001/** 002 * Copyright (C) 2007 - 2016, Jens Lehmann 003 * 004 * This file is part of DL-Learner. 005 * 006 * DL-Learner is free software; you can redistribute it and/or modify 007 * it under the terms of the GNU General Public License as published by 008 * the Free Software Foundation; either version 3 of the License, or 009 * (at your option) any later version. 010 * 011 * DL-Learner is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 014 * GNU General Public License for more details. 015 * 016 * You should have received a copy of the GNU General Public License 017 * along with this program. If not, see <http://www.gnu.org/licenses/>. 018 */ 019package org.dllearner.kb; 020 021import org.aksw.jena_sparql_api.cache.h2.CacheUtilsH2; 022import org.aksw.jena_sparql_api.core.QueryExecutionFactory; 023import org.aksw.jena_sparql_api.model.QueryExecutionFactoryModel; 024import org.dllearner.core.ComponentAnn; 025 026import org.apache.jena.ontology.OntModel; 027import org.apache.jena.ontology.OntModelSpec; 028import org.apache.jena.rdf.model.Model; 029import org.apache.jena.rdf.model.ModelFactory; 030 031@ComponentAnn(name = "Local Endpoint", shortName = "local_sparql", version = 0.9) 032public class LocalModelBasedSparqlEndpointKS extends SparqlEndpointKS { 033 034 private OntModel model; 035 036 public LocalModelBasedSparqlEndpointKS() {} 037 038 /** 039 * Create new Sparql Endpoint based on Jena Ontology 040 * @param model ontology model 041 */ 042 public LocalModelBasedSparqlEndpointKS(OntModel model) { 043 this.model = model; 044 } 045 046 /** 047 * Create new Sparql Endpoint based on Jena model 048 * @param model rdf model 049 * @param reasoningEnabled whether to use Jena RDFS inferencing 050 */ 051 public LocalModelBasedSparqlEndpointKS(Model model, boolean reasoningEnabled) { 052 this(model, reasoningEnabled ? OntModelSpec.OWL_MEM_RDFS_INF : OntModelSpec.OWL_MEM); 053 } 054 055 /** 056 * Create new Sparql Endpoint based on Jena Model and reasoning spec 057 * @param model rdf model 058 * @param reasoning type of reasoning 059 */ 060 public LocalModelBasedSparqlEndpointKS(Model model, OntModelSpec reasoning) { 061 this.model = ModelFactory.createOntologyModel(reasoning, model); 062 } 063 064 /** 065 * Create new Sparql Endpoint based on Jena Model. No reasoning enabled by default. 066 * @param model rdf model 067 */ 068 public LocalModelBasedSparqlEndpointKS(Model model) { 069 this(model, false); 070 } 071 072 /* (non-Javadoc) 073 * @see org.dllearner.kb.SparqlEndpointKS#buildQueryExecutionFactory() 074 */ 075 @Override 076 protected QueryExecutionFactory buildQueryExecutionFactory() { 077 QueryExecutionFactory qef = new QueryExecutionFactoryModel(model); 078 079 // we are working on an in-memory model, but still should enable caching by default 080 qef = CacheUtilsH2.createQueryExecutionFactory(qef, cacheDir, true, cacheTTL); 081 082 return qef; 083 } 084 085 public OntModel getModel() { 086 return model; 087 } 088 089 @Override 090 public boolean isRemote() { 091 return false; 092 } 093 094 @Override 095 public boolean supportsSPARQL_1_1() { 096 return true; 097 } 098 099 @Override 100 public String toString() { 101 String out = String.format("%-15s %-25s%n", "Endpoint:", "in-memory model"); 102 out += String.format("%-15s %-25s%n", "Profile:", model.getProfile()); 103 return out; 104 } 105}