Package com.luciad.fusion.tilestore

Class TLfnTransactionStatus

java.lang.Object

com.luciad.fusion.tilestore.TLfnTransactionStatus

public class TLfnTransactionStatus
extends Object

A representation of the transaction status on the server. A transaction status represents the latest transaction which has been committed on the server. Transactions are useful for tracking commitment of asynchronous write operations on the server, for instance tile addition.

A logical transaction is uniquely identified by two properties:

1. transaction management ID
2. transaction ID

The transaction management ID is normally fixed and only changes in server failure scenarios. If the client has outstanding transactions with a different management ID, it has to discard its transactions and possibly retry them.

The transaction ID is sequential, given a fixed transaction management ID. The transaction status only tracks the highest committed transaction ID, confirming commitment of all transactions with lower transaction ID. In other words, the highest committed transaction ID indicates that all outstanding transactions of the same management ID and a lower or equal transaction ID have been committed.

Since:

10.0

Constructor Summary

Constructors

Constructor	Description
TLfnTransactionStatus(long aTransactionManagementId, long aHighestCommittedTransactionId)	Constructs a new transaction status.

Method Summary

Modifier and Type	Method	Description
long	getHighestCommittedTransactionId()	Gets the highest committed transaction ID.
long	getTransactionManagementId()	Gets the unique transaction management ID.
boolean	isCommitted(long aTransactionId)	Returns whether a specified transaction has been committed in this state.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

TLfnTransactionStatus

public TLfnTransactionStatus(long aTransactionManagementId,
 long aHighestCommittedTransactionId)

Constructs a new transaction status.

Parameters:

aTransactionManagementId - the unique transaction management ID

aHighestCommittedTransactionId - the highest committed transaction ID

Method Details

getTransactionManagementId

public long getTransactionManagementId()

Gets the unique transaction management ID.

Returns:

the unique transaction management ID

getHighestCommittedTransactionId

public long getHighestCommittedTransactionId()

Gets the highest committed transaction ID.

Returns:

the highest committed transaction ID

isCommitted

public boolean isCommitted(long aTransactionId)

Returns whether a specified transaction has been committed in this state.

Parameters:

aTransactionId - the transaction ID

Returns:

true if the transaction with ID aTransactionId has been committed in this state.

toString

public String toString()

Overrides:

toString in class Object