OpenDataExtractor.java Source code

Introduction

Here is the source code for OpenDataExtractor.java

Source

//package FunzioniSuOpenData;
/*         
*************************Copyright***************************
    
    
This software is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This software 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
    
*************************END***************************
*/

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;
import org.json.JSONArray;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Scanner;

public class OpenDataExtractor {

    public static void main(String[] args) {

        System.out.println("\nSeleziona in che campo fare la ricerca: ");
        System.out.println("Elenco completo delle gare in formato (1)"); // cc16106a-1a65-4c34-af13-cc045d181452
        System.out.println("Composizione delle commissioni giudicatrici (2)"); // c90f1ffb-c315-4f59-b0e3-b0f2f8709127
        System.out.println("Registro delle imprese escluse dalle gare (3)"); // 2ea798cc-1f52-4fc8-a28e-f92a6f409cb8
        System.out.println("Registro delle imprese invitate alle gare (4)"); // a124b6af-ae31-428a-8ac5-bb341feb3c46
        System.out.println("Registro delle imprese che hanno partecipato alle gare (5)");// e58396cf-1145-4cb1-84a4-34311238a0c6
        System.out.println("Anagrafica completa dei contratti per l'acquisizione di beni e servizi (6)"); // aa6a8664-5ef5-43eb-a563-910e25161798
        System.out.println("Fornitori (7)"); // 253c8ac9-8335-4425-84c5-4a90be863c00
        System.out.println("Autorizzazioni subappalti per i lavori  (8)"); // 4f9ba542-5768-4b39-a92a-450c45eabd5d
        System.out.println("Aggiudicazioni delle gare per i lavori (9)"); // 34e298ad-3a99-4feb-9614-b9c4071b9d8e
        System.out.println("Dati cruscotto lavori per area (10)"); // 1ee3ea1b-58e3-48bf-8eeb-36ac313eeaf8
        System.out.println("Dati cruscotto lavori per lotto (11)"); // cbededce-269f-48d2-8c25-2359bf246f42
        int count = 0;
        int scelta;
        String id_ref = "";
        Scanner scanner;

        try {

            do {
                scanner = new Scanner(System.in);
                scelta = scanner.nextInt();
                switch (scelta) {

                case 1:
                    id_ref = "cc16106a-1a65-4c34-af13-cc045d181452&q=";
                    break;
                case 2:
                    id_ref = "c90f1ffb-c315-4f59-b0e3-b0f2f8709127&q=";
                    break;
                case 3:
                    id_ref = "2ea798cc-1f52-4fc8-a28e-f92a6f409cb8&q=";
                    break;
                case 4:
                    id_ref = "a124b6af-ae31-428a-8ac5-bb341feb3c46&q=";
                    break;
                case 5:
                    id_ref = "e58396cf-1145-4cb1-84a4-34311238a0c6&q=";
                    break;
                case 6:
                    id_ref = "aa6a8664-5ef5-43eb-a563-910e25161798&q=";
                    break;
                case 7:
                    id_ref = "253c8ac9-8335-4425-84c5-4a90be863c00&q=";
                    break;
                case 8:
                    id_ref = "4f9ba542-5768-4b39-a92a-450c45eabd5d&q=";
                    break;
                case 9:
                    id_ref = "34e298ad-3a99-4feb-9614-b9c4071b9d8e&q=";
                    break;
                case 10:
                    id_ref = "1ee3ea1b-58e3-48bf-8eeb-36ac313eeaf8&q=";
                    break;
                case 11:
                    id_ref = "cbededce-269f-48d2-8c25-2359bf246f42&q=";
                    break;
                default:
                    System.out.println("Numero non selezionabile");
                    System.out.println("Reinserisci");
                    break;

                }
            } while (scelta <= 0 || scelta > 11);

            scanner = new Scanner(System.in);

            System.out.println("Inserisci un parametro di ricerca: ");
            String record = scanner.nextLine();
            String limit = "&limit=10000";
            System.out.println("id di riferimento: " + id_ref);
            System.out.println("___________________________");
            String requestString = "http://dati.openexpo2015.it/catalog/api/action/datastore_search?resource_id="
                    + id_ref + record + limit;
            HttpClient client = HttpClientBuilder.create().build();
            HttpGet request = new HttpGet(requestString);
            HttpResponse response = client.execute(request);

            BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
            String result = "";
            String resline = "";
            while ((resline = rd.readLine()) != null) {
                result += resline;
            }
            if (result != null) {
                JSONObject jsonObject = new JSONObject(result);
                JSONObject resultJson = (JSONObject) jsonObject.get("result");
                JSONArray resultJsonFields = (JSONArray) resultJson.get("fields");
                ArrayList<TypeFields> type = new ArrayList<TypeFields>();
                TypeFields type1;
                JSONObject temp;

                while (count < resultJsonFields.length()) {

                    temp = (JSONObject) resultJsonFields.get(count);
                    type1 = new TypeFields(temp.getString("id"), temp.getString("type"));
                    type.add(type1);
                    count++;
                }

                JSONArray arr = (JSONArray) resultJson.get("records");
                count = 0;

                while (count < arr.length()) {
                    System.out.println("Entry numero: " + count);
                    temp = (JSONObject) arr.get(count);
                    for (TypeFields temp2 : type) {
                        System.out.println(temp2.nameType + ": " + temp.get(temp2.nameType));
                    }
                    count++;
                    System.out.println("--------------------------");

                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}