AbstractJournalOperation (FFMQ Core 4.0.13 API)

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	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 Description

AbstractJournalOperation(long transactionId, byte type)
Constructor

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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