| /** |
| * 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.atlas.repository.graphdb; |
| |
| /** |
| * Represents a graph database. |
| * |
| * @param <V> vertex class used by the graph database |
| * @param <E> edge class used by the graph database |
| */ |
| public interface GraphDatabase<V, E> { |
| |
| /** |
| * Returns whether the graph has been loaded. |
| * @return |
| */ |
| boolean isGraphLoaded(); |
| |
| /** |
| * Gets the graph, loading it if it has not been loaded already. |
| * @return |
| */ |
| AtlasGraph<V, E> getGraph(); |
| |
| /** |
| * Sets things up so that getGraph() will return a graph that can be used for running |
| * tests. |
| */ |
| void initializeTestGraph(); |
| |
| /** |
| * Removes the test graph that was created. |
| */ |
| void cleanup(); |
| } |