code: package it.unibz.inf.ontop.owlapi;
  
  /*
   * #%L
   * ontop-test
   * %%
   * Copyright (C) 2009 - 2014 Free University of Bozen-Bolzano
   * %%
   * Licensed 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.
   * #L%
   */
  
  import org.junit.*;
  
  /***
   * A simple test that check if the system is able to handle Mappings for
   * classes/roles and attributes even if there are no URI templates. i.e., the
   * database stores URI's directly.
   * 
   * We are going to create an H2 DB, the .sql file is fixed. We will map directly
   * there and then query on top.
   */
  public class SPARQLRegExTest extends AbstractOWLAPITest {
  
  	@BeforeClass
  	public static void setUp() throws Exception {
  		initOBDA("/regex/sparql-regex-test.sql",
  				"/regex/sparql-regex-test.obda",
  				"/regex/sparql-regex-test.owl");
  	}
  
  	@AfterClass
  	public static void tearDown() throws Exception {
  		release();
  	}
  
  	@Test
  	public void testIssue72() throws Exception {
  		String query = "SELECT DISTINCT * WHERE {\n" +
  				"?s a <http://www.opendatasemanticuplift.org/vocab/class/Data_Centre_List_Five> .\n" +
  				"?s ?p ?lit .\n" +
  				"FILTER regex(?lit, \"^(?i)Zzdl2*(?-i)\") .\n" +
  				"?s <http://www.w3.org/2000/01/rdf-schema#label> ?label .\n" +
  				"}";
  		checkNumberOfReturnedValues(query, 0);
  	}
  
  	@Test
  	public void testSingleColum2() throws Exception {
  		String query = "PREFIX : <http://www.ontop.org/> " +
  				"SELECT ?x ?name WHERE {?x :name ?name . FILTER regex(?name, \"ABA\")}";
  		checkNumberOfReturnedValues(query, 2);
  	}
  
  	@Test
  	public void testRegexOnURIStr() throws Exception {
  		String query = "PREFIX : <http://www.ontop.org/> S" +
  				"ELECT ?x ?name WHERE {?x :name ?name . FILTER regex(str(?x), \"ABA\")}";
  		checkNumberOfReturnedValues(query, 2);
  	}
  
  	// we should not return results when we execute a regex on a uri without the use of str function
  	@Test
  	public void testRegexOnURI() throws Exception {
  		String query = "PREFIX : <http://www.ontop.org/> " +
  				"SELECT ?x ?name WHERE {?x :name ?name . FILTER regex(?x, \"ABA\")}";
  		checkNumberOfReturnedValues(query, 0);
  	}
  }
  