io.debezium.connector.sqlserver

Class SqlServerStreamingChangeEventSource.ChangeTablePointer

java.lang.Object

io.debezium.pipeline.source.spi.ChangeTableResultSet<SqlServerChangeTable,TxLogPosition>

io.debezium.connector.sqlserver.SqlServerStreamingChangeEventSource.ChangeTablePointer

Enclosing class:

SqlServerStreamingChangeEventSource

private static class SqlServerStreamingChangeEventSource.ChangeTablePointer
extends ChangeTableResultSet<SqlServerChangeTable,TxLogPosition>

The logical representation of a position for the change in the transaction log. During each sourcing cycle it is necessary to query all change tables and then make a total order of changes across all tables.
This class represents an open database cursor over the change table that is able to move the cursor forward and report the LSN for the change to which the cursor now points.

Author:

Jiri Pechanec

Constructor Summary

Constructors

Constructor and Description
ChangeTablePointer(SqlServerChangeTable changeTable, ResultSet resultSet)

Method Summary

Modifier and Type	Method and Description
protected Object	getColumnData(ResultSet resultSet, int columnIndex)
protected TxLogPosition	getNextChangePosition(ResultSet resultSet)
protected int	getOperation(ResultSet resultSet)
protected boolean	isNewTransaction() Check whether TX in currentChangePosition is newer (higher) than TX in previousChangePosition

Methods inherited from class io.debezium.pipeline.source.spi.ChangeTableResultSet

compareTo, getChangePosition, getChangeTable, getData, getOperation, getPreviousChangePosition, isCompleted, isCurrentPositionSmallerThanPreviousPosition, next, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ChangeTablePointer

public ChangeTablePointer(SqlServerChangeTable changeTable,
                          ResultSet resultSet)

Method Detail

getOperation

protected int getOperation(ResultSet resultSet)
                    throws SQLException

Specified by:

getOperation in class ChangeTableResultSet<SqlServerChangeTable,TxLogPosition>

Throws:

SQLException

getColumnData

protected Object getColumnData(ResultSet resultSet,
                               int columnIndex)
                        throws SQLException

Overrides:

getColumnData in class ChangeTableResultSet<SqlServerChangeTable,TxLogPosition>

Throws:

SQLException

getNextChangePosition

protected TxLogPosition getNextChangePosition(ResultSet resultSet)
                                       throws SQLException

Specified by:

getNextChangePosition in class ChangeTableResultSet<SqlServerChangeTable,TxLogPosition>

Throws:

SQLException

isNewTransaction

protected boolean isNewTransaction()
                            throws SQLException

Check whether TX in currentChangePosition is newer (higher) than TX in previousChangePosition

Returns:

true <=> TX in currentChangePosition > TX in previousChangePosition

Throws:

SQLException