[] firstArray, byte[]... additionalArrays) Merge multiple byte arrays into one array
static byte[][]	split(byte[] source, int c)
static boolean	startsWith(byte[] haystack, byte[] prefix) Tests if the haystack starts with the given prefix.
static boolean	startsWith(byte[] haystack, byte[] prefix, int offset) Tests if the haystack beginning at the specified offset starts with the given prefix.

Methods inherited from class java.lang.Object

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

Method Detail

concat

public static byte[] concat(byte[] arg1,
                            byte[] arg2)

concatAll

public static byte[] concatAll(byte[]... args)

split

public static byte[][] split(byte[] source,
                             int c)

mergeArrays

public static byte[][] mergeArrays(byte[] firstArray,
                                   byte[]... additionalArrays)

Merge multiple byte arrays into one array

Parameters:

firstArray - must not be null

additionalArrays - must not be null

Returns:

startsWith

public static boolean startsWith(byte[] haystack,
                                 byte[] prefix)

Tests if the haystack starts with the given prefix.

Parameters:

haystack - the source to scan.

prefix - the prefix to find.

Returns:

true if haystack at position offset starts with prefix.

Since:

1.8.10

See Also:

startsWith(byte[], byte[], int)

startsWith

public static boolean startsWith(byte[] haystack,
                                 byte[] prefix,
                                 int offset)

Tests if the haystack beginning at the specified offset starts with the given prefix.

Parameters:

haystack - the source to scan.

prefix - the prefix to find.

offset - the offset to start at.

Returns:

true if haystack at position offset starts with prefix.

Since:

1.8.10

indexOf

public static int indexOf(byte[] haystack,
                          byte needle)

Searches the specified array of bytes for the specified value. Returns the index of the first matching value in the haystacks natural order or -1 of needle could not be found.

Parameters:

haystack - the source to scan.

needle - the value to scan for.

Returns:

index of first appearance, or -1 if not found.

Since:

1.8.10