net.ontopia.topicmaps.db2tm
Interface ChangelogReaderIF

All Superinterfaces:

TupleReaderIF

All Known Implementing Classes:

ChangelogReaderWrapper

public interface ChangelogReaderIF
extends TupleReaderIF

INTERNAL: A change log reader is a tuple reader that is used to read a change log relation. For each tuple read it also returns the type of change and an order value that says something about the order in which the change occurred.

Method Summary

ChangeType	getChangeType() INTERNAL: Returns the type of change that the current tuple went through.
String	getOrderValue() INTERNAL: Returns the current order value found in the order-column.

Methods inherited from interface net.ontopia.topicmaps.db2tm.TupleReaderIF

close, readNext

Method Detail

getChangeType

ChangeType getChangeType()

INTERNAL: Returns the type of change that the current tuple went through.

getOrderValue

String getOrderValue()

INTERNAL: Returns the current order value found in the order-column. This information is used so that one can keep track of incremental updates.