com.illumon.iris.db.tables.appendable

Interface TableTransactionProcessor

All Known Implementing Classes:

LocalAppendableColumn, LocalAppendableTable

public interface TableTransactionProcessor

Interface for table writing components that support transactions. For purposes of the Deephaven table format, a transaction is an ordered set of rows that must:

1. Be written consecutively
2. Be made visible to readers as a unit, or not at all
3. Be made durable as a unit, or not at all

Method Summary

Modifier and Type	Method and Description
void	abortTransaction() Abort the current pending transaction.
void	finishTransaction() Finish the current pending transaction.
boolean	inTransaction()
void	startTransaction() Begin a new transaction.

Method Detail

inTransaction

boolean inTransaction()

Returns:

True if this processor is currently in a transaction, else false

startTransaction

void startTransaction()

Begin a new transaction. Causes any existing pending transaction to be aborted.

abortTransaction

void abortTransaction()

Abort the current pending transaction.

This should not be called if there is no current transaction.

Throws:

IllegalStateException - If there is no current transaction

finishTransaction

void finishTransaction()

Finish the current pending transaction.

This makes the rows that were part of the transaction eligible to be made visible and durable, but does not in itself make them visible or durable.

This should not be called if there is no current transaction.

Throws:

IllegalStateException - If there is no current transaction