程序包 com.moilioncircle.redis.replicator.rdb

类 BaseRdbParser

java.lang.Object

com.moilioncircle.redis.replicator.rdb.BaseRdbParser

public class BaseRdbParser
extends Object

从以下版本开始:

2.1.0

作者:

Leon Chen

嵌套类概要

嵌套类

修饰符和类型	类	说明
static class	BaseRdbParser.Len
static class	BaseRdbParser.LenHelper
static class	BaseRdbParser.StringHelper

字段概要

字段

修饰符和类型	字段	说明
protected RedisInputStream	in

构造器概要

构造器

构造器	说明
BaseRdbParser(RedisInputStream in)

方法概要

修饰符和类型	方法	说明
ByteArray	rdbGenericLoadStringObject(int flags)	1.|11xxxxxx|xxxxxxxx| remaining 6bit is 0, then an 8 bit integer follows
double	rdbLoadBinaryDoubleValue()
float	rdbLoadBinaryFloatValue()
double	rdbLoadDoubleValue()
ByteArray	rdbLoadEncodedStringObject()
ByteArray	rdbLoadIntegerObject(int enctype, int flags)
BaseRdbParser.Len	rdbLoadLen()	read bytes 1 or 2 or 5
ByteArray	rdbLoadLzfStringObject(int flags)	|11xxxxxx| remaining 6bit is 3,then lzf compressed string follows
long	rdbLoadMillisecondTime()	"expiry time in ms".
ByteArray	rdbLoadPlainStringObject()
int	rdbLoadTime()	"expiry time in seconds".

从类继承的方法 java.lang.Object

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

字段详细资料

in

protected final RedisInputStream in

构造器详细资料

BaseRdbParser

public BaseRdbParser(RedisInputStream in)

方法详细资料

rdbLoadTime

public int rdbLoadTime()
                throws IOException

"expiry time in seconds". After that, expiry time is read as a 4 byte unsigned int

返回:

seconds

抛出:

IOException - when read timeout

rdbLoadMillisecondTime

public long rdbLoadMillisecondTime()
                            throws IOException

"expiry time in ms". After that, expiry time is read as a 8 byte unsigned long

返回:

millisecond

抛出:

IOException - when read timeout

rdbLoadLen

public BaseRdbParser.Len rdbLoadLen()
                             throws IOException

read bytes 1 or 2 or 5

1. |00xxxxxx| remaining 6 bits represent the length

2. |01xxxxxx|xxxxxxxx| the combined 14 bits represent the length

3. |10xxxxxx|xxxxxxxx|xxxxxxxx|xxxxxxxx|xxxxxxxx| the remaining 6 bits are discarded.Additional 4 bytes represent the length(big endian in version6)

4. |11xxxxxx| the remaining 6 bits are read.and then the next object is encoded in a special format.so we set encoded = true

返回:

tuple(len, encoded)

抛出:

IOException - when read timeout

另请参阅:

rdbLoadIntegerObject(int, int), rdbLoadLzfStringObject(int)

rdbLoadIntegerObject

public ByteArray rdbLoadIntegerObject(int enctype,
                                      int flags)
                               throws IOException

参数:

enctype - 0,1,2

flags - RDB_LOAD_ENC: encoded string.RDB_LOAD_PLAIN | RDB_LOAD_NONE:raw bytes

返回:

ByteArray rdb byte array object

抛出:

IOException - when read timeout

rdbLoadLzfStringObject

public ByteArray rdbLoadLzfStringObject(int flags)
                                 throws IOException

|11xxxxxx| remaining 6bit is 3,then lzf compressed string follows

lzf format

|lzf flag|clen:1 or 2 or 5 bytes|len:1 or 2 or 5 bytes | lzf compressed bytes |

|11xxxxxx|xxxxxxxx|....|xxxxxxxx|xxxxxxxx|....|xxxxxxxx|xxxxxxxx|xxxxxxxx|............xxxxxxxx|

参数:

flags - RDB_LOAD_ENC: encoded string.RDB_LOAD_PLAIN | RDB_LOAD_NONE:raw bytes

返回:

ByteArray rdb byte array object

抛出:

IOException - when read timeout

另请参阅:

rdbLoadLen()

rdbGenericLoadStringObject

public ByteArray rdbGenericLoadStringObject(int flags)
                                     throws IOException

1.|11xxxxxx|xxxxxxxx| remaining 6bit is 0, then an 8 bit integer follows

2.|11xxxxxx|xxxxxxxx|xxxxxxxx| remaining 6bit is 1, then an 16 bit integer follows

3.|11xxxxxx|xxxxxxxx|xxxxxxxx|xxxxxxxx|xxxxxxxx| remaining 6bit is 2, then an 32 bit integer follows

4.|11xxxxxx| remaining 6bit is 3,then lzf compressed string follows

参数:

flags - RDB_LOAD_ENC: encoded string.RDB_LOAD_PLAIN | RDB_LOAD_NONE:raw bytes

返回:

ByteArray rdb byte array object

抛出:

IOException - when read timeout

另请参阅:

rdbLoadIntegerObject(int, int), rdbLoadLzfStringObject(int)

rdbLoadPlainStringObject

public ByteArray rdbLoadPlainStringObject()
                                   throws IOException

返回:

ByteArray rdb object with byte[]

抛出:

IOException - when read timeout

rdbLoadEncodedStringObject

public ByteArray rdbLoadEncodedStringObject()
                                     throws IOException

返回:

ByteArray rdb object with byte[]

抛出:

IOException - when read timeout

rdbLoadDoubleValue

public double rdbLoadDoubleValue()
                          throws IOException

抛出:

IOException

rdbLoadBinaryDoubleValue

public double rdbLoadBinaryDoubleValue()
                                throws IOException

抛出:

IOException

rdbLoadBinaryFloatValue

public float rdbLoadBinaryFloatValue()
                              throws IOException

返回:

single precision float

抛出:

IOException - io exception

从以下版本开始:

2.2.0