| /******************************************************************************* |
| * Copyright (c) 2019 Aston University. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * This Source Code may also be made available under the following Secondary |
| * Licenses when the conditions for such availability set forth in the Eclipse |
| * Public License, v. 2.0 are satisfied: GNU General Public License, version 3. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR GPL-3.0 |
| * |
| * Contributors: |
| * Antonio Garcia-Dominguez - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.hawk.core.graph.timeaware; |
| |
| import java.util.List; |
| |
| import org.eclipse.hawk.core.graph.IGraphNode; |
| import org.eclipse.hawk.core.graph.IGraphNodeIndex; |
| |
| /** |
| * Variant of a node index which can travel in time and do queries over the |
| * timeline of a node. |
| */ |
| public interface ITimeAwareGraphNodeIndex extends IGraphNodeIndex { |
| |
| /** |
| * Returns a new version of this index, which is forced to answer queries in a |
| * certain timepoint rather than the current timepoint of the graph. |
| */ |
| ITimeAwareGraphNodeIndex travelInTime(long timepoint); |
| |
| /** |
| * Returns all the timepoints of a node which have a certain value |
| * associated with a query, from latest to earliest. |
| */ |
| List<Long> getVersions(ITimeAwareGraphNode n, String key, Object exactValue, long startTimepointIncluded); |
| |
| /** |
| * Returns the earliest timepoint since the current timepoint of <code>taNode</code> |
| * for which the key was equal to the specified value, or <code>null</code> if it |
| * does not exist. |
| */ |
| Long getEarliestVersionSince(ITimeAwareGraphNode taNode, String key, Object exactValue); |
| |
| /** |
| * Annotates this particular node at this moment in time using the annotation |
| * name {@code name}. This allows this instant of the node to be easily |
| * retrieved with the {@code xAnnotated} operations. |
| * |
| * @param name Name of the annotation to apply. |
| */ |
| void annotate(IGraphNode elementNode, String name); |
| |
| } |