org.lacibus.triplesource

Class TransactionsStatus

java.lang.Object

org.lacibus.triplesource.TransactionsStatus

All Implemented Interfaces:

java.io.Serializable

public class TransactionsStatus
extends java.lang.Object
implements java.io.Serializable

A record of transactions that have been completed for a source.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TransactionsStatus(java.util.List<java.lang.Long> completedTransactionSequenceNumbers) Construct a new transactions status given a list of completed transactions

Method Summary

Modifier and Type	Method and Description
TransactionsStatus	getClone()
long	getHighestCompleted()
java.util.List<java.lang.Long>	getTransactionSequenceNumbers() Get a list of the sequence numbers of completed transactions, starting with one before which all transactions have completed.
boolean	isCompleted(long seq) Determine whether the transaction with a given sequence number has been completed.
void	noteCompleted(long seq) Note a transaction is completed.
void	recalcAllCompletedBefore(long highestCompleted) Update the list of completed transactions and recalculate the sequence number such that all transactions with lower sequence numbers have been completed, given a sequence number such that it and all transactions with lower sequence numbers have been completed.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionsStatus

public TransactionsStatus(java.util.List<java.lang.Long> completedTransactionSequenceNumbers)

Construct a new transactions status given a list of completed transactions

Parameters:

completedTransactionSequenceNumbers - a list of sequence numbers of completed transactions such that all transactions before the first one listed have been completed.

Method Detail

getClone

public TransactionsStatus getClone()

Returns:

an identical copy

isCompleted

public boolean isCompleted(long seq)

Determine whether the transaction with a given sequence number has been completed.

Parameters:

seq - the sequence number of the transaction whose completion is to be checked

Returns:

true if that transaction has been completed, false otherwise.

getHighestCompleted

public long getHighestCompleted()

Returns:

the sequence number of the highest completed transaction, or the lowest Long number if none have been completed.

getTransactionSequenceNumbers

public java.util.List<java.lang.Long> getTransactionSequenceNumbers()

Get a list of the sequence numbers of completed transactions, starting with one before which all transactions have completed.

Returns:

a list of the sequence numbers of transactions starting with one before which all transactions have completed and then listing sequence numbers of completed transactions.

recalcAllCompletedBefore

public void recalcAllCompletedBefore(long highestCompleted)

Update the list of completed transactions and recalculate the sequence number such that all transactions with lower sequence numbers have been completed, given a sequence number such that it and all transactions with lower sequence numbers have been completed.

Parameters:

seq - a sequence number such that it and all transactions with lower sequence numbers have been completed

noteCompleted

public void noteCompleted(long seq)

Note a transaction is completed. If the transaction is already noted as complete, do nothing.

Parameters:

seq - the sequence number of a completed transaction