D-Net

package eu.dnetlib.data.mapreduce.hbase.lodImport.utils;

import com.hp.hpl.jena.query.QueryExecution;

import com.hp.hpl.jena.query.QueryExecutionFactory;

import com.hp.hpl.jena.query.QuerySolution;

import com.hp.hpl.jena.query.ResultSet;

import com.hp.hpl.jena.rdf.model.Model;

import com.hp.hpl.jena.rdf.model.ModelFactory;

/**

 * Method: getCoutryURI

 * 

 * @author Giorgos Alexiou

 *

 */

public class MapCountries {

/**

 * This Method takes ISO ISO_3166_1 codes for Countries as input and returns the respective URI from dbpedia.org as output.

 * For example iso639_3 for Germany is "DE" and the respective URI from dbpedia.org is <http://dbpedia.org/resource/Germany>

 * 

 * @param iso_3166_1_Code

 * @return country URI <String>

 */

	public static String getCountryURI(String iso_3166_1_Code){

		iso_3166_1_Code = iso_3166_1_Code.trim();

		Model dbpediaCountries =  ModelFactory.createDefaultModel();

		dbpediaCountries.read("resources/rdfdata/dbpedia_Countries.rdf", "RDF/XML");

		String isoURI = "http://dbpedia.org/resource/ISO_3166-1:"+iso_3166_1_Code;

		String query = "PREFIX dbpedia-owl:<http://dbpedia.org/ontology/> select distinct ?s ?r where {<"+isoURI+"> dbpedia-owl:wikiPageRedirects ?s}";

//		System.out.println(query);

		QueryExecution queryExecution = QueryExecutionFactory.create(query,dbpediaCountries);

		ResultSet resultSet = queryExecution.execSelect();

		String countryURI="";

		while (resultSet.hasNext()) {

			 QuerySolution qs = resultSet.next();

			 String uriString = qs.getResource("s").toString().trim();

			 countryURI=uriString;

		}

		return countryURI;	

	}

}