eu.smartfp7.linkeddatamanager.interfaces.TextSearch.java Source code

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Here is the source code for eu.smartfp7.linkeddatamanager.interfaces.TextSearch.java

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/* 
 * SMART FP7 - Search engine for MultimediA enviRonment generated contenT
 * Webpage: http://smartfp7.eu
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * The Original Code is Copyright (c) 2012-2013 of Atos 
 * All Rights Reserved
 *
 * Contributor(s):
 *  Sinan Yurtsever,
 *  Nines Sanguino, maria.sanguino at atos dot net
 */
package eu.smartfp7.linkeddatamanager.interfaces;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Logger;

import org.json.JSONObject;

import eu.smartfp7.linkeddatamanager.datatypes.Mapping;
import eu.smartfp7.linkeddatamanager.logic.MappingManager;
import eu.smartfp7.linkeddatamanager.logic.TextQueryBuilder;
import eu.smartfp7.linkeddatamanager.logic.SPARQLtoJSON;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.DefaultValue;

@Path("txtSearch")
public class TextSearch {

    private static final Logger logger = Logger.getLogger(TextSearch.class.getCanonicalName());

    //   public void searchURIs(String label, String lang, int page, int pageSize){
    //      
    //   }
    //   
    //   
    //   public void searchTriples(String label, String lang, int page,int pageSize) throws IOException{
    //
    //   }

    /**
     * Finding activities identified by a certain keywords
     * @param label: The keywords to search
     * @param lang: The language of the keywords
     * @param dataset: The dataset in which perform the search. By default DBpedia
     * @return A JSON file format with the found activities
     * @throws IOException
     */
    @GET
    @Path("activities")
    @Produces({ MediaType.APPLICATION_JSON })
    public Response searchActivity(@QueryParam("label") String label,
            @QueryParam("lang") @DefaultValue("en") String lang,
            @QueryParam("dataset") @DefaultValue("dbpedia") String dataset) throws IOException {
        //public void searchActivity(String label, String lang, int page, int pageSize) throws IOException{
        InputStream in = null;
        Mapping m = new MappingManager().getMapping(dataset);
        logger.info("Invoking searchActivity by text-search");
        logger.info("Dataset: " + dataset);
        logger.info("Label: " + label);
        logger.info("Language: " + lang);

        TextQueryBuilder builder = new TextQueryBuilder(m);
        builder.setCriteria(true, false, label, lang);
        String query = builder.printQuery();

        SPARQLtoJSON queryer = new SPARQLtoJSON(m.getEndpoint(), m);
        try {
            JSONObject res = queryer.executeSPARQL(query);
            //System.out.println("Los resultados: " + res);
            in = new ByteArrayInputStream(res.toString().getBytes());
        } catch (Exception e) {
            e.printStackTrace();
            logger.info("Something wrong with the invocation of searchActivity by text-search");
            return Response.serverError().build();
        }
        logger.info("Invoked searchActivity by text-search");
        return Response.ok(in).build();

    }

    /**
     * Finding venues identified by a certain keywords
     * @param label: The keywords to search
     * @param lang: The language of the keywords
     * @param dataset: The dataset in which perform the search. By default DBpedia
     * @return A JSON file format with the found venues
     */
    //public void seachLocation(String label, String lang, int page, int pageSize){
    @GET
    @Path("venues")
    @Produces({ MediaType.APPLICATION_JSON })
    public Response searchLocation(@QueryParam("label") String label,
            @QueryParam("lang") @DefaultValue("en") String lang,
            @QueryParam("dataset") @DefaultValue("dbpedia") String dataset) throws IOException {

        logger.info("Invoking searchLocation by text-search");
        logger.info("Dataset: " + dataset);
        logger.info("Label: " + label);
        logger.info("Language: " + lang);

        InputStream in = null;
        Mapping m = new MappingManager().getMapping(dataset);

        TextQueryBuilder builder = new TextQueryBuilder(m);
        builder.setCriteria(false, true, label, lang);
        String query = builder.printQuery();

        SPARQLtoJSON queryer = new SPARQLtoJSON(m.getEndpoint(), m);
        try {
            JSONObject res = queryer.executeSPARQL(query);
            //System.out.println("Los resultados: " + res);
            in = new ByteArrayInputStream(res.toString().getBytes());
        } catch (Exception e) {
            e.printStackTrace();
            logger.info("Something wrong with the invocation of searchLocation by text-search");
            return Response.serverError().build();
        }
        logger.info("Invoked searchLocation by text-search");
        return Response.ok(in).build();

    }

    public static void main(String args[]) throws IOException {
        TextSearch text_search_demo = new TextSearch();
        text_search_demo.searchActivity("new york", "en", "dbpedia");
    }

}