| /** |
| * 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.tdb; |
| |
| import java.io.* ; |
| |
| import org.apache.jena.atlas.io.IO ; |
| import org.apache.jena.atlas.logging.Log ; |
| import org.apache.jena.query.Dataset ; |
| import org.apache.jena.query.TxnType; |
| import org.apache.jena.riot.Lang ; |
| import org.apache.jena.riot.RDFDataMgr ; |
| import org.apache.jena.tdb.base.file.Location ; |
| import org.apache.jena.tdb.transaction.DatasetGraphTxn ; |
| |
| /** |
| * Backup a database. |
| */ |
| |
| public class TDBBackup |
| { |
| public static void backup(Location location, String backupfile) |
| { |
| try(OutputStream out = new BufferedOutputStream(new FileOutputStream(backupfile))) { |
| backup(location, out) ; |
| } |
| catch (FileNotFoundException e) |
| { |
| Log.warn(TDBBackup.class, "File not found: "+backupfile) ; |
| throw new TDBException("File not found: "+backupfile) ; |
| } |
| catch (IOException e) |
| { IO.exception(e) ; } |
| |
| } |
| |
| public static void backup(Location location, OutputStream backupfile) |
| { |
| Dataset ds = TDBFactory.createDataset(location) ; |
| StoreConnection sConn = StoreConnection.make(location) ; |
| DatasetGraphTxn dsg = sConn.begin(TxnType.READ, "backup") ; |
| RDFDataMgr.write(backupfile, dsg, Lang.NQUADS) ; |
| dsg.end(); |
| } |
| } |
| |