it.bz.tis.sasabus.html5.client.SASAbusDBClientImpl.java Source code

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Here is the source code for it.bz.tis.sasabus.html5.client.SASAbusDBClientImpl.java

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/*
SASAbusHTML5 - HTML5 App for SASA bus
    
Copyright (C) 2013 TIS Innovation Park - Bolzano/Bozen - Italy
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
    
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/

package it.bz.tis.sasabus.html5.client;

import it.bz.tis.sasabus.backend.shared.AreaList;
import it.bz.tis.sasabus.backend.shared.BusTripStopList;
import it.bz.tis.sasabus.backend.shared.FreeSlots;
import it.bz.tis.sasabus.backend.shared.NewsList;
import it.bz.tis.sasabus.backend.shared.ParkingInfo;
import it.bz.tis.sasabus.backend.shared.SASAbusBackendUnmarshaller;
import it.bz.tis.sasabus.backend.shared.SASAbusDB;
import it.bz.tis.sasabus.backend.shared.SASAbusDBDataReady;
import it.bz.tis.sasabus.backend.shared.SASAbusDBLastModified;
import it.bz.tis.sasabus.backend.shared.travelplanner.ConRes;
import bz.davide.dmweb.shared.view.AbstractHtmlElementView;
import bz.davide.dmxmljson.unmarshalling.json.gwt.GWTStructure;

import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.jsonp.client.JsonpRequestBuilder;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;

/**
 * @author Davide Montesin <d@vide.bz>
 */
public class SASAbusDBClientImpl implements SASAbusDB {

    public static SASAbusDB singleton = null;

    String serviceBaseUrl;

    public SASAbusDBClientImpl(String serviceBaseUrl) {
        super();
        this.serviceBaseUrl = serviceBaseUrl;
    }

    @Override
    public void loadNews(SASAbusDBDataReady<NewsList> response) {
        this.connect("news?nocache=" + System.currentTimeMillis(), "NewsList", response);
    }

    @Override
    public void loadParkingInfo(String parkingid, SASAbusDBDataReady<ParkingInfo> response) {
        this.connect("parking/getParkingStation?identifier=" + parkingid + "&nocache=" + System.currentTimeMillis(),
                "ParkingInfo", response);
    }

    @Override
    public void loadParkingFreeSlots(String parkingid, SASAbusDBDataReady<FreeSlots> response) {
        this.connect("parkingfreeslots/getNumberOfFreeSlots?identifier=" + parkingid + "&nocache="
                + System.currentTimeMillis(), "FreeSlots", response);
    }

    @Override
    public void lastModified(SASAbusDBDataReady<SASAbusDBLastModified> response) {
        this.connect("sasabusdb/lastModified?nocache=" + System.currentTimeMillis(), "SASAbusDBLastModified",
                response);
    }

    @Override
    public void listBusAreasLinesStopsStations(final SASAbusDBDataReady<AreaList> response) {

        SASAbusDBClientImpl.this.connect("sasabusdb/listBusAreasLinesStopsStations", "AreaList", response);

    }

    @Override
    public void findBusStationDepartures(String busStationId, long yyyymmddhhmm,
            SASAbusDBDataReady<BusTripStopList> response) {
        this.connect(
                "sasabusdb/findBusStationDepartures?busStationId=" + busStationId + "&yyyymmddhhmm=" + yyyymmddhhmm,
                "BusTripStopList", response);
    }

    @Override
    public void calcRoute(String startBusStationId, String endBusStationId, long yyyymmddhhmm,
            SASAbusDBDataReady<ConRes> response) throws Exception {
        this.connect("sasabusdb/calcRoute?startBusStationId=" + startBusStationId + "&endBusStationId="
                + endBusStationId + "&yyyymmddhhmm=" + yyyymmddhhmm, "ConRes", response);
    }

    @Override
    public void nextRoute(String context, SASAbusDBDataReady<ConRes> response) throws Exception {
        this.connect("sasabusdb/nextRoute?context=" + AbstractHtmlElementView.escapeText4url(context), "ConRes",
                response);
    }

    private <T> void connect(String methodUri, final String unmarshallerRootClassSimpleName,
            final SASAbusDBDataReady<T> callback) {
        final int i[] = new int[] { 0 };
        final long[] times = new long[6];
        times[i[0]++] = System.currentTimeMillis();

        JsonpRequestBuilder jsonpRequestBuilder = new JsonpRequestBuilder();
        jsonpRequestBuilder.requestObject(this.serviceBaseUrl + methodUri, new AsyncCallback<JavaScriptObject>() {
            @Override
            public void onSuccess(JavaScriptObject result) {
                times[i[0]++] = System.currentTimeMillis();
                SASAbusBackendUnmarshaller unmarshaller = new SASAbusBackendUnmarshaller();
                times[i[0]++] = System.currentTimeMillis();
                JSONObject jsonObject = new JSONObject(result);
                GWTStructure gwtStructure = new GWTStructure(jsonObject);
                try {
                    times[i[0]++] = System.currentTimeMillis();
                    Object obj = unmarshaller.newInstance(unmarshallerRootClassSimpleName);
                    times[i[0]++] = System.currentTimeMillis();
                    unmarshaller.unmarschall(gwtStructure, obj);
                    times[i[0]++] = System.currentTimeMillis();

                    String report = "";

                    for (int k = 0; k < times.length - 1; k++) {
                        report += "Time " + k + ": " + (times[k + 1] - times[k]) + "\n";
                    }

                    callback.ready((T) obj);
                } catch (Exception e) {
                    this.onFailure(e);
                }

            }

            @Override
            public void onFailure(Throwable caught) {
                caught.printStackTrace();
                Window.alert("ko contacting server: " + caught.getClass().getName() + " - " + caught.getMessage());
            }
        });
    }

}