| /* |
| * 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.clerezza.platform.graphprovider.content; |
| |
| import org.apache.clerezza.platform.Constants; |
| import org.apache.clerezza.rdf.core.MGraph; |
| import org.apache.clerezza.rdf.core.UriRef; |
| import org.apache.clerezza.rdf.core.access.EntityAlreadyExistsException; |
| import org.apache.clerezza.rdf.core.access.NoSuchEntityException; |
| import org.apache.clerezza.rdf.core.access.TcManager; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A utility class to rename used in snapshot versions to the naming in the first released version |
| * |
| * @author reto |
| */ |
| public class GraphNameTransitioner { |
| |
| private final static Logger logger = LoggerFactory.getLogger(GraphNameTransitioner.class); |
| |
| /** |
| * a hack to prevent double execution on the same start up process |
| */ |
| private static boolean alreadyExecuted = false; |
| |
| synchronized static public void renameGraphsWithOldNames(TcManager tcManager) { |
| if (alreadyExecuted) { |
| return; |
| } else { |
| alreadyExecuted = true; |
| } |
| |
| /*try { |
| //just to see that nothing bad happens |
| Thread.sleep(20*1000); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| }*/ |
| |
| final String OLD_SYSTEM_GRAPH_URI_STRING = |
| "http://tpf.localhost/system.graph"; |
| final UriRef OLD_SYSTEM_GRAPH_URI = |
| new UriRef(OLD_SYSTEM_GRAPH_URI_STRING); |
| |
| final String OLD_CONFIG_GRAPH_URI_STRING = |
| "http://tpf.localhost/config.graph"; |
| final UriRef OLD_CONFIG_GRAPH_URI = |
| new UriRef(OLD_CONFIG_GRAPH_URI_STRING); |
| |
| final String OLD_CONTENT_GRAPH_URI_STRING = |
| "http://tpf.localhost/content.graph"; |
| final UriRef OLD_CONTENT_GRAPH_URI = |
| new UriRef(OLD_CONTENT_GRAPH_URI_STRING); |
| |
| renameGraphs(tcManager, OLD_SYSTEM_GRAPH_URI, Constants.SYSTEM_GRAPH_URI); |
| renameGraphs(tcManager, OLD_CONFIG_GRAPH_URI, Constants.CONFIG_GRAPH_URI); |
| renameGraphs(tcManager, OLD_CONTENT_GRAPH_URI, Constants.CONTENT_GRAPH_URI); |
| renameGraphs(tcManager, new UriRef("http://zz.localhost/graph-access.graph"), |
| new UriRef(Constants.URN_LOCAL_INSTANCE+"/graph-access.graph")); |
| |
| } |
| |
| private static void renameGraphs(TcManager tcManager, UriRef oldGraphUri, UriRef graphUri) { |
| try { |
| MGraph oldMGraph = tcManager.getMGraph(oldGraphUri); |
| MGraph newMGraph = tcManager.createMGraph(graphUri); |
| logger.info("renaming "+oldGraphUri+" to "+graphUri); |
| newMGraph.addAll(oldMGraph); |
| tcManager.deleteTripleCollection(oldGraphUri); |
| } catch (NoSuchEntityException ex) { |
| } catch (EntityAlreadyExistsException ex) { |
| logger.warn("could not rename " + oldGraphUri + " to " + |
| graphUri + " because target graph already exists", ex); |
| } |
| } |
| } |