xp-dev.com Git - RRRRHHHH_Code/blob - ruralHouses/src/dataAccess/DB4oManager.java

   1 package dataAccess;
   2
   3 import java.io.File;
   4 //import java.util.Enumeration;
   5 //import java.util.Vector;
   6 import java.rmi.RemoteException;
   7 import java.util.Date;
   8 import java.util.LinkedList;
   9 import java.util.List;
  10 import java.util.ListIterator;
  11 import java.util.Vector;
  12
  13 import com.db4o.Db4oEmbedded;
  14 import com.db4o.ObjectContainer;
  15 import com.db4o.ObjectSet;
  16 import com.db4o.config.EmbeddedConfiguration;
  17 import com.db4o.cs.Db4oClientServer;
  18 import com.db4o.cs.config.ClientConfiguration;
  19 import com.db4o.query.Predicate;
  20
  21 import configuration.ConfigXML;
  22 import domain.Account;
  23 import domain.Administrator;
  24 import domain.Booking;
  25 import domain.HouseFeatures;
  26 import domain.Offer;
  27 //import dataModel.Offer;
  28 import domain.Owner;
  29 import domain.RuralHouse;
  30 import exceptions.OfferCanNotBeBooked;
  31 import exceptions.OverlappingOfferExists;
  32
  33 public class DB4oManager {
  34
  35         private static ObjectContainer db;
  36         private static EmbeddedConfiguration configuration;
  37         private static ClientConfiguration configurationCS;
  38         private int bookingNumber = 0; // if it is "static" then it is not
  39                                                                         // serialized
  40         private int offerNumber = 0; // if it is "static" then it is not serialized
  41         private static DB4oManager theDB4oManager = null;
  42
  43         private static DB4oManagerAux theDB4oManagerAux;
  44
  45         static ConfigXML c;
  46
  47         private DB4oManager() throws Exception {
  48                 theDB4oManagerAux = new DB4oManagerAux(0, 0);
  49                 c = ConfigXML.getInstance();
  50                 System.out.println("Creating DB4oManager instance => isDatabaseLocal: "
  51                                 + c.isDatabaseLocal() + " getDatabBaseOpenMode: "
  52                                 + c.getDataBaseOpenMode());
  53
  54                 if ((c.getDataBaseOpenMode().equals("initialize"))
  55                                 && (c.isDatabaseLocal()))
  56                         new File(c.getDb4oFilename()).delete();
  57
  58                 if (c.isDatabaseLocal()) {
  59                         openDB();
  60                         System.out.println("DataBase opened");
  61                 } else // c.isDatabaseLocal==false
  62                 {
  63                         openSDB();
  64                         System.out.println("Remote DataBase opened");
  65                 }
  66                 if (c.getDataBaseOpenMode().equals("initialize")) {
  67                         initializeDB();
  68                         System.out.println("DataBase initialized");
  69                 } else // c.getDataBaseOpenMode().equals("open")
  70
  71                 {
  72                         ObjectSet<DB4oManagerAux> res = db
  73                                         .queryByExample(DB4oManagerAux.class);
  74                         ListIterator<DB4oManagerAux> listIter = res.listIterator();
  75                         if (listIter.hasNext())
  76                                 theDB4oManagerAux = (DB4oManagerAux) res.next();
  77                 }
  78         }
  79
  80         private static void openDB() {
  81                 configuration = Db4oEmbedded.newConfiguration();
  82                 configuration.common().activationDepth(c.getActivationDepth());
  83                 configuration.common().updateDepth(c.getUpdateDepth());
  84                 configuration.common().objectClass(Owner.class).cascadeOnUpdate(true);
  85                 configuration.common().objectClass(Owner.class).cascadeOnDelete(true);
  86                 configuration.common().objectClass(RuralHouse.class)
  87                                 .cascadeOnUpdate(true);
  88                 configuration.common().objectClass(Account.class).cascadeOnUpdate(true);
  89                 db = Db4oEmbedded.openFile(configuration, c.getDb4oFilename());
  90         }
  91
  92         private void openSDB() {
  93
  94                 configurationCS = Db4oClientServer.newClientConfiguration();
  95                 configurationCS.common().activationDepth(c.getActivationDepth());
  96                 configurationCS.common().updateDepth(c.getUpdateDepth());
  97                 configurationCS.common().objectClass(Owner.class).cascadeOnDelete(true);
  98                 db = Db4oClientServer.openClient(configurationCS, c.getDatabaseNode(),
  99                                 c.getDatabasePort(), c.getUser(), c.getPassword());
 100
 101         }
 102
 103         class DB4oManagerAux {
 104                 int bookingNumber;
 105                 int offerNumber;
 106
 107                 DB4oManagerAux(int bookingNumber, int offerNumber) {
 108                         this.bookingNumber = bookingNumber;
 109                         this.offerNumber = offerNumber;
 110                 }
 111         }
 112
 113         public static DB4oManager getInstance() throws Exception {
 114                 if (theDB4oManager == null)
 115                         theDB4oManager = new DB4oManager();
 116                 return theDB4oManager;
 117         }
 118
 119         public void initializeDB() {
 120
 121                 try {
 122                         Owner jon = new Owner("Jon", "1349 5677 21 2133567777",
 123                                         "Jon@gmail.com");
 124                         Owner alfredo = new Owner("Alfredo", "4144 0087 23 9700002133",
 125                                         "alfredo@gmail.com");
 126                         jon.addRuralHouse("Ezkioko", "Ezkioko etxea", "Beatriz", 3, 3, 3,
 127                                         3, 3);
 128                         jon.addRuralHouse("Eskiatze", "Eskiatzeko etxea", "Guazate", 4, 4,
 129                                         4, 4, 4);
 130                         alfredo.addRuralHouse("Aitonako", "Casa del abuelo", "Vegas", 5, 5,
 131                                         5, 5, 5);
 132
 133                         alfredo.addRuralHouse("Murgoitz", "", "Cedro", 6, 6, 6, 6, 6);
 134                         Account jonAcc = new Account("1", "1", jon);
 135                         Account alfredoAcc = new Account("userAlfredo", "passAlfredo",
 136                                         alfredo);
 137
 138                         Account admin = new Account("admin", "admin", true);
 139                         db.store(Administrator.getInstance());
 140                         db.store(jonAcc);
 141                         db.store(alfredoAcc);
 142                         db.store(admin);
 143                         db.commit();
 144                 } finally {
 145                         db.close();
 146                 }
 147         }
 148
 149         public void deleteDB() {
 150
 151                 if (c.isDatabaseLocal() == false)
 152                         openSDB();
 153                 else
 154                         openDB();
 155
 156                 try {
 157                         Owner proto = new Owner(null, null, null);
 158                         ObjectSet<Owner> result = db.queryByExample(proto);
 159                         while (result.hasNext()) {
 160                                 Owner o = (Owner) result.next();
 161                                 System.out.println("Deleted owner: " + o.toString());
 162                                 db.delete(o);
 163                         }
 164                         db.commit();
 165                 } finally {
 166                         db.close();
 167                 }
 168         }
 169
 170         public Offer createOffer(RuralHouse ruralHouse, Date firstDay,
 171                         Date lastDay, float price) throws RemoteException, Exception {
 172                 Offer o = null;
 173
 174                 if (c.isDatabaseLocal() == false)
 175                         openSDB();
 176                 else
 177                         openDB();
 178
 179                 try {
 180
 181                         RuralHouse proto = new RuralHouse(ruralHouse.getHouseName(), null,
 182                                         null, null, null);
 183                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 184                         RuralHouse rh = (RuralHouse) result.next();
 185                         o = rh.createOffer(theDB4oManagerAux.offerNumber++, firstDay,
 186                                         lastDay, price);
 187                         db.store(theDB4oManagerAux); // To store the new value for
 188                                                                                         // offerNumber
 189                         db.store(o);
 190                         db.commit();
 191
 192                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 193                         System.out
 194                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createOffer");
 195                 } finally {
 196                         db.close();
 197                 }
 198                 return o;
 199         }
 200
 201         public void deleteOffer(Offer offer) throws RemoteException, Exception {
 202                 if (c.isDatabaseLocal() == false)
 203                         openSDB();
 204                 else
 205                         openDB();
 206
 207                 try {
 208                         ObjectSet<Offer> of = db.queryByExample(offer);
 209                         RuralHouse rh = of.get(0).getRuralHouse();
 210                         System.out.println(rh.offers.remove(of.get(0)));
 211                         db.store(rh);
 212                         db.commit();
 213
 214                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 215                         System.out
 216                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createOffer");
 217                 } finally {
 218                         db.close();
 219                 }
 220         }
 221
 222         public Administrator getAdminData() {
 223                 if (c.isDatabaseLocal() == false)
 224                         openSDB();
 225                 else
 226                         openDB();
 227
 228                 try {
 229
 230                         List<Administrator> admL = db.query(new Predicate<Administrator>() {
 231                                 /**
 232                                  *
 233                                  */
 234                                 private static final long serialVersionUID = 1L;
 235
 236                                 public boolean match(Administrator admin) {
 237                                         return true;
 238                                 }
 239                         });
 240
 241                         return admL.get(0);
 242                 } finally {
 243                         db.close();
 244
 245                 }
 246
 247         }
 248
 249         @SuppressWarnings("static-access")
 250         public void storeAdmin() {
 251                 if (c.isDatabaseLocal() == false)
 252                         openSDB();
 253                 else
 254                         openDB();
 255                 try {
 256
 257                         List<Administrator> admL = db.query(new Predicate<Administrator>() {
 258                                 /**
 259                                  *
 260                                  */
 261                                 private static final long serialVersionUID = 1L;
 262
 263                                 public boolean match(Administrator admin) {
 264                                         return true;
 265                                 }
 266                         });
 267
 268                         admL.get(0).setAddRequest(
 269                                         Administrator.getInstance().getAddRequest());
 270                         admL.get(0).setRemoveRequest(
 271                                         Administrator.getInstance().getRemoveRequest());
 272                         admL.get(0).setNewOwnerRequest(
 273                                         Administrator.getInstance().getNewOwnerRequest());
 274                         db.commit();
 275
 276                 } catch (Exception e) {
 277
 278                 } finally {
 279                         db.close();
 280                 }
 281
 282         }
 283
 284         /**
 285          * This method creates a book with a corresponding parameters
 286          *
 287          * @param First
 288          *            day, last day, house number and telephone
 289          * @return a book
 290          */
 291         public Booking createBooking(RuralHouse ruralHouse, Date firstDate,
 292                         Date lastDate, String bookTelephoneNumber)
 293                         throws OfferCanNotBeBooked {
 294
 295                 if (c.isDatabaseLocal() == false)
 296                         openSDB();
 297                 else
 298                         openDB();
 299
 300                 Booking bok = null;
 301
 302                 try {
 303
 304                         if (c.isDatabaseLocal() == false)
 305                                 openSDB();
 306
 307                         RuralHouse proto = new RuralHouse(ruralHouse.getHouseName(), null,
 308                                         ruralHouse.getDescription(), ruralHouse.getDistrict(), null);
 309                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 310                         RuralHouse rh = (RuralHouse) result.next();
 311
 312                         Offer offer;
 313                         offer = rh.findOffer(firstDate, lastDate);
 314
 315                         if (offer != null) {
 316                                 offer.createBooking(theDB4oManagerAux.bookingNumber++,
 317                                                 bookTelephoneNumber);
 318                                 db.store(theDB4oManagerAux); // To store the new value for
 319                                                                                                 // bookingNumber
 320                                 db.store(offer);
 321                                 db.commit();
 322                                 bok = offer.getBooking();
 323                         }
 324
 325                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 326                         System.out
 327                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createBooking");
 328                 } catch (Exception exc) {
 329                         exc.printStackTrace();
 330                 } finally {
 331                         db.close();
 332                 }
 333                 return bok;
 334         }
 335
 336         /**
 337          * This method existing owners
 338          *
 339          */
 340         public Vector<Owner> getOwners() throws RemoteException, Exception {
 341
 342                 if (c.isDatabaseLocal() == false)
 343                         openSDB();
 344                 else
 345                         openDB();
 346
 347                 try {
 348                         Owner proto = new Owner(null, null, null);
 349                         ObjectSet<Owner> result = db.queryByExample(proto);
 350                         Vector<Owner> owners = new Vector<Owner>();
 351                         while (result.hasNext())
 352                                 owners.add((Owner) result.next());
 353                         return owners;
 354                 } finally {
 355                         db.close();
 356                 }
 357         }
 358
 359         public Vector<RuralHouse> getAllRuralHouses() throws RemoteException,
 360                         Exception {
 361
 362                 if (c.isDatabaseLocal() == false)
 363                         openSDB();
 364                 else
 365                         openDB();
 366
 367                 try {
 368                         RuralHouse proto = new RuralHouse(null, null, null, null, null);
 369                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 370                         Vector<RuralHouse> ruralHouses = new Vector<RuralHouse>();
 371                         while (result.hasNext())
 372                                 ruralHouses.add((RuralHouse) result.next());
 373                         return ruralHouses;
 374                 } finally {
 375                         db.close();
 376                 }
 377         }
 378
 379         public boolean existsOverlappingOffer(RuralHouse rh, Date firstDay,
 380                         Date lastDay) throws RemoteException, OverlappingOfferExists {
 381
 382                 if (c.isDatabaseLocal() == false)
 383                         openSDB();
 384                 else
 385                         openDB();
 386
 387                 try {
 388
 389                         RuralHouse rhn = (RuralHouse) db.queryByExample(
 390                                         new RuralHouse(rh.getHouseName(), null, null, null, null))
 391                                         .next();
 392                         if (rhn.overlapsWith(firstDay, lastDay) != null)
 393                                 throw new OverlappingOfferExists();
 394                         else
 395                                 return false;
 396                 } finally {
 397                         db.close();
 398                 }
 399         }
 400
 401         public static ObjectContainer getContainer() {
 402                 return db;
 403         }
 404
 405         public void close() {
 406                 db.close();
 407                 System.out.println("DataBase closed");
 408         }
 409
 410         public String toString() {
 411                 return "bookingNumber=" + bookingNumber + " offerNumber=" + offerNumber;
 412         }
 413
 414         /**
 415          * @param usr
 416          * @param ps
 417          * @return
 418          * @throws RemoteException
 419          * @throws Exception
 420          */
 421         public Vector<Account> getAccount(Account proto) throws RemoteException,
 422                         Exception {
 423
 424                 if (c.isDatabaseLocal() == false)
 425                         openSDB();
 426                 else
 427                         openDB();
 428
 429                 try {
 430                         ObjectSet<Account> result = db.queryByExample(proto);
 431                         Vector<Account> accounts = new Vector<Account>();
 432                         while (result.hasNext())
 433                                 accounts.add((Account) result.next());
 434                         return accounts;
 435                 } finally {
 436                         db.close();
 437                 }
 438         }
 439
 440         /**
 441          * @param rh
 442          */
 443         public boolean storeRuralHouses(RuralHouse rh) {
 444
 445                 if (c.isDatabaseLocal() == false)
 446                         openSDB();
 447                 else
 448                         openDB();
 449
 450                 boolean stored = false;
 451                 RuralHouse house = new RuralHouse(rh.getHouseName(), null, null, null,
 452                                 null);
 453                 try {
 454                         ObjectSet<RuralHouse> result = db.queryByExample(house);
 455                         if (result.isEmpty()) {
 456                                 Owner ow = (Owner) db.queryByExample(rh.getOwner()).get(0);
 457                                 rh.setOwner(ow);
 458                                 ow.addRuralHouse(rh);
 459                                 db.store(rh);
 460                                 db.commit();
 461                                 stored = true;
 462                         } else {
 463                                 db.delete(result.get(0));
 464                                 db.store(rh);
 465                                 db.commit();
 466                                 stored = true;
 467                         }
 468                 } finally {
 469                         db.close();
 470                 }
 471                 return stored;
 472         }
 473
 474         public void removeHouse(RuralHouse rh, Owner owner) {
 475
 476                 if (c.isDatabaseLocal() == false)
 477                         openSDB();
 478                 else
 479                         openDB();
 480                 try {
 481                         ObjectSet<Owner> result = db.queryByExample(owner);
 482                         ObjectSet<RuralHouse> rhs = db.queryByExample(rh);
 483                         if (!rhs.isEmpty()) {
 484                                 Owner found = result.get(0);
 485                                 found.getRuralHouses().remove(rhs.get(0));
 486                                 db.delete(rhs.get(0));
 487                                 db.store(found);
 488                                 db.commit();
 489                         }
 490                 } catch (Exception exc) {
 491                         exc.printStackTrace();
 492                 } finally {
 493                         db.close();
 494                 }
 495
 496         }
 497
 498         public Vector<RuralHouse> getRuralHouses(String name, String town,
 499                         int nBed, int nKit, int nBath, int nPark, int nLiv) {
 500                 HouseFeatures fea = new HouseFeatures(nBed, nKit, nBath, nLiv, nPark);
 501                 RuralHouse rh = new RuralHouse(name, null, null, town, fea);
 502                 if (c.isDatabaseLocal() == false)
 503                         openSDB();
 504                 else
 505                         openDB();
 506
 507                 try {
 508                         ObjectSet<RuralHouse> result = db.queryByExample(rh);
 509                         Vector<RuralHouse> ruralHouses = new Vector<RuralHouse>();
 510                         while (result.hasNext())
 511                                 ruralHouses.add(result.next());
 512                         db.close();
 513                         return ruralHouses;
 514                 } catch (NullPointerException e) {
 515                         return null;
 516                 }
 517
 518         }
 519
 520         public boolean addAccount(Account acc) {
 521                 if (c.isDatabaseLocal() == false)
 522                         openSDB();
 523                 else
 524                         openDB();
 525
 526                 try {
 527                                 //TODO realize if there is another account with same username. Quite difficult with the f***ing salt
 528                                 db.store(acc);
 529                                 db.commit();
 530                 } catch (Exception exc) {
 531                         exc.printStackTrace();
 532                 } finally {
 533                         db.close();
 534                 }
 535                 return true;
 536         }
 537
 538         //TODO remove account
 539
 540         public boolean removeAccount(Account acc) {
 541                 return false;
 542         }
 543
 544 }