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.List;
   9 import java.util.ListIterator;
  10 import java.util.Vector;
  11
  12 import com.db4o.Db4oEmbedded;
  13 import com.db4o.ObjectContainer;
  14 import com.db4o.ObjectSet;
  15 import com.db4o.config.EmbeddedConfiguration;
  16 import com.db4o.cs.Db4oClientServer;
  17 import com.db4o.cs.config.ClientConfiguration;
  18 import com.db4o.query.Predicate;
  19
  20 import configuration.ConfigXML;
  21 import domain.Account;
  22 import domain.Administrator;
  23 import domain.Booking;
  24 import domain.Client;
  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).cascadeOnDelete(true);
  85                 configuration.common().objectClass(Booking.class).cascadeOnDelete(true);
  86                 configuration.common().objectClass(RuralHouse.class)
  87                                 .cascadeOnDelete(true);
  88                 configuration.common().objectClass(Account.class).cascadeOnDelete(true);
  89                 configuration.common().objectClass(Offer.class).cascadeOnDelete(true);
  90                 configuration.common().objectClass(Owner.class).cascadeOnUpdate(true);
  91                 configuration.common().objectClass(Booking.class).cascadeOnUpdate(true);
  92                 configuration.common().objectClass(RuralHouse.class)
  93                                 .cascadeOnUpdate(true);
  94                 configuration.common().objectClass(Account.class).cascadeOnUpdate(true);
  95                 configuration.common().objectClass(Offer.class).cascadeOnUpdate(true);
  96                 configuration.common().objectClass(Account.class).cascadeOnUpdate(true);
  97                 db = Db4oEmbedded.openFile(configuration, c.getDb4oFilename());
  98         }
  99
 100         private void openSDB() {
 101
 102                 configurationCS = Db4oClientServer.newClientConfiguration();
 103                 configurationCS.common().activationDepth(c.getActivationDepth());
 104                 configurationCS.common().updateDepth(c.getUpdateDepth());
 105                 configurationCS.common().objectClass(Owner.class).cascadeOnDelete(true);
 106                 db = Db4oClientServer.openClient(configurationCS, c.getDatabaseNode(),
 107                                 c.getDatabasePort(), c.getUser(), c.getPassword());
 108
 109         }
 110
 111         class DB4oManagerAux {
 112                 int bookingNumber;
 113                 int offerNumber;
 114
 115                 DB4oManagerAux(int bookingNumber, int offerNumber) {
 116                         this.bookingNumber = bookingNumber;
 117                         this.offerNumber = offerNumber;
 118                 }
 119         }
 120
 121         public static DB4oManager getInstance() throws Exception {
 122                 if (theDB4oManager == null)
 123                         theDB4oManager = new DB4oManager();
 124                 return theDB4oManager;
 125         }
 126
 127         public void initializeDB() {
 128
 129                 try {
 130                         Owner jon = new Owner("Jon", "1349 5677 21 2133567777",
 131                                         "Jon@gmail.com");
 132                         Owner alfredo = new Owner("Alfredo", "4144 0087 23 9700002133",
 133                                         "alfredo@gmail.com");
 134                         jon.addRuralHouse("Ezkioko", "Ezkioko etxea", "Beatriz", 3, 3, 3,
 135                                         3, 3);
 136                         jon.addRuralHouse("Eskiatze", "Eskiatzeko etxea", "Guazate", 4, 4,
 137                                         4, 4, 4);
 138                         alfredo.addRuralHouse("Aitonako", "Casa del abuelo", "Vegas", 5, 5,
 139                                         5, 5, 5);
 140
 141                         alfredo.addRuralHouse("Murgoitz", "", "Cedro", 6, 6, 6, 6, 6);
 142                         Account jonAcc = new Account("1", "1", jon);
 143                         Account alfredoAcc = new Account("userAlfredo", "passAlfredo",
 144                                         alfredo);
 145
 146                         Account admin = new Account("admin", "admin", true);
 147                         db.store(Administrator.getInstance());
 148                         db.store(jonAcc);
 149                         db.store(alfredoAcc);
 150                         db.store(admin);
 151                         db.commit();
 152                 } finally {
 153                         db.close();
 154                 }
 155         }
 156
 157         public void deleteDB() {
 158
 159                 if (c.isDatabaseLocal() == false)
 160                         openSDB();
 161                 else
 162                         openDB();
 163
 164                 try {
 165                         Owner proto = new Owner(null, null, null);
 166                         ObjectSet<Owner> result = db.queryByExample(proto);
 167                         while (result.hasNext()) {
 168                                 Owner o = (Owner) result.next();
 169                                 System.out.println("Deleted owner: " + o.toString());
 170                                 db.delete(o);
 171                         }
 172                         db.commit();
 173                 } finally {
 174                         db.close();
 175                 }
 176         }
 177
 178         public Offer createOffer(RuralHouse ruralHouse, Date firstDay,
 179                         Date lastDay, float price) throws RemoteException, Exception {
 180                 Offer o = null;
 181
 182                 if (c.isDatabaseLocal() == false)
 183                         openSDB();
 184                 else
 185                         openDB();
 186
 187                 try {
 188
 189                         RuralHouse proto = new RuralHouse(ruralHouse.getHouseName(), null,
 190                                         null, null, null);
 191                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 192                         RuralHouse rh = (RuralHouse) result.next();
 193                         o = rh.createOffer(theDB4oManagerAux.offerNumber++, firstDay,
 194                                         lastDay, price);
 195                         db.store(theDB4oManagerAux); // To store the new value for
 196                                                                                         // offerNumber
 197                         db.store(o);
 198                         db.commit();
 199
 200                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 201                         System.out
 202                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createOffer");
 203                 } finally {
 204                         db.close();
 205                 }
 206                 return o;
 207         }
 208
 209         public void deleteOffer(Offer offer) throws RemoteException, Exception {
 210                 if (c.isDatabaseLocal() == false)
 211                         openSDB();
 212                 else
 213                         openDB();
 214
 215                 try {
 216                         ObjectSet<Offer> of = db.queryByExample(offer);
 217                         RuralHouse rh = of.get(0).getRuralHouse();
 218                         System.out.println(rh.getAllOffers().remove(of.get(0)));
 219                         db.store(rh);
 220                         db.commit();
 221
 222                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 223                         System.out
 224                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createOffer");
 225                 } finally {
 226                         db.close();
 227                 }
 228         }
 229
 230         public Vector<Offer> getRHsOffer(String name) {
 231                 if (c.isDatabaseLocal() == false)
 232                         openSDB();
 233                 else
 234                         openDB();
 235
 236                 try {
 237                         RuralHouse rh = (RuralHouse) db.queryByExample(
 238                                         new RuralHouse(name, null, null, null, null)).get(0);
 239                         Offer proto = new Offer(0, rh, null, null, 0);
 240                         ObjectSet<Offer> result = db.queryByExample(proto);
 241                         return new Vector<Offer>(result);
 242                 } finally {
 243                         db.close();
 244                 }
 245         }
 246
 247         public Administrator getAdminData() {
 248
 249                 if (c.isDatabaseLocal() == false)
 250                         openSDB();
 251                 else
 252                         openDB();
 253
 254                 try {
 255
 256                         List<Administrator> admL = db.query(new Predicate<Administrator>() {
 257                                 private static final long serialVersionUID = 1L;
 258
 259                                 public boolean match(Administrator admin) {
 260                                         return true;
 261                                 }
 262                         });
 263
 264                         return admL.get(0);
 265                 } finally {
 266                         db.close();
 267
 268                 }
 269
 270         }
 271
 272         public void storeAdmin() {
 273
 274                 if (c.isDatabaseLocal() == false)
 275                         openSDB();
 276                 else
 277                         openDB();
 278                 try {
 279
 280                         List<Administrator> admL = db.query(new Predicate<Administrator>() {
 281                                 /**
 282                                  *
 283                                  */
 284                                 private static final long serialVersionUID = 1L;
 285
 286                                 public boolean match(Administrator admin) {
 287                                         return true;
 288                                 }
 289                         });
 290
 291                         admL.get(0).setAddRequest(
 292                                         Administrator.getInstance().getAddRequest());
 293                         admL.get(0).setRemoveRequest(
 294                                         Administrator.getInstance().getRemoveRequest());
 295                         admL.get(0).setNewOwnerRequest(
 296                                         Administrator.getInstance().getNewOwnerRequest());
 297
 298                         db.commit();
 299
 300                 } catch (Exception e) {
 301
 302                 } finally {
 303                         db.close();
 304                 }
 305
 306         }
 307
 308         /**
 309          * This method creates a book with a corresponding parameters
 310          *
 311          * @param First
 312          *            day, last day, house number and telephone
 313          * @return a book
 314          */
 315         public Vector<Booking> createBooking(RuralHouse ruralHouse, Date firstDate,
 316                         Date lastDate, Client cl) throws OfferCanNotBeBooked {
 317
 318                 if (c.isDatabaseLocal() == false)
 319                         openSDB();
 320                 else
 321                         openDB();
 322
 323                 Vector<Booking> book = new Vector<Booking>();
 324
 325                 try {
 326
 327                         if (c.isDatabaseLocal() == false)
 328                                 openSDB();
 329
 330                         RuralHouse proto = new RuralHouse(ruralHouse.getHouseName(), null,
 331                                         ruralHouse.getDescription(), ruralHouse.getDistrict(), null);
 332                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 333                         RuralHouse rh = (RuralHouse) result.next();
 334
 335                         Offer offer;
 336                         offer = rh.findOffer(firstDate, lastDate);
 337
 338                         if (offer != null) {
 339                                 offer.createBooking(theDB4oManagerAux.bookingNumber++, cl);
 340                                 db.store(theDB4oManagerAux); // To store the new value for
 341                                                                                                 // bookingNumber
 342
 343                                 db.store(offer);
 344                                 db.commit();
 345                                 book = offer.getBookings();
 346
 347                         }
 348
 349                 } catch (com.db4o.ext.ObjectNotStorableException e) {
 350                         System.out
 351                                         .println("Error: com.db4o.ext.ObjectNotStorableException in createBooking");
 352                 } catch (Exception exc) {
 353                         exc.printStackTrace();
 354                 } finally {
 355                         db.close();
 356                 }
 357                 return book;
 358         }
 359
 360         /**
 361          * This method existing owners
 362          *
 363          */
 364         public Vector<Owner> getOwners() throws RemoteException, Exception {
 365
 366                 if (c.isDatabaseLocal() == false)
 367                         openSDB();
 368                 else
 369                         openDB();
 370
 371                 try {
 372                         Owner proto = new Owner(null, null, null);
 373                         ObjectSet<Owner> result = db.queryByExample(proto);
 374                         Vector<Owner> owners = new Vector<Owner>();
 375                         while (result.hasNext())
 376                                 owners.add((Owner) result.next());
 377                         return owners;
 378                 } finally {
 379                         db.close();
 380                 }
 381         }
 382
 383         public Vector<RuralHouse> getAllRuralHouses() throws RemoteException,
 384                         Exception {
 385
 386                 if (c.isDatabaseLocal() == false)
 387                         openSDB();
 388                 else
 389                         openDB();
 390
 391                 try {
 392                         RuralHouse proto = new RuralHouse(null, null, null, null, null);
 393                         ObjectSet<RuralHouse> result = db.queryByExample(proto);
 394                         return new Vector<RuralHouse>(result);
 395                 } finally {
 396                         db.close();
 397                 }
 398         }
 399
 400         public boolean existsOverlappingOffer(RuralHouse rh, Date firstDay,
 401                         Date lastDay) throws RemoteException, OverlappingOfferExists {
 402
 403                 if (c.isDatabaseLocal() == false)
 404                         openSDB();
 405                 else
 406                         openDB();
 407
 408                 try {
 409
 410                         RuralHouse rhn = (RuralHouse) db.queryByExample(
 411                                         new RuralHouse(rh.getHouseName(), null, null, null, null))
 412                                         .next();
 413                         if (rhn.overlapsWith(firstDay, lastDay) != null)
 414                                 throw new OverlappingOfferExists();
 415                         else
 416                                 return false;
 417                 } finally {
 418                         db.close();
 419                 }
 420         }
 421
 422         public static ObjectContainer getContainer() {
 423                 return db;
 424         }
 425
 426         public void close() {
 427                 db.close();
 428                 System.out.println("DataBase closed");
 429         }
 430
 431         public String toString() {
 432                 return "bookingNumber=" + bookingNumber + " offerNumber=" + offerNumber;
 433         }
 434
 435         /**
 436          * @param usr
 437          * @param ps
 438          * @return
 439          * @throws RemoteException
 440          * @throws Exception
 441          */
 442         public Vector<Account> getAccount(Account proto) throws RemoteException,
 443                         Exception {
 444
 445                 if (c.isDatabaseLocal() == false)
 446                         openSDB();
 447                 else
 448                         openDB();
 449
 450                 try {
 451                         ObjectSet<Account> result = db.queryByExample(proto);
 452                         Vector<Account> accounts = new Vector<Account>();
 453                         while (result.hasNext())
 454                                 accounts.add((Account) result.next());
 455                         return accounts;
 456                 } finally {
 457                         db.close();
 458                 }
 459         }
 460
 461         /**
 462          * @param rh
 463          */
 464         public boolean storeRuralHouses(RuralHouse rh) {
 465
 466                 if (c.isDatabaseLocal() == false)
 467                         openSDB();
 468                 else
 469                         openDB();
 470
 471                 boolean stored = false;
 472                 RuralHouse house = new RuralHouse(rh.getHouseName(), null, null, null,
 473                                 null);
 474                 try {
 475                         ObjectSet<RuralHouse> result = db.queryByExample(house);
 476                         if (result.isEmpty()) {
 477                                 Owner ow = (Owner) db.queryByExample(rh.getOwner()).get(0);
 478                                 rh.setOwner(ow);
 479                                 ow.addRuralHouse(rh);
 480                                 db.store(rh);
 481                                 db.commit();
 482                                 stored = true;
 483                         } else {
 484                                 db.delete(result.get(0));
 485                                 db.store(rh);
 486                                 db.commit();
 487                                 stored = true;
 488                         }
 489                 } finally {
 490                         db.close();
 491                 }
 492                 return stored;
 493         }
 494
 495         public void removeHouse(RuralHouse rh, Owner owner) {
 496
 497                 if (c.isDatabaseLocal() == false)
 498                         openSDB();
 499                 else
 500                         openDB();
 501                 try {
 502                         ObjectSet<Owner> result = db.queryByExample(owner);
 503                         ObjectSet<RuralHouse> rhs = db.queryByExample(rh);
 504                         if (!rhs.isEmpty()) {
 505                                 Owner found = result.get(0);
 506                                 found.getRuralHouses().remove(rhs.get(0));
 507                                 db.delete(rhs.get(0));
 508                                 db.store(found);
 509                                 db.commit();
 510                         }
 511                 } catch (Exception exc) {
 512                         exc.printStackTrace();
 513                 } finally {
 514                         db.close();
 515                 }
 516
 517         }
 518
 519         public Vector<RuralHouse> getRuralHouses(Owner ow, String name,
 520                         String town, int nBed, int nKit, int nBath, int nPark, int nLiv) {
 521                 HouseFeatures fea = new HouseFeatures(nBed, nKit, nBath, nLiv, nPark);
 522                 RuralHouse rh = new RuralHouse(name, ow, null, town, fea);
 523                 if (c.isDatabaseLocal() == false)
 524                         openSDB();
 525                 else
 526                         openDB();
 527
 528                 try {
 529                         ObjectSet<RuralHouse> result = db.queryByExample(rh);
 530                         Vector<RuralHouse> ruralHouses = new Vector<RuralHouse>();
 531                         while (result.hasNext())
 532                                 ruralHouses.add(result.next());
 533                         db.close();
 534                         return ruralHouses;
 535                 } catch (NullPointerException e) {
 536                         return null;
 537                 }
 538
 539         }
 540
 541         public boolean addAccount(Account acc) {
 542                 if (c.isDatabaseLocal() == false)
 543                         openSDB();
 544                 else
 545                         openDB();
 546
 547                 try {
 548                         ObjectSet<Account> result = db.queryByExample(new Account(acc
 549                                         .getUsername()));
 550                         if (result.isEmpty()) {
 551                                 db.store(acc);
 552                                 db.commit();
 553                                 return true;
 554                         }
 555                 } catch (Exception exc) {
 556                         exc.printStackTrace();
 557                 } finally {
 558                         db.close();
 559                 }
 560                 return false;
 561         }
 562
 563         public boolean removeAccount(Owner own) {
 564                 if (c.isDatabaseLocal() == false)
 565                         openSDB();
 566                 else
 567                         openDB();
 568
 569                 try {
 570                         ObjectSet<Account> result = db.queryByExample(new Account(own));
 571                         if (!result.isEmpty()) {
 572                                 db.delete(result.get(0));
 573                                 db.commit();
 574                                 return true;
 575                         }
 576                 } catch (Exception exc) {
 577                         exc.printStackTrace();
 578                 } finally {
 579                         db.close();
 580                 }
 581                 return false;
 582         }
 583
 584         public void acceptBooking(Offer of) {
 585                 Offer off = new Offer(of.getOfferNumber(), new RuralHouse(of
 586                                 .getRuralHouse().getHouseName(), null, null, null, null), null,
 587                                 null, 0);
 588                 if (c.isDatabaseLocal() == false)
 589                         openSDB();
 590                 else
 591                         openDB();
 592
 593                 try {
 594                         ObjectSet<Offer> result = db.queryByExample(off);
 595                         db.delete(result.get(0));
 596                         RuralHouse rh = result.get(0).getRuralHouse();
 597                         of.setRuralHouse(rh);
 598                         rh.getAllOffers().remove(result.get(0));
 599                         rh.getAllOffers().add(of);
 600                         db.store(rh);
 601                         db.close();
 602
 603                 } catch (Exception e) {
 604                         e.printStackTrace();
 605                         ;
 606                 }
 607         }
 608
 609         public void removeBooking(Booking b) {
 610                 if (c.isDatabaseLocal() == false)
 611                         openSDB();
 612                 else
 613                         openDB();
 614                 try {
 615                         Booking book = new Booking(b.getBookNumber(), new Offer(b
 616                                         .getOffer().getOfferNumber(), new RuralHouse(b.getOffer()
 617                                         .getRuralHouse().getHouseName(), null, null, null, null),
 618                                         null, null, 0), b.getClient(), b.getBookDate());
 619                         book.setOffer(null);
 620                         db.delete(book);
 621                         db.commit();
 622                 } catch (Exception e) {
 623                         e.printStackTrace();
 624                 } finally {
 625                         db.close();
 626                 }
 627
 628         }
 629 }