/*
* #%L
* =====================================================
* _____ _ ____ _ _ _ _
* |_ _|_ __ _ _ ___| |_ / __ \| | | | ___ | | | |
* | | | '__| | | / __| __|/ / _` | |_| |/ __|| |_| |
* | | | | | |_| \__ \ |_| | (_| | _ |\__ \| _ |
* |_| |_| \__,_|___/\__|\ \__,_|_| |_||___/|_| |_|
* \____/
*
* =====================================================
*
* Hochschule Hannover
* (University of Applied Sciences and Arts, Hannover)
* Faculty IV, Dept. of Computer Science
* Ricklinger Stadtweg 118, 30459 Hannover, Germany
*
* Email: trust@f4-i.fh-hannover.de
* Website: http://trust.f4.hs-hannover.de/
*
* This file is part of visitmeta-common, version 0.6.0,
* implemented by the Trust@HsH research group at the Hochschule Hannover.
* %%
* Copyright (C) 2012 - 2016 Trust@HsH
* %%
* 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.
* #L%
*/
package de.hshannover.f4.trust.visitmeta.interfaces;
import java.util.List;
/**
* This interface represents the changes of an IF-MAP graph structure between two points in time.
* @author rosso
*
*/
public interface Delta {
/**
* @return
* A List of IdentifierGraphs that represent that delete operations. Since Metadata can only
* be identified by the Identifier it is connected to, the Identifiers of deleted Metadata
* is included in the delete result also. This does not necessarily mean that the respective
* Identifier itself is to be deleted. This is only the case if an Identifier in the delete
* result has no more Metadata connected to it or to any of its links, after the corresponding
* deletes for Metadata have been carried out.
*/
public List<IdentifierGraph> getDeletes();
/**
* @return
* A List of IdentifierGraphs that represent that update operations. Since Metadata can only
* be identified by the Identifier it is connected to, the Identifiers of updated Metadata
* is included in the update result also.
*/
public List<IdentifierGraph> getUpdates();
}