src/java/org/mxchange/pizzaapplication/application/PizzaServiceApplication.java

   1 /*
   2  * Copyright (C) 2015 Roland Haeder
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.pizzaapplication.application;
  18
  19 import java.io.IOException;
  20 import java.io.UnsupportedEncodingException;
  21 import java.lang.reflect.InvocationTargetException;
  22 import java.sql.SQLException;
  23 import java.text.MessageFormat;
  24 import java.util.Iterator;
  25 import javax.servlet.ServletContext;
  26 import javax.servlet.ServletException;
  27 import javax.servlet.http.HttpServletRequest;
  28 import javax.servlet.http.HttpServletResponse;
  29 import javax.servlet.http.HttpSession;
  30 import org.mxchange.jcore.exceptions.BadTokenException;
  31 import org.mxchange.jcore.exceptions.CorruptedDatabaseFileException;
  32 import org.mxchange.jcore.exceptions.UnsupportedDatabaseBackendException;
  33 import org.mxchange.jshop.category.Category;
  34 import org.mxchange.jshop.database.frontend.category.CategoryDatabaseFrontend;
  35 import org.mxchange.jshop.database.frontend.category.CategoryFrontend;
  36 import org.mxchange.jshop.database.frontend.product.ProductDatabaseFrontend;
  37 import org.mxchange.jshop.database.frontend.product.ProductFrontend;
  38 import org.mxchange.jshop.exceptions.CategoryTitleAlreadyUsedException;
  39 import org.mxchange.jshop.exceptions.ProductTitleAlreadyUsedException;
  40 import org.mxchange.jshop.item.AddableBasketItem;
  41 import org.mxchange.jshop.product.Product;
  42 import org.mxchange.pizzaapplication.BasePizzaServiceSystem;
  43
  44 /**
  45  * Main application class
  46  *
  47  * @author Roland Haeder
  48  */
  49 public class PizzaServiceApplication extends BasePizzaServiceSystem implements PizzaApplication {
  50         /**
  51          * Frontend for products
  52          */
  53         private ProductFrontend productFrontend;
  54
  55         /**
  56          * Frontend for categories
  57          */
  58         private CategoryFrontend categoryFrontend;
  59
  60         /**
  61          * Default constructor
  62          */
  63         public PizzaServiceApplication () {
  64                 // Trace message
  65                 this.getLogger().trace("CALLED!");
  66         }
  67
  68         @Override
  69         public void init (final ServletContext context) throws UnsupportedDatabaseBackendException, SQLException {
  70                 // Trace message
  71                 this.getLogger().trace(MessageFormat.format("context={0} - CALLED!", context)); //NOI18N
  72
  73                 // context should not be null
  74                 if (null == context) {
  75                         // Abort here
  76                         throw new NullPointerException("context is null");
  77                 }
  78
  79                 // Is the bundle initialized?
  80                 if (!this.isBundledInitialized()) {
  81                         // Temporary initialize default bundle
  82                         // @TODO The enum Gender uses this
  83                         this.initBundle();
  84                 }
  85
  86                 // Initialize properties from context
  87                 this.initProperties(context);
  88
  89                 // Init database frontends
  90                 this.initDatabaseFrontends();
  91
  92                 // Trace message
  93                 this.getLogger().trace("EXIT!"); //NOI18N
  94         }
  95
  96         /**
  97          * Calculates total amount of all choosen products
  98          *
  99          * @param request Request instance
 100          * @param session Session instance
 101          * @return Total amount of all choosen products
 102          * @deprecated Old lost code
 103          */
 104         @Override
 105         @Deprecated
 106         public int calculateTotalAmount (final HttpServletRequest request, final HttpSession session) throws ServletException {
 107                 // Trace message
 108                 this.getLogger().trace(MessageFormat.format("request={0},session={1} - CALLED!", request, session)); //NOI18N
 109
 110                 // Is product and session set?
 111                 if (null == request) {
 112                         // Not set
 113                         throw new NullPointerException("request is null"); //NOI18N
 114                 } else if (null == session) {
 115                         // Not set
 116                         throw new NullPointerException("session is null"); //NOI18N
 117                 }
 118
 119                 // Init/declare total price and iterator
 120                 int totalAmount = 0;
 121                 Iterator<Product> iterator = this.getAvailableProducts();
 122
 123                 // "Walk" over all products
 124                 while (iterator.hasNext()) {
 125                         // Get next product
 126                         Product product = iterator.next();
 127
 128                         // Is this choosen?
 129                         if (this.isProductChoosen(product, request, session)) {
 130                                 // Then add ordered amount
 131                                 this.getLogger().debug(MessageFormat.format("Counting {0} ...", product.getItemId())); //NOI18N
 132
 133                                 // Getting amount
 134                                 String amount = this.getAmountFromSession(product, session);
 135
 136                                 // Add it up
 137                                 this.getLogger().debug(MessageFormat.format("amount={0}", amount)); //NOI18N
 138                                 totalAmount += Integer.valueOf(amount);
 139                         }
 140                         this.getLogger().debug(MessageFormat.format("product={0},totalAmount={1}", product.getItemId(), totalAmount)); //NOI18N
 141                 }
 142
 143                 // Trace message
 144                 this.getLogger().trace(MessageFormat.format("totalAmount={0} - EXIT!", totalAmount)); //NOI18N
 145
 146                 // Return total price
 147                 return totalAmount;
 148         }
 149
 150         /**
 151          * Calculates total price of all choosen products
 152          *
 153          * @param request Request instance
 154          * @param session Session instance
 155          * @return Total price of all choosen products
 156          */
 157         @Override
 158         public float calculateTotalPrice (final HttpServletRequest request, final HttpSession session) throws ServletException {
 159                 // Trace message
 160                 this.getLogger().trace(MessageFormat.format("request={0},session={1} - CALLED!", request, session)); //NOI18N
 161
 162                 // Is product and session set?
 163                 if (null == request) {
 164                         // Not set
 165                         throw new NullPointerException("request is null"); //NOI18N
 166                 } else if (null == session) {
 167                         // Not set
 168                         throw new NullPointerException("session is null"); //NOI18N
 169                 }
 170
 171                 // Init total price
 172                 float totalPrice = 0.00f;
 173
 174                 // Get iterator
 175                 Iterator<Product> iterator = this.getAvailableProducts();
 176
 177                 // "Walk" over all products
 178                 while (iterator.hasNext()) {
 179                         // Get next product
 180                         Product product = iterator.next();
 181
 182                         // Is this choosen?
 183                         if (this.isProductChoosen(product, request, session)) {
 184                                 // Then add product's total price
 185                                 this.getLogger().debug(MessageFormat.format("Calling getTotalPositionPriceFromRequestSession({0},request,session) ...", product.getItemId())); //NOI18N
 186                                 totalPrice += this.getTotalPositionPriceFromRequestSession(product, request, session);
 187                         }
 188                         this.getLogger().debug(MessageFormat.format("product={0},totalPrice={1}", product.getItemId(), totalPrice)); //NOI18N
 189                 }
 190
 191                 // Trace message
 192                 this.getLogger().trace(MessageFormat.format(" totalPrice={0} - EXIT!", totalPrice)); //NOI18N
 193
 194                 // Return total price
 195                 return totalPrice;
 196         }
 197
 198         @Override
 199         public void doBootstrap () {
 200                 throw new UnsupportedOperationException("Not supported yet."); //NOI18N
 201         }
 202
 203         @Override
 204         public void doMainLoop () {
 205                 throw new UnsupportedOperationException("Not supported yet."); //NOI18N
 206         }
 207
 208         @Override
 209         public void doShutdown () {
 210                 throw new UnsupportedOperationException("Not supported yet."); //NOI18N
 211         }
 212
 213         /**
 214          * Some "getter" for amount from session
 215          *
 216          * @param product Product instance
 217          * @param session Session instance
 218          * @return Amount as string
 219          */
 220         @Override
 221         @Deprecated
 222         public String getAmountFromSession (final Product product, final HttpSession session) {
 223                 // Trace message
 224                 this.getLogger().trace(MessageFormat.format("product={0},session={1} - CALLED!", product, session)); //NOI18N
 225
 226                 // Is product and session set?
 227                 if (null == product) {
 228                         // Not set
 229                         throw new NullPointerException("product is null"); //NOI18N
 230                 } else if (null == session) {
 231                         // Not set
 232                         throw new NullPointerException("session is null"); //NOI18N
 233                 }
 234
 235                 // Get attribute
 236                 Object object = this.getValueFromSession(product, session, HTTP_PARAM_AMOUNT);
 237
 238                 // Is the object null?
 239                 if (null == object) {
 240                         // Trace message
 241                         this.getLogger().trace("Returning 0 - EXIT!"); //NOI18N
 242
 243                         // Not found
 244                         return "0"; //NOI18N
 245                 }
 246
 247                 // Trace message
 248                 this.getLogger().trace(MessageFormat.format("object={0} - EXIT!", object)); //NOI18N
 249
 250                 // Cast to string and return it
 251                 return (String) object;
 252         }
 253
 254         /**
 255          * Some "getter" for HTML code 'checked="checked"' if the product is choosen
 256          *
 257          * @param product Product instance
 258          * @param request Request instance
 259          * @param session Session instance
 260          * @return Whether the product is choosen
 261          */
 262         @Override
 263         public String getCheckedHtmlFromProduct (final Product product, final HttpServletRequest request, final HttpSession session) {
 264                 // Trace message
 265                 this.getLogger().trace(MessageFormat.format("product={0},request={1},session={2} - CALLED!", product, request, session)); //NOI18N
 266
 267                 // Is product and session set?
 268                 if (null == product) {
 269                         // Not set
 270                         throw new NullPointerException("product is null"); //NOI18N
 271                 } else if (null == request) {
 272                         // Not set
 273                         throw new NullPointerException("request is null"); //NOI18N
 274                 } else if (null == session) {
 275                         // Not set
 276                         throw new NullPointerException("session is null"); //NOI18N
 277                 }
 278
 279                 // First let's check if the product is choosen
 280                 if (this.isProductChoosen(product, request, session)) {
 281                         // Trace message
 282                         this.getLogger().trace("Returning checked=\"checked\" - EXIT!"); //NOI18N
 283
 284                         // Is choosen
 285                         return "checked=\"checked\""; //NOI18N
 286                 } else {
 287                         // Trace message
 288                         this.getLogger().trace("Returning empty string - EXIT!"); //NOI18N
 289
 290                         // Not choosen
 291                         return ""; //NOI18N
 292                 }
 293         }
 294
 295         /**
 296          * Some "getter" for choose from session
 297          *
 298          * @param product Product instance
 299          * @param session Session instance
 300          * @return Choose as string
 301          */
 302         @Override
 303         @Deprecated
 304         public String getChooseFromSession (final Product product, final HttpSession session) {
 305                 // Trace message
 306                 this.getLogger().trace(MessageFormat.format("product={0},session={1} - CALLED!", product, session)); //NOI18N
 307
 308                 // Is product and session set?
 309                 if (null == product) {
 310                         // Not set
 311                         throw new NullPointerException("product is null"); //NOI18N
 312                 } else if (null == session) {
 313                         // Not set
 314                         throw new NullPointerException("session is null"); //NOI18N
 315                 }
 316
 317                 // Get attribute
 318                 Object object = this.getValueFromSession(product, session, HTTP_PARAM_ITEM_ID);
 319
 320                 // Is the object null?
 321                 if (null == object) {
 322                         // Not found
 323                         this.getLogger().debug(MessageFormat.format("Returning empty string for product={0} ...", product.getItemId())); //NOI18N
 324                         return ""; //NOI18N
 325                 }
 326
 327                 // Trace message
 328                 this.getLogger().trace(MessageFormat.format("object={0} - CALLED!", object)); //NOI18N
 329
 330                 // Cast to string and return it
 331                 return (String) object;
 332         }
 333
 334         /**
 335          * Some "getter" for HTML code 'disabled="disabled"' for e.g. submit buttons
 336          *
 337          * @param request Request instance
 338          * @param session Session instance
 339          * @return Whether the product is choosen
 340          */
 341         @Override
 342         public String getDisabledHtmlFromSession (final HttpServletRequest request, final HttpSession session) throws ServletException {
 343                 // Trace message
 344                 this.getLogger().trace(MessageFormat.format("request={0},session={1} - CALLED!", request, session)); //NOI18N
 345
 346                 // Is product and session set?
 347                 if (null == request) {
 348                         // Not set
 349                         throw new NullPointerException("request is null"); //NOI18N
 350                 } else if (null == session) {
 351                         // Not set
 352                         throw new NullPointerException("session is null"); //NOI18N
 353                 }
 354
 355                 // Get "enabled" from request scope
 356                 Boolean enabled = Boolean.parseBoolean((String) request.getAttribute("enabled")); //NOI18N
 357
 358                 // Debug message
 359                 this.getLogger().debug(MessageFormat.format("enabled={0}", enabled)); //NOI18N
 360
 361                 // Is something selected?
 362                 if ((enabled) || (this.calculateTotalAmount(request, session) > 0)) {
 363                         // Trace message
 364                         this.getLogger().trace("Returning empty string - EXIT!"); //NOI18N
 365
 366                         // Something has been choosen
 367                         return ""; //NOI18N
 368                 } else {
 369                         // Trace message
 370                         this.getLogger().trace("Returning disabled=\"disabled\" - EXIT!"); //NOI18N
 371
 372                         // Nothing choosen yet
 373                         return "disabled=\"disabled\""; //NOI18N
 374                 }
 375         }
 376
 377         /**
 378          * Checks if given Product instance is available and returns a printable
 379          * (human-readable) string.
 380          *
 381          * @param product Product instance to check
 382          * @return Human-readable version of product availability
 383          */
 384         @Override
 385         public String getPrintableProduktAvailability (final Product product) {
 386                 // Trace message
 387                 this.getLogger().trace(MessageFormat.format("product={0} - CALLED!", product)); //NOI18N
 388
 389                 // Is it null?
 390                 if (null == product) {
 391                         // Should not be null
 392                         throw new NullPointerException("product is null"); //NOI18N
 393                 }
 394
 395                 // Get availability
 396                 if (product.getAvailable() == true) {
 397                         // Is available
 398                         return "Ja";
 399                 } else {
 400                         // Not, not for public
 401                         return "Nein";
 402                 }
 403         }
 404
 405         /**
 406          * Some getter for printable value from session or an empty string for null.
 407          *
 408          * @param session Session instance
 409          * @param key Key to get
 410          * @return Value from key, empty string for null
 411          */
 412         @Override
 413         public Object getPrintableValeFromSession (final HttpSession session, final String key) {
 414                 // Trace message
 415                 this.getLogger().trace(MessageFormat.format("session={0},key={1} - CALLED", session, key)); //NOI18N
 416
 417                 // Are both parameter not null?
 418                 if (null == session) {
 419                         // Abort here
 420                         throw new NullPointerException("session is null"); //NOI18N
 421                 } else  if (null == key) {
 422                         // Abort here
 423                         throw new NullPointerException("key is null"); //NOI18N
 424                 }
 425
 426                 // Now get it
 427                 Object value = this.getValueFromSession(session, key);
 428
 429                 // Debug message
 430                 this.getLogger().debug(MessageFormat.format("value={0}", value)); //NOI18N
 431
 432                 // Trace message
 433                 this.getLogger().trace(MessageFormat.format("Calling this.convertNullToEmpty({0}) ... - EXIT!", value)); //NOI18N
 434
 435                 // Return actual value
 436                 return this.convertNullToEmpty(value);
 437         }
 438
 439         /**
 440          * Some "getter" for a an array of only available products
 441          *
 442          * @return All products
 443          */
 444         @Override
 445         public Iterator<Product> getAvailableProducts () throws ServletException {
 446                 // categoryFrontend must be set
 447                 if (null == this.productFrontend) {
 448                         // Abort here
 449                         throw new NullPointerException("productFrontend is null");
 450                 }
 451
 452                 try {
 453                         // Ask frontend for a list of products
 454                         return this.productFrontend.getAvailableProducts();
 455                 } catch (final IOException | BadTokenException | SQLException | CorruptedDatabaseFileException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ex) {
 456                         throw new ServletException(ex);
 457                 }
 458         }
 459
 460         /**
 461          * Some "getter" for a an array of all products
 462          *
 463          * @return All products
 464          */
 465         @Override
 466         public Iterator<Product> getAllProducts () throws ServletException {
 467                 // Trace message
 468                 this.getLogger().trace("CALLED!");
 469
 470                 // categoryFrontend must be set
 471                 if (null == this.productFrontend) {
 472                         // Abort here
 473                         throw new NullPointerException("productFrontend is null");
 474                 }
 475
 476                 try {
 477                         // Ask frontend for a list of products
 478                         return this.productFrontend.getAllProducts();
 479                 } catch (final IOException | BadTokenException | SQLException | CorruptedDatabaseFileException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ex) {
 480                         throw new ServletException(ex);
 481                 }
 482         }
 483
 484         /**
 485          * Some "getter" for a an array of all categories
 486          *
 487          * @return All categories
 488          */
 489         @Override
 490         public Iterator<Category> getAllCategories () throws ServletException {
 491                 // Trace message
 492                 this.getLogger().trace("CALLED!");
 493
 494                 // categoryFrontend must be set
 495                 if (null == this.categoryFrontend) {
 496                         // Abort here
 497                         throw new NullPointerException("categoryFrontend is null");
 498                 }
 499
 500                 try {
 501                         // Ask frontend for a list of categories
 502                         return this.categoryFrontend.getAllCategories();
 503                 } catch (final IOException | BadTokenException | SQLException | CorruptedDatabaseFileException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ex) {
 504                         throw new ServletException(ex);
 505                 }
 506         }
 507
 508         /**
 509          * Some "getter" for total price of position from request or session.
 510          * Single price and amount is multiplyed.
 511          *
 512          * @param product Product instance
 513          * @param request Request instance
 514          * @param session Session instance
 515          * @return Amount as string
 516          */
 517         @Override
 518         @Deprecated
 519         public float getTotalPositionPriceFromRequestSession (final Product product, final HttpServletRequest request, final HttpSession session) {
 520                 throw new UnsupportedOperationException("This method is deprecated and shall not be called.");
 521         }
 522
 523         /**
 524          * Checks whether the given product is choosen, request overules session.
 525          *
 526          * @param product Product instance
 527          * @param request Request instance
 528          * @param session Session instance
 529          * @return Whether the product is choosen
 530          */
 531         @Override
 532         @Deprecated
 533         public boolean isProductChoosen (final Product product, final HttpServletRequest request, final HttpSession session) {
 534                 throw new UnsupportedOperationException("This method is deprecated and shall not be called");
 535         }
 536
 537         /**
 538          * Somewhat setter in session
 539          *
 540          * @param session Session instance
 541          * @param key Session key to set
 542          * @param value Value to set
 543          */
 544         @Override
 545         public void setValueInSession (final HttpSession session, final String key, final Object value) {
 546                 // Trace message
 547                 this.getLogger().trace(MessageFormat.format("session={0},key={1},value={2} - CALLED!", session, key, value)); //NOI18N
 548
 549                 synchronized(session) {
 550                         // Set it synced
 551                         session.setAttribute(key, value);
 552                 }
 553
 554                 // Trace message
 555                 this.getLogger().trace("EXIT!"); //NOI18N
 556         }
 557
 558         /**
 559          * Clears given parameter for product in session
 560          *
 561          * @param product Product instance
 562          * @param session Session instance
 563          * @param parameter Parameter to clear
 564          */
 565         private void clearSessionAttribute (final Product product, final HttpSession session, final String parameter) {
 566                 // Trace message
 567                 this.getLogger().trace(MessageFormat.format("produce={0},parameter={1},session={2} - CALLED!", product, parameter, session)); //NOI18N
 568
 569                 // Clear in session
 570                 this.getLogger().debug(MessageFormat.format("Clearing product={0},parameter={1} ...", product.getItemId(), parameter)); //NOI18N
 571                 this.setValueInSession(product, session, parameter, null);
 572
 573                 // Trace message
 574                 this.getLogger().trace("EXIT!"); //NOI18N
 575         }
 576
 577         /**
 578          * Some getter for value from session
 579          *
 580          * @param product Product instance
 581          * @param session Session instance
 582          * @param attribute Attribute to get value from
 583          * @return Value from session
 584          */
 585         private Object getValueFromSession (final Product product, final HttpSession session, final String attribute) {
 586                 // Trace message
 587                 this.getLogger().trace(MessageFormat.format("product={0},session={1},attribute={2} - CALLED!", product, session, attribute)); //NOI18N
 588
 589                 // Init variable
 590                 Object value = this.getValueFromSession(session, String.format(HTTP_PARAM_MASK, attribute, product.getItemId()));
 591
 592                 this.getLogger().debug(MessageFormat.format("product={0},attribute={1},value={2}", product.getItemId(), attribute, value)); //NOI18N
 593
 594                 // Trace message
 595                 this.getLogger().trace(MessageFormat.format("value={0} - EXIT!", value)); //NOI18N
 596
 597                 // Return it
 598                 return value;
 599         }
 600
 601         /**
 602          * Some getter for value from session
 603          *
 604          * @param session Session instance
 605          * @param key Key to get value from
 606          * @return Value from session
 607          */
 608         private Object getValueFromSession (final HttpSession session, final String key) {
 609                 // Trace message
 610                 this.getLogger().trace(MessageFormat.format("session={0},key={1} - CALLED!", session, key)); //NOI18N
 611
 612                 // Init value
 613                 Object value;
 614
 615                 // Get it synchronized from session
 616                 synchronized (session) {
 617                         value = session.getAttribute(key);
 618                 }
 619
 620                 // Trace message
 621                 this.getLogger().trace(MessageFormat.format("value={0} - EXIT!", value)); //NOI18N
 622
 623                 // Return it
 624                 return value;
 625         }
 626
 627         /**
 628          * Initializes database frontends.
 629          */
 630         private void initDatabaseFrontends () throws UnsupportedDatabaseBackendException, SQLException {
 631                 // Trace message
 632                 this.getLogger().trace("CALLED!"); //NOI18N
 633
 634                 // Product frontend
 635                 this.productFrontend = new ProductDatabaseFrontend();
 636
 637                 // Category frontend
 638                 this.categoryFrontend = new CategoryDatabaseFrontend();
 639
 640                 // Trace message
 641                 this.getLogger().trace("EXIT!"); //NOI18N
 642         }
 643
 644         /**
 645          * Checks whether given category title is already used
 646          *
 647          * @param title Title of category to check
 648          * @return Whether it has been found
 649          */
 650         private boolean isCategoryTitleUsed(final String title) throws IOException, SQLException, BadTokenException, CorruptedDatabaseFileException, NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
 651                 // categoryFrontend must be set
 652                 if (null == this.categoryFrontend) {
 653                         // Abort here
 654                         throw new NullPointerException("categoryFrontend is null");
 655                 }
 656
 657                 // Delegate to frontend
 658                 return this.categoryFrontend.isCategoryTitleUsed(title);
 659         }
 660
 661         /**
 662          * Checks if given product title is already used
 663          * @param title Product title to check
 664          * @return Whether the product title has already been used
 665          */
 666         private boolean isProductTitleUsed (final String title) throws IOException, SQLException, BadTokenException, CorruptedDatabaseFileException, NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
 667                 // categoryFrontend must be set
 668                 if (null == this.productFrontend) {
 669                         // Abort here
 670                         throw new NullPointerException("productFrontend is null");
 671                 }
 672
 673                 // Delegate to frontend
 674                 return this.productFrontend.isProductTitleUsed(title);
 675         }
 676
 677         /**
 678          * Checks if the product ordered?
 679          *
 680          * @param product Product instance
 681          * @param session HttpSession instance
 682          * @return Whether the product has been ordered
 683          */
 684         private boolean isProductOrdered (final Product product, final HttpSession session) {
 685                 // Trace message
 686                 this.getLogger().trace(MessageFormat.format("product={0},session={1} - CALLED!", product, session)); //NOI18N
 687
 688                 // Get session
 689                 Object isOrdered = this.getValueFromSession(product, session, SESSION_ORDERED);
 690                 this.getLogger().debug(MessageFormat.format("product={0},isOrdered={1}", product.getItemId(), isOrdered)); //NOI18N
 691
 692                 // Return result
 693                 return ("true".equals(isOrdered)); //NOI18N
 694         }
 695
 696         /**
 697          * Somewhat setter in session
 698          *
 699          * @param product Product instance
 700          * @param session Session instance
 701          * @param keyPart Key part to include in final key
 702          * @param value Value to set
 703          */
 704         private void setValueInSession (final Product product, final HttpSession session, final String keyPart, final Object value) {
 705                 // Trace message
 706                 this.getLogger().trace(MessageFormat.format("product={0},session={1},keyPart={2},value={3} - CALLED!", product, session, keyPart, value)); //NOI18N
 707
 708                 // Set it synced
 709                 this.getLogger().debug(MessageFormat.format("Setting value={0} for product={1},keyPart={2}", value, product.getItemId(), keyPart)); //NOI18N
 710                 this.setValueInSession(session, String.format(HTTP_PARAM_MASK, keyPart, product.getItemId()), value);
 711
 712                 // Trace message
 713                 this.getLogger().trace("EXIT!"); //NOI18N
 714         }
 715
 716         /**
 717          * Adds given category data from request to database
 718          *
 719          * @param request Request instance
 720          */
 721         @Override
 722         public void doAdminAddCategory (final HttpServletRequest request) throws ServletException, CategoryTitleAlreadyUsedException {
 723                 // Trace message
 724                 this.getLogger().trace(MessageFormat.format("request={0} - CALLED!", request)); //NOI18N
 725
 726                 // request must not be null
 727                 if (null == request) {
 728                         // Is null
 729                         throw new NullPointerException("request is null"); //NOI18N
 730                 }
 731
 732                 // Get all fields
 733                 String title = request.getParameter(CategoryFrontend.COLUMN_TITLE);
 734                 String parent = request.getParameter(CategoryFrontend.COLUMN_PARENT);
 735
 736                 // Debug message
 737                 this.getLogger().debug(MessageFormat.format("title={0},parent={1}", title, parent)); //NOI18N
 738
 739                 // Init variables for casting
 740                 Integer id = 0;
 741
 742                 // Check all fields
 743                 if (null == title) {
 744                         // "title" not set
 745                         throw new IllegalArgumentException(MessageFormat.format("{0} is not set.", CategoryFrontend.COLUMN_TITLE)); //NOI18N
 746                 } else if (title.isEmpty()) {
 747                         // Is left empty
 748                         throw new IllegalArgumentException(MessageFormat.format("{0} is empty.", CategoryFrontend.COLUMN_TITLE)); //NOI18N
 749                 } else if ((parent != null) && (!parent.isEmpty())) {
 750                         // "parent" is set, so check it
 751                         try {
 752                                 id = Integer.parseInt(parent);
 753                         } catch (final NumberFormatException e) {
 754                                 // Not valid number
 755                                 throw new IllegalArgumentException(e);
 756                         }
 757                 }
 758
 759                 try {
 760                         // Try to check if title is used already
 761                         if (this.isCategoryTitleUsed(title)) {
 762                                 // Title already used
 763                                 throw new CategoryTitleAlreadyUsedException(request);
 764                         }
 765                 } catch (final IOException | SQLException | BadTokenException | CorruptedDatabaseFileException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ex) {
 766                         throw new ServletException(ex);
 767                 }
 768
 769                 try {
 770                         // The category is not found, so add it to database
 771                         this.categoryFrontend.addCategory(title, id);
 772                 } catch (final SQLException | IOException ex) {
 773                         // Continue to throw it
 774                         throw new ServletException(ex);
 775                 }
 776
 777                 // Trace message
 778                 this.getLogger().trace("EXIT!"); //NOI18N
 779         }
 780
 781         /**
 782          * Adds given product data from request to database
 783          *
 784          * @param request Request instance
 785          */
 786         @Override
 787         public void doAdminAddProduct (final HttpServletRequest request) throws ServletException, ProductTitleAlreadyUsedException {
 788                 // Trace message
 789                 this.getLogger().trace(MessageFormat.format("request={0} - CALLED!", request)); //NOI18N
 790
 791                 // request must not be null
 792                 if (null == request) {
 793                         // Is null
 794                         throw new NullPointerException("request is null"); //NOI18N
 795                 }
 796
 797                 // Get title, price and category id
 798                 String title = request.getParameter(ProductFrontend.COLUMN_TITLE);
 799                 String price = request.getParameter(ProductFrontend.COLUMN_PRICE);
 800                 String category = request.getParameter(ProductFrontend.COLUMN_CATEGORY);
 801                 String available = request.getParameter(ProductFrontend.COLUMN_AVAILABLE);
 802
 803                 // Debug message
 804                 this.getLogger().debug(MessageFormat.format("title={0},price={1},category={2},available={3}", title, price, category, available)); //NOI18N
 805
 806                 // Variables for converting
 807                 Long id = null;
 808                 Float p = null;
 809
 810                 // Check all fields
 811                 if (null == title) {
 812                         // "title" not set
 813                         throw new IllegalArgumentException(MessageFormat.format("{0} is not set.", ProductFrontend.COLUMN_TITLE)); //NOI18N
 814                 } else if (title.isEmpty()) {
 815                         // Is left empty
 816                         throw new IllegalArgumentException(MessageFormat.format("{0} is empty.", ProductFrontend.COLUMN_TITLE)); //NOI18N
 817                 } else if (null == price) {
 818                         // "price" not set
 819                         throw new IllegalArgumentException(MessageFormat.format("{0} is not set.", ProductFrontend.COLUMN_PRICE)); //NOI18N
 820                 } else if (price.isEmpty()) {
 821                         // Is left empty
 822                         throw new IllegalArgumentException(MessageFormat.format("{0} is empty.", ProductFrontend.COLUMN_PRICE)); //NOI18N
 823                 } else if (null == category) {
 824                         // "title" not set
 825                         throw new IllegalArgumentException(MessageFormat.format("{0} is not set.", ProductFrontend.COLUMN_CATEGORY)); //NOI18N
 826                 } else if (category.isEmpty()) {
 827                         // Is left empty
 828                         throw new IllegalArgumentException(MessageFormat.format("{0} is empty.", ProductFrontend.COLUMN_CATEGORY)); //NOI18N
 829                 } else if (null == available) {
 830                         // "title" not set
 831                         throw new IllegalArgumentException(MessageFormat.format("{0} is not set.", ProductFrontend.COLUMN_AVAILABLE)); //NOI18N
 832                 } else if (available.isEmpty()) {
 833                         // Is left empty
 834                         throw new IllegalArgumentException(MessageFormat.format("{0} is empty.", ProductFrontend.COLUMN_AVAILABLE)); //NOI18N
 835                 } else if ((!"true".equals(available)) && (!"false".equals(available))) { //NOI18N
 836                         // Invalid value
 837                         throw new IllegalArgumentException(MessageFormat.format("{0} is invalid: {1}", ProductFrontend.COLUMN_AVAILABLE, available)); //NOI18N
 838                 }
 839
 840                 // Parse numbers
 841                 try {
 842                         id = Long.parseLong(category);
 843                         p = Float.parseFloat(price);
 844                 } catch (final NumberFormatException e) {
 845                         // Not valid number
 846                         throw new IllegalArgumentException(e);
 847                 }
 848
 849                 // Parse boolean
 850                 Boolean a = Boolean.parseBoolean(available);
 851
 852                 // Test on product title
 853                 try {
 854                         // Try to check if title is used already
 855                         if (this.isProductTitleUsed(title)) {
 856                                 // Title already used
 857                                 throw new ProductTitleAlreadyUsedException(request);
 858                         }
 859                 } catch (final IOException | SQLException | BadTokenException | CorruptedDatabaseFileException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ex) {
 860                         throw new ServletException(ex);
 861                 }
 862
 863                 try {
 864                         // The product is not found, so add it to database
 865                         this.productFrontend.addProduct(title, p, id, a);
 866                 } catch (final SQLException | IOException ex) {
 867                         // Continue to throw it
 868                         throw new ServletException(ex);
 869                 }
 870
 871                 // Trace message
 872                 this.getLogger().trace("EXIT!"); //NOI18N
 873         }
 874
 875         /**
 876          * Generates link HTML code for given category's parent id, if set. This
 877          * link then points to products.jsp?category_id=x
 878          *
 879          * @param category Category instance
 880          * @return HTML code
 881          */
 882         @Override
 883         public String generateLinkForParent (final Category category) {
 884                 // Trace message
 885                 this.getLogger().trace(MessageFormat.format("category={0} - CALLED!", category)); //NOI18N
 886
 887                 // category must not be null
 888                 if (null == category) {
 889                         // Is null
 890                         throw new NullPointerException("category is null"); //NOI18N
 891                 }
 892
 893                 // Get parent id
 894                 Long parent = category.getParent();
 895
 896                 // Is the id set?
 897                 if (parent > 0) {
 898                         // Product HTML code for link
 899                         throw new UnsupportedOperationException(MessageFormat.format("parent={0} - Unfinished!", parent)); //NOI18N
 900                 }
 901
 902                 // No parent set
 903                 return "Keine";
 904         }
 905
 906         @Override
 907         public String getPrintableProduktCategory (final Product product) throws ServletException {
 908                 // Trace message
 909                 this.getLogger().trace(MessageFormat.format("product={0} - CALLED!", product)); //NOI18N
 910
 911                 // product must not be null
 912                 if (null == product) {
 913                         // Abort here
 914                         throw new NullPointerException("product is null"); //NOI18N
 915                 }
 916
 917                 // Declare category
 918                 Category category;
 919
 920                 try {
 921                         // Get Category instance from product over the frontend
 922                         category = this.categoryFrontend.getCategory(product);
 923                 } catch (final IOException | SQLException | BadTokenException | CorruptedDatabaseFileException | NoSuchMethodException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
 924                         throw new ServletException(ex);
 925                 }
 926
 927                 // Debug message
 928                 this.getLogger().debug(MessageFormat.format("category={0}", category)); //NOI18N
 929
 930                 String title = null;
 931                 try {
 932                         // Now get title from it and return it
 933                         title = category.getDecodedTitle();
 934                 } catch (final UnsupportedEncodingException ex) {
 935                         // Continue to throw as cause
 936                         throw new ServletException(ex);
 937                 }
 938
 939                 // Trace message
 940                 this.getLogger().trace(MessageFormat.format("title={0} - EXIT!", title)); //NOI18N
 941
 942                 // Return it
 943                 return title;
 944         }
 945
 946         /**
 947          * Checks if product's title is already used.
 948          *
 949          * @param request Request instance
 950          * @return Whether the product title is already used
 951          * @throws java.io.IOException If any IO error occurs
 952          * @throws org.mxchange.jcore.exceptions.BadTokenException If a bad token was found in a file-based database backend's file ... ;-)
 953          * @throws java.sql.SQLException If any SQL error occurs
 954          * @throws org.mxchange.jcore.exceptions.CorruptedDatabaseFileException If the database file is damaged
 955          * @throws java.lang.NoSuchMethodException If a method was not found
 956          * @throws java.lang.IllegalAccessException If the method cannot be accessed
 957          * @throws java.lang.reflect.InvocationTargetException Any other problems?
 958          */
 959         private boolean isProductTitleUsed (final HttpServletRequest request) throws IOException, SQLException, BadTokenException, CorruptedDatabaseFileException, NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
 960                 // Trace message
 961                 this.getLogger().trace(MessageFormat.format("request={0} - CALLED!", request)); //NOI18N
 962
 963                 // Init title
 964                 String title = request.getParameter(ProductFrontend.COLUMN_TITLE);
 965
 966                 // request must not be null and "title" must be found and non-empty
 967                 if (null == request) {
 968                         // Abort here
 969                         throw new NullPointerException("request is null"); //NOI18N
 970                 } else if (null == title) {
 971                         // title is not set
 972                         throw new IllegalArgumentException(MessageFormat.format("{0} is not set.", ProductFrontend.COLUMN_TITLE)); //NOI18N
 973                 } else if (title.isEmpty()) {
 974                         // Is left empty
 975                         throw new IllegalArgumentException(MessageFormat.format("{0} is empty.", ProductFrontend.COLUMN_TITLE)); //NOI18N
 976                 }
 977
 978                 // Default is not used
 979                 boolean isUsed = this.isProductTitleUsed(title);
 980
 981                 // Trace message
 982                 this.getLogger().trace(MessageFormat.format("isUsed={0} - EXIT!", isUsed)); //NOI18N
 983
 984                 // Return it
 985                 return isUsed;
 986         }
 987
 988         /**
 989          * Handles admin form requests
 990          * @param request Request instance
 991          * @param response Response instance
 992          * @throws ServletException If something unexpected happened
 993          */
 994         @Override
 995         public void doAdminHandleProductForms (final HttpServletRequest request, final HttpServletResponse response) throws ServletException {
 996                 // Trace message
 997                 this.getLogger().trace(MessageFormat.format("request={0},response={1} - CALLED!", request, response)); //NOI18N
 998
 999                 // request and response must both be set
1000                 if (null == request) {
1001                         // request is null
1002                         throw new NullPointerException("request is null"); //NOI18N
1003                 } else if (null == response) {
1004                         // response is null
1005                         throw new NullPointerException("response is null"); //NOI18N
1006                 }
1007
1008                 // Try this operations
1009                 try {
1010                         // Is it post?
1011                         if ("POST".equals(request.getMethod())) { //NOI18N
1012                                 // Is "add/edit/delete" set?
1013                                 if (request.getParameter("add") != null) { //NOI18N
1014                                         // Is it already added?
1015                                         if (this.isProductTitleUsed(request)) {
1016                                                 // Debug message
1017                                                 this.getLogger().debug("Already used, redirecting ..."); //NOI18N
1018
1019                                                 // Already added, so redirect here, else a ServletException will be thrown
1020                                                 response.sendRedirect(String.format("%s/admin/product.jsp?already=1", request.getContextPath())); //NOI18N
1021                                         } else {
1022                                                 // Add new product
1023                                                 this.doAdminAddProduct(request);
1024                                         }
1025                                 } else if (request.getParameter("edit") != null) { //NOI18N
1026                                         // @TODO
1027                                 } else if (request.getParameter("delete") != null) { //NOI18N
1028                                         // @TODO
1029                                 }
1030
1031                                 // Redirect to proper URL
1032                                 // @TODO Commented out for developing:
1033                                 //response.sendRedirect(request.getContextPath() + "/finished.jsp");
1034                         }
1035                 } catch (final IOException | SQLException | BadTokenException | CorruptedDatabaseFileException | ProductTitleAlreadyUsedException | NoSuchMethodException | IllegalAccessException | InvocationTargetException | IllegalArgumentException ex) {
1036                         // Throw it as cause
1037                         throw new ServletException(ex);
1038                 }
1039
1040                 // Trace message
1041                 this.getLogger().trace("EXIT!"); //NOI18N
1042         }
1043
1044         /**
1045          * Handles admin form requests
1046          * @param request Request instance
1047          * @param response Response instance
1048          * @throws ServletException If something unexpected happened
1049          */
1050         @Override
1051         public void doAdminHandleCategoryForms (final HttpServletRequest request, final HttpServletResponse response) throws ServletException {
1052                 // Trace message
1053                 this.getLogger().trace(MessageFormat.format("request={0},response={1} - CALLED!", request, response)); //NOI18N
1054
1055                 // request and response must both be set
1056                 if (null == request) {
1057                         // request is null
1058                         throw new NullPointerException("request is null"); //NOI18N
1059                 } else if (null == response) {
1060                         // response is null
1061                         throw new NullPointerException("response is null"); //NOI18N
1062                 }
1063
1064                 // Try this operations
1065                 try {
1066                         // Is it post?
1067                         if ("POST".equals(request.getMethod())) { //NOI18N
1068                                 // Is "add/edit/delete" set?
1069                                 if (request.getParameter("add") != null) { //NOI18N
1070                                         // Is the category title already used?
1071                                         if (this.isCategoryTitleUsed(request)) {
1072                                                 // Debug message
1073                                                 this.getLogger().debug("Already used, redirecting ..."); //NOI18N
1074
1075                                                 // Already added, so redirect here, else a ServletException will be thrown
1076                                                 response.sendRedirect(String.format("%s/admin/category.jsp?already=1", request.getContextPath())); //NOI18N
1077                                         } else {
1078                                                 // Add new category
1079                                                 this.doAdminAddCategory(request);
1080                                         }
1081                                 } else if (request.getParameter("edit") != null) { //NOI18N
1082                                         // @TODO
1083                                 } else if (request.getParameter("delete") != null) { //NOI18N
1084                                         // @TODO
1085                                 }
1086
1087                                 // Redirect to proper URL
1088                                 // @TODO Commented out for developing:
1089                                 //response.sendRedirect(request.getContextPath() + "/finished.jsp");
1090                         }
1091                 } catch (final IOException | SQLException | BadTokenException | CorruptedDatabaseFileException | CategoryTitleAlreadyUsedException | NoSuchMethodException | IllegalAccessException | InvocationTargetException | IllegalArgumentException ex) {
1092                         // Throw it as cause
1093                         throw new ServletException(ex);
1094                 }
1095
1096                 // Trace message
1097                 this.getLogger().trace("EXIT!"); //NOI18N
1098         }
1099
1100         /**
1101          * Checks if category's title is already used.
1102          *
1103          * @param request Request instance
1104          * @return Whether the product title is already used
1105          * @throws java.io.IOException If any IO error occurs
1106          * @throws org.mxchange.jcore.exceptions.BadTokenException If a bad token was found in a file-based database backend's file ... ;-)
1107          * @throws java.sql.SQLException If any SQL error occurs
1108          * @throws org.mxchange.jcore.exceptions.CorruptedDatabaseFileException If the database file is damaged
1109          * @throws java.lang.NoSuchMethodException If a method was not found
1110          * @throws java.lang.IllegalAccessException If the method cannot be accessed
1111          * @throws java.lang.reflect.InvocationTargetException Any other problems?
1112          */
1113         private boolean isCategoryTitleUsed (final HttpServletRequest request) throws IOException, SQLException, BadTokenException, CorruptedDatabaseFileException, NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
1114                 // Trace message
1115                 this.getLogger().trace(MessageFormat.format("request={0} - CALLED!", request)); //NOI18N
1116
1117                 // Init title
1118                 String title = request.getParameter(CategoryFrontend.COLUMN_TITLE);
1119
1120                 // request must not be null and "title" must be found and non-empty
1121                 if (null == request) {
1122                         // Abort here
1123                         throw new NullPointerException("request is null"); //NOI18N
1124                 } else if (null == title) {
1125                         // title is not set
1126                         throw new IllegalArgumentException(MessageFormat.format("{0} is not set.", CategoryFrontend.COLUMN_TITLE)); //NOI18N
1127                 } else if (title.isEmpty()) {
1128                         // Is left empty
1129                         throw new IllegalArgumentException(MessageFormat.format("{0} is empty.", CategoryFrontend.COLUMN_TITLE)); //NOI18N
1130                 }
1131
1132                 // Default is not used
1133                 boolean isUsed = this.isCategoryTitleUsed(title);
1134
1135                 // Trace message
1136                 this.getLogger().trace(MessageFormat.format("isUsed={0} - EXIT!", isUsed)); //NOI18N
1137
1138                 // Return it
1139                 return isUsed;
1140         }
1141
1142         @Override
1143         public Product getProduct (final AddableBasketItem item) throws ServletException {
1144                 // Trace message
1145                 this.getLogger().trace("item=" + item + " - CALLED!");
1146
1147                 // item should not be null
1148                 if (null == item) {
1149                         // Abort here
1150                         throw new NullPointerException("item is null");
1151                 } else if (null == this.productFrontend) {
1152                         // Abort here
1153                         throw new NullPointerException("productFrontend is null");
1154                 }
1155
1156                 // Init product instance
1157                 Product product = null;
1158
1159                 try {
1160                         // Call frontend
1161                         product = this.productFrontend.getProduct(item);
1162                 } catch (final SQLException | IOException | BadTokenException | CorruptedDatabaseFileException | NoSuchMethodException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
1163                         // Continue to throw
1164                         throw new ServletException(ex);
1165                 }
1166
1167                 // Trace message
1168                 this.getLogger().trace("product=" + product + " - EXIT!");
1169
1170                 // Return it
1171                 return product;
1172         }
1173 }