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