| /* |
| * 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.jena.query; |
| |
| import org.apache.http.client.HttpClient; |
| import org.apache.jena.sparql.core.DatasetGraph ; |
| import org.apache.jena.web.DatasetAdapter ; |
| import org.apache.jena.web.DatasetGraphAccessor ; |
| import org.apache.jena.web.DatasetGraphAccessorBasic ; |
| import org.apache.jena.web.DatasetGraphAccessorHTTP ; |
| |
| /** |
| * Factory which produces dataset accessors |
| * |
| */ |
| public class DatasetAccessorFactory |
| { |
| /** |
| * Create an accessor for a remote HTTP service |
| * @param serviceURI Service URI |
| * @return Accessor |
| */ |
| public static DatasetAccessor createHTTP(String serviceURI) |
| { |
| return adapt(new DatasetGraphAccessorHTTP(serviceURI)) ; |
| } |
| |
| /** |
| * Create an accessor for a remote HTTP service that requires a custom client (e.g. for authentication) |
| * @param serviceURI Service URI |
| * @param client HTTP client |
| * @return Accessor |
| */ |
| public static DatasetAccessor createHTTP(String serviceURI, HttpClient client) |
| { |
| return adapt(new DatasetGraphAccessorHTTP(serviceURI, client)); |
| } |
| |
| /** |
| * Create an accessor for a local dataset |
| * @param dataset Dataset |
| * @return Accessor |
| */ |
| public static DatasetAccessor create(DatasetGraph dataset) |
| { |
| return adapt(new DatasetGraphAccessorBasic(dataset)) ; |
| } |
| |
| /** |
| * Create an accessor for a local dataset |
| * @param dataset Dataset |
| * @return Accessor |
| */ |
| public static DatasetAccessor create(Dataset dataset) |
| { |
| return adapt(new DatasetGraphAccessorBasic(dataset.asDatasetGraph())) ; |
| } |
| |
| /** |
| * Makes an graph level accessor over a local dataset |
| * @param dataset Dataset |
| * @return Accessor |
| */ |
| public static DatasetGraphAccessor make(DatasetGraph dataset) |
| { |
| return new DatasetGraphAccessorBasic(dataset) ; |
| } |
| |
| private static DatasetAccessor adapt(DatasetGraphAccessor dgu) |
| { |
| return new DatasetAdapter(dgu) ; |
| } |
| |
| } |