io.debezium.connector.sqlserver

Class Lsn

java.lang.Object

io.debezium.connector.sqlserver.Lsn

All Implemented Interfaces:

Nullable, Comparable<Lsn>

public class Lsn
extends Object
implements Comparable<Lsn>, Nullable

A logical representation of SQL Server LSN (log sequence number) position. When LSN is not available it is replaced with NULL constant.

Author:

Jiri Pechanec

Field Summary

Fields

Modifier and Type	Field and Description
private byte[]	binary
static Lsn	NULL
private static String	NULL_STRING
private String	string
private int[]	unsignedBinary

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Lsn(byte[] binary)

Method Summary

Modifier and Type	Method and Description
int	compareTo(Lsn o) Enables ordering of LSNs.
boolean	equals(Object obj)
byte[]	getBinary()
private int[]	getUnsignedBinary()
int	hashCode()
boolean	isAvailable()
boolean	isBetween(Lsn from, Lsn to) Verifies whether the LSN falls into a LSN interval
String	toString()
static Lsn	valueOf(byte[] lsnBinary)
static Lsn	valueOf(String lsnString)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

NULL_STRING

private static final String NULL_STRING

See Also:

Constant Field Values

NULL

public static final Lsn NULL

binary

private final byte[] binary

unsignedBinary

private int[] unsignedBinary

string

private String string

Constructor Detail

Lsn

private Lsn(byte[] binary)

Method Detail

getBinary

public byte[] getBinary()

Returns:

binary representation of the stored LSN

isAvailable

public boolean isAvailable()

Specified by:

isAvailable in interface Nullable

Returns:

true if this is a real LSN or false it it is NULL

getUnsignedBinary

private int[] getUnsignedBinary()

toString

public String toString()

Overrides:

toString in class Object

Returns:

textual representation of the stored LSN

valueOf

public static Lsn valueOf(String lsnString)

Parameters:

lsnString - - textual representation of Lsn

Returns:

LSN converted from its textual representation

valueOf

public static Lsn valueOf(byte[] lsnBinary)

Parameters:

lsnBinary - - binary representation of Lsn

Returns:

LSN converted from its binary representation

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

compareTo

public int compareTo(Lsn o)

Enables ordering of LSNs. The NULL LSN is always the smallest one.

Specified by:

compareTo in interface Comparable<Lsn>

isBetween

public boolean isBetween(Lsn from,
                         Lsn to)

Verifies whether the LSN falls into a LSN interval

Parameters:

from - start of the interval (included)

to - end of the interval (excluded)

Returns:

true if the LSN falls into the interval