| /* |
| * 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.cris; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.concurrent.locks.Lock; |
| import org.apache.clerezza.platform.graphprovider.content.ContentGraphProvider; |
| import org.apache.clerezza.rdf.core.NonLiteral; |
| import org.apache.clerezza.rdf.core.UriRef; |
| import org.apache.clerezza.rdf.core.access.LockableMGraph; |
| import org.apache.clerezza.rdf.core.access.NoSuchEntityException; |
| import org.apache.clerezza.rdf.core.access.TcManager; |
| import org.apache.clerezza.rdf.cris.Condition; |
| import org.apache.clerezza.rdf.cris.FacetCollector; |
| import org.apache.clerezza.rdf.cris.GraphIndexer; |
| import org.apache.clerezza.rdf.cris.IndexDefinitionManager; |
| import org.apache.clerezza.rdf.cris.ResourceFinder; |
| import org.apache.clerezza.rdf.cris.SortSpecification; |
| import org.apache.clerezza.rdf.cris.VirtualProperty; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.Service; |
| import org.apache.lucene.queryparser.classic.ParseException; |
| import org.apache.lucene.store.FSDirectory; |
| import org.osgi.service.component.ComponentContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Service to index and find resources from the content graph. |
| * |
| * @author tio |
| */ |
| @Component(metatype=true) |
| @Service(IndexService.class) |
| public class IndexService extends ResourceFinder { |
| |
| @Property(intValue=0, label="The delay in minutes until the first index optimization is invoked.", |
| description="This allows to set the time of the first invocation. 0 Is the lowest acceptable value and means run instantly.") |
| static final String OPTIMIZE_DELAY = "org.apache.clerezza.platform.cris.optimizedelay"; |
| |
| @Property(intValue=0, label="The period in minutes between index optimizations.", |
| description="When a new value is set, the first invocation will happen after the specified delay and the old schedule will be canceled instantly. The minimum acceptable value is 1 (min). A value of 0 turns off optimizations.") |
| static final String OPTIMIZE_PERIOD = "org.apache.clerezza.platform.cris.optimizeperiod"; |
| |
| private final Logger logger = LoggerFactory.getLogger(getClass()); |
| |
| IndexDefinitionManager indexDefinitionManager = null; |
| |
| GraphIndexer graphIndexer = null; |
| |
| @Reference |
| ContentGraphProvider cgProvider; |
| |
| @Reference |
| TcManager tcManager; |
| |
| UriRef definitionGraphUri = new UriRef("http://zz.localhost/cris.definitions.graph"); |
| |
| LockableMGraph definitionGraph = null; |
| |
| Integer optimizePeriod = 0; |
| Integer optimizeDelay = 0; |
| |
| protected void activate(ComponentContext context) { |
| |
| optimizePeriod = (Integer) context.getProperties().get(OPTIMIZE_PERIOD); |
| optimizeDelay = (Integer) context.getProperties().get(OPTIMIZE_DELAY); |
| if(optimizeDelay == null || optimizeDelay < 0) { |
| optimizeDelay = 0; |
| } |
| |
| try { |
| definitionGraph = tcManager.getMGraph(definitionGraphUri); |
| } catch (NoSuchEntityException ex) { |
| definitionGraph = tcManager.createMGraph(definitionGraphUri); |
| } |
| File luceneIndexDir = context.getBundleContext().getDataFile("lucene-index"); |
| boolean createNewIndex = luceneIndexDir.exists(); |
| logger.info("Create new index: {}", !createNewIndex); |
| |
| indexDefinitionManager = new IndexDefinitionManager(definitionGraph); |
| try { |
| graphIndexer = new GraphIndexer(definitionGraph, cgProvider.getContentGraph(), |
| FSDirectory.open(luceneIndexDir), !createNewIndex); |
| if(optimizePeriod != null && optimizePeriod >= 1) { |
| long period = optimizePeriod * 60000; |
| long delay = optimizeDelay * 60000; |
| logger.info("Scheduling optimizations with delay {} min and period {} min", delay, period); |
| graphIndexer.scheduleIndexOptimizations(delay, period); |
| } |
| } catch (IOException ex) { |
| logger.error("Could not open lucene index directory."); |
| throw new IllegalStateException(ex); |
| } |
| } |
| |
| protected void deactivate(ComponentContext context) { |
| if(optimizePeriod >= 1) { |
| graphIndexer.terminateIndexOptimizationSchedule(); |
| } |
| optimizeDelay = 0; |
| optimizePeriod = 0; |
| graphIndexer.closeLuceneIndex(); |
| graphIndexer = null; |
| |
| } |
| |
| @Override |
| public List<NonLiteral> findResources(List<? extends Condition> conditions, |
| SortSpecification sortSpecification, FacetCollector... facetCollectors) { |
| try { |
| return graphIndexer.findResources(conditions, sortSpecification, facetCollectors); |
| } catch (ParseException ex) { |
| throw new RuntimeException(ex.getMessage()); |
| } |
| } |
| |
| @Override |
| public List<NonLiteral> findResources(List<? extends Condition> conditions, |
| FacetCollector... facetCollectors) { |
| try { |
| return graphIndexer.findResources(conditions, facetCollectors); |
| } catch (ParseException ex) { |
| throw new RuntimeException(ex.getMessage()); |
| } |
| } |
| |
| @Override |
| public List<NonLiteral> findResources(List<? extends Condition> conditions) { |
| try { |
| return graphIndexer.findResources(conditions); |
| } catch (ParseException ex) { |
| throw new RuntimeException(ex.getMessage()); |
| } |
| } |
| |
| @Override |
| public List<NonLiteral> findResources(UriRef uriRef, String pattern) { |
| try { |
| return graphIndexer.findResources(uriRef, pattern); |
| } catch (ParseException ex) { |
| throw new RuntimeException(ex.getMessage()); |
| } |
| } |
| |
| @Override |
| public List<NonLiteral> findResources(UriRef uriRef, String pattern, |
| boolean escapePattern) { |
| |
| try { |
| return graphIndexer.findResources(uriRef, pattern, escapePattern); |
| } catch (ParseException ex) { |
| throw new RuntimeException(ex.getMessage()); |
| } |
| } |
| |
| @Override |
| public List<NonLiteral> findResources(UriRef uriRef, String pattern, |
| boolean escapePattern, FacetCollector... facetCollectors) { |
| |
| try { |
| return graphIndexer.findResources(uriRef, pattern, escapePattern, facetCollectors); |
| } catch (ParseException ex) { |
| throw new RuntimeException(ex.getMessage()); |
| } |
| } |
| |
| @Override |
| public List<NonLiteral> findResources(UriRef uriRef, String pattern, |
| boolean escapePattern, SortSpecification sortSpecification, |
| FacetCollector... facetCollectors) { |
| |
| try { |
| return graphIndexer.findResources(uriRef, pattern, escapePattern, |
| sortSpecification, facetCollectors); |
| } catch (ParseException ex) { |
| throw new RuntimeException(ex.getMessage()); |
| } |
| } |
| |
| @Override |
| public void reCreateIndex() { |
| graphIndexer.reCreateIndex(); |
| } |
| |
| @Override |
| public void optimizeIndex() { |
| graphIndexer.optimizeIndex(); |
| } |
| |
| public void addDefintion(UriRef propertyType, List<UriRef> predicates) { |
| Lock lock = definitionGraph.getLock().writeLock(); |
| lock.lock(); |
| try { |
| indexDefinitionManager.addDefinition(propertyType, predicates); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| |
| public void addDefinitionVirtual(UriRef propertyType, List<VirtualProperty> predicates) { |
| Lock lock = definitionGraph.getLock().writeLock(); |
| lock.lock(); |
| try { |
| indexDefinitionManager.addDefinitionVirtual(propertyType, predicates); |
| } finally { |
| lock.unlock(); |
| } |
| |
| } |
| |
| public void deleteDefintion(UriRef propertyType) { |
| Lock lock = definitionGraph.getLock().writeLock(); |
| lock.lock(); |
| try { |
| indexDefinitionManager.deleteDefinition(propertyType); |
| } finally { |
| lock.unlock(); |
| } |
| |
| } |
| } |