/*
* #!
* Ontopia DB2TM
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* !#
*/
package net.ontopia.topicmaps.db2tm;
/**
* 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.
*/
public interface ChangelogReaderIF extends TupleReaderIF {
/**
* INTERNAL: Returns the type of change that the current tuple went
* through.
*/
public ChangeType getChangeType();
/**
* INTERNAL: Returns the current order value found in the
* order-column. This information is used so that one can keep track
* of incremental updates.
*/
public String getOrderValue();
}