net.timewalker.ffmq4.storage.data.impl.journal

Class AbstractJournalOperation

java.lang.Object

net.timewalker.ffmq4.storage.data.impl.journal.AbstractJournalOperation

Direct Known Subclasses:

AbstractJournalWriteOperation, CommitOperation, StoreExtendOperation

public abstract class AbstractJournalOperation
extends Object

Base class for a Journal operation

Field Summary

Fields

Modifier and Type	Field and Description
static byte	TYPE_COMMIT
static byte	TYPE_DATA_BLOCK_WRITE
static byte	TYPE_META_DATA_BLOCK_WRITE
static byte	TYPE_META_DATA_WRITE
static byte	TYPE_STORE_EXTEND

Constructor Summary

Constructors

Constructor and Description
AbstractJournalOperation(long transactionId, byte type) Constructor

Method Summary

Modifier and Type	Method and Description
long	getTransactionId()
byte	getType()
AbstractJournalOperation	next()
void	setNext(AbstractJournalOperation next)
int	size() The storage size for this operation
String	toString()
protected void	writeTo(JournalFile journalFile) Write the operation to the given journal file

Methods inherited from class java.lang.Object

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

Field Detail

TYPE_DATA_BLOCK_WRITE

public static final byte TYPE_DATA_BLOCK_WRITE

See Also:

Constant Field Values

TYPE_META_DATA_WRITE

public static final byte TYPE_META_DATA_WRITE

See Also:

Constant Field Values

TYPE_META_DATA_BLOCK_WRITE

public static final byte TYPE_META_DATA_BLOCK_WRITE

See Also:

Constant Field Values

TYPE_STORE_EXTEND

public static final byte TYPE_STORE_EXTEND

See Also:

Constant Field Values

TYPE_COMMIT

public static final byte TYPE_COMMIT

See Also:

Constant Field Values

Constructor Detail

AbstractJournalOperation

public AbstractJournalOperation(long transactionId,
                                byte type)

Constructor

Method Detail

getTransactionId

public long getTransactionId()

Returns:

the transactionId

getType

public final byte getType()

Returns:

the type

size

public int size()

The storage size for this operation

writeTo

protected void writeTo(JournalFile journalFile)
                throws JournalException

Write the operation to the given journal file

Parameters:

journalFile - teh journal file

Throws:

JournalException

next

public AbstractJournalOperation next()

setNext

public void setNext(AbstractJournalOperation next)

toString

public String toString()

Overrides:

toString in class Object