org.apache.cassandra.db.commitlog

Class CommitLogDescriptor

java.lang.Object

org.apache.cassandra.db.commitlog.CommitLogDescriptor

public class CommitLogDescriptor
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	current_version Increment this number if there is a changes in the commit log disc layout or MessagingVersion changes.
long	id
static int	VERSION_12
static int	VERSION_20

Constructor Summary

Constructors

Constructor and Description
CommitLogDescriptor(int version, long id)
CommitLogDescriptor(long id)

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	fileName()
static CommitLogDescriptor	fromFileName(java.lang.String name)
int	getMessagingVersion()
int	getVersion()
static boolean	isValid(java.lang.String filename)

Methods inherited from class java.lang.Object

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

Field Detail

VERSION_12

public static final int VERSION_12

See Also:

Constant Field Values

VERSION_20

public static final int VERSION_20

See Also:

Constant Field Values

current_version

public static final int current_version

Increment this number if there is a changes in the commit log disc layout or MessagingVersion changes. Note: make sure to handle getMessagingVersion()

See Also:

Constant Field Values

id

public final long id

Constructor Detail

CommitLogDescriptor

public CommitLogDescriptor(int version,
                   long id)

CommitLogDescriptor

public CommitLogDescriptor(long id)

Method Detail

fromFileName

public static CommitLogDescriptor fromFileName(java.lang.String name)

getMessagingVersion

public int getMessagingVersion()

getVersion

public int getVersion()

fileName

public java.lang.String fileName()

isValid

public static boolean isValid(java.lang.String filename)

Parameters:

filename - the filename to check

Returns:

true if filename could be a commit log based on it's filename