org.apache.hadoop.util

类 UTF8ByteArrayUtils

java.lang.Object

org.apache.hadoop.util.UTF8ByteArrayUtils

public class UTF8ByteArrayUtils
extends Object

构造器概要

构造器

构造器和说明
UTF8ByteArrayUtils()

方法概要

方法

限定符和类型	方法和说明
static int	findByte(byte[] utf, int start, int end, byte b) Find the first occurrence of the given byte b in a UTF-8 encoded string
static int	findBytes(byte[] utf, int start, int end, byte[] b) Find the first occurrence of the given bytes b in a UTF-8 encoded string
static int	findNthByte(byte[] utf, byte b, int n) Find the nth occurrence of the given byte b in a UTF-8 encoded string
static int	findNthByte(byte[] utf, int start, int length, byte b, int n) Find the nth occurrence of the given byte b in a UTF-8 encoded string

从类继承的方法 java.lang.Object

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

构造器详细资料

UTF8ByteArrayUtils

public UTF8ByteArrayUtils()

方法详细资料

findByte

public static int findByte(byte[] utf,
           int start,
           int end,
           byte b)

Find the first occurrence of the given byte b in a UTF-8 encoded string

参数:

utf - a byte array containing a UTF-8 encoded string

start - starting offset

end - ending position

b - the byte to find

返回:

position that first byte occures otherwise -1

findBytes

public static int findBytes(byte[] utf,
            int start,
            int end,
            byte[] b)

Find the first occurrence of the given bytes b in a UTF-8 encoded string

参数:

utf - a byte array containing a UTF-8 encoded string

start - starting offset

end - ending position

b - the bytes to find

返回:

position that first byte occures otherwise -1

findNthByte

public static int findNthByte(byte[] utf,
              int start,
              int length,
              byte b,
              int n)

Find the nth occurrence of the given byte b in a UTF-8 encoded string

参数:

utf - a byte array containing a UTF-8 encoded string

start - starting offset

length - the length of byte array

b - the byte to find

n - the desired occurrence of the given byte

返回:

position that nth occurrence of the given byte if exists; otherwise -1

findNthByte

public static int findNthByte(byte[] utf,
              byte b,
              int n)

Find the nth occurrence of the given byte b in a UTF-8 encoded string

参数:

utf - a byte array containing a UTF-8 encoded string

b - the byte to find

n - the desired occurrence of the given byte

返回:

position that nth occurrence of the given byte if exists; otherwise -1