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/* $Id$ */
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.manifoldcf.crawler.interfaces;
import org.apache.manifoldcf.core.interfaces.*;
import java.util.*;
/** This interface describes functionality designed to allow retrieval of existing
* version information from previous crawls. It is part of the IRepositoryConnector API.
*/
public interface IExistingVersions
{
public static final String _rcsid = "@(#)$Id$";
/** Retrieve the primary existing version string given a document identifier.
*@param documentIdentifier is the document identifier.
*@return the document version string, or null if the document was never previously indexed.
*/
public String getIndexedVersionString(String documentIdentifier)
throws ManifoldCFException;
/** Retrieve a component existing version string given a document identifier.
*@param documentIdentifier is the document identifier.
*@param componentIdentifier is the component identifier, if any.
*@return the document version string, or null of the document component was never previously indexed.
*/
public String getIndexedVersionString(String documentIdentifier, String componentIdentifier)
throws ManifoldCFException;
}