com.warsaw.data.service.PlaceService.java Source code

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Here is the source code for com.warsaw.data.service.PlaceService.java

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package com.warsaw.data.service;

import com.warsaw.data.model.Place;
import com.warsaw.data.serviceLocal.PlaceServiceLocal;
import com.warsaw.data.utils.JsonReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.ejb.Stateless;
import org.json.JSONArray;
import org.json.JSONObject;

/**
 *
 * @author Pawel
 */
@Stateless
public class PlaceService implements PlaceServiceLocal {

    private List<Place> culturePlaces;
    private List<Place> sportPlaces;
    private List<Place> sleepingPlaces;

    public PlaceService() {
        culturePlaces = this.getAllCulturePlaces();
        sportPlaces = this.getAllFootballPlaces();
        sleepingPlaces = this.getAllSleepingPlaces();
    }

    private List<Place> getAllSleepingPlaces() {
        sleepingPlaces = new ArrayList<>();

        JSONObject json = this.getJsonFromURL(
                "https://api.um.warszawa.pl/api/action/wfsstore_get/?id=f019448f-951c-439e-bf37-c3268682752e&&apikey=6259fbb5-468a-476c-be8c-10da5c20ad7a");

        try {
            sleepingPlaces = this.getAnyPlaces(json, 4, 8);
        } catch (Exception e) {
            return Collections.emptyList();
        }

        return sleepingPlaces;
    }

    private List<Place> getAllCulturePlaces() {
        culturePlaces = new ArrayList<>();

        JSONObject json = this.getJsonFromURL(
                "https://api.um.warszawa.pl/api/action/wfsstore_get/?id=e26218cb-61ec-4ccb-81cc-fd19a6fee0f8&apikey=6259fbb5-468a-476c-be8c-10da5c20ad7a");

        try {
            culturePlaces = this.getAnyPlaces(json, 4, 5);
        } catch (Exception e) {
            return Collections.emptyList();
        }

        return culturePlaces;
    }

    /**
     * Getting JSON from URL
     * @param url
     * @return  JSON object
     */
    private JSONObject getJsonFromURL(String url) {
        JSONObject json = null;
        while (json == null) {
            try {
                json = JsonReader.readJSON(url);
            } catch (Exception ex) {
            }
        }

        return json;
    }

    private List<Place> getAllFootballPlaces() {
        sportPlaces = new ArrayList<>();
        JSONObject json = this.getJsonFromURL(
                "https://api.um.warszawa.pl/api/action/wfsstore_get/?id=9317a2dc-d08a-41bc-874d-01cc2dc88006&apikey=6259fbb5-468a-476c-be8c-10da5c20ad7a");

        try {
            sportPlaces = this.getAnyPlaces(json, 1, 2);
        } catch (Exception e) {
            return Collections.emptyList();
        }

        return sportPlaces;
    }

    /**
     *  Getting any places list from JSON file
     * @param json  JSON file
     * @param descIdx  Index of description field
     * @param areaIdx  Index of area field
     * @return  List of places
     * @throws Exception 
     */
    private List<Place> getAnyPlaces(JSONObject json, int descIdx, int areaIdx) throws Exception {
        List<Place> places = new ArrayList<>();

        JSONObject obj = (JSONObject) json.get("result");
        JSONArray obj1 = (JSONArray) obj.get("featureMemberList");
        for (int i = 0; i < obj1.length(); i++) {
            JSONObject obj2 = (JSONObject) obj1.getJSONObject(i);
            JSONArray obj3 = (JSONArray) obj2.get("properties");
            String desc = obj3.getJSONObject(descIdx).getString("value");
            String area = obj3.getJSONObject(areaIdx).getString("value");

            JSONObject obj4 = (JSONObject) obj2.get("geometry");
            JSONArray coordinates = (JSONArray) obj4.getJSONArray("coordinates");
            JSONObject obj5 = (JSONObject) coordinates.getJSONObject(0);

            String lon = obj5.getString("longitude");
            String lat = obj5.getString("latitude");

            Place place = new Place();

            place.setLat(lat);
            place.setLon(lon);
            place.setDesc(desc);
            place.setArea(area);

            places.add(place);
        }

        return places;
    }

    /**
     * Getting theatres from specific area
     * @param area  Area (f.e. Bielany, oliborz)
     * @return   List of places from specific area
     */
    @Override
    public List<Place> getCulturePlacesByArea(String area) {
        List<Place> placesFromArea = new ArrayList<>();
        for (Place p : culturePlaces) {
            if (p.getArea().equals(area)) {
                placesFromArea.add(p);
            }
        }

        return placesFromArea;
    }

    /**
     * Getting football fields from specific area 
     * @param area  Area (f.e. Bielany, oliborz)
     * @return   List of places from speicifc area
     */
    @Override
    public List<Place> getFootballFieldsByArea(String area) {
        List<Place> placesFromArea = new ArrayList<>();
        for (Place p : sportPlaces) {
            if (p.getArea().equals(area)) {
                placesFromArea.add(p);
            }
        }

        return placesFromArea;
    }

}