| /** |
| * 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.titan.query; |
| |
| import org.apache.atlas.repository.graphdb.AtlasEdge; |
| import org.apache.atlas.repository.graphdb.AtlasGraphQuery.QueryOperator; |
| import org.apache.atlas.repository.graphdb.AtlasVertex; |
| |
| import java.util.Collection; |
| |
| /** |
| * Interfaces that provides a thin wrapper around GraphQuery (used by Titan0) and |
| * TitanGraphQuery (used by Titan 1). |
| * |
| * This abstraction allows TitanGraphQuery to work on any version of Titan. |
| * |
| * @param <V> |
| * @param <E> |
| */ |
| public interface NativeTitanGraphQuery<V, E> { |
| |
| /** |
| * Executes the graph query. |
| * @return |
| */ |
| Iterable<AtlasVertex<V, E>> vertices(); |
| |
| /** |
| * Executes the graph query. |
| * @return |
| */ |
| Iterable<AtlasEdge<V, E>> edges(); |
| |
| /** |
| * Executes graph query |
| * @param limit Max vertices to return |
| * @return |
| */ |
| Iterable<AtlasVertex<V, E>> vertices(int limit); |
| |
| /** |
| * Executes graph query |
| * @param offset Starting offset |
| * @param limit Max vertices to return |
| * @return |
| */ |
| Iterable<AtlasVertex<V, E>> vertices(int offset, int limit); |
| |
| |
| /** |
| * Adds an in condition to the query. |
| * |
| * @param propertyName |
| * @param values |
| */ |
| void in(String propertyName, Collection<?> values); |
| |
| /** |
| * Adds a has condition to the query. |
| * |
| * @param propertyName |
| * @param op |
| * @param value |
| */ |
| void has(String propertyName, QueryOperator op, Object value); |
| } |