src/java/org/mxchange/pizzaapplication/beans/category/PizzaCategoryWebApplicationBean.java

   1 /*
   2  * Copyright (C) 2016 Roland Haeder
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU Affero General Public License as
   6  * published by the Free Software Foundation, either version 3 of the
   7  * License, or (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 Affero General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Affero General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.pizzaapplication.beans.category;
  18
  19 import java.text.MessageFormat;
  20 import java.util.LinkedList;
  21 import java.util.List;
  22 import javax.annotation.PostConstruct;
  23 import javax.enterprise.context.ApplicationScoped;
  24 import javax.enterprise.event.Observes;
  25 import javax.faces.FacesException;
  26 import javax.faces.view.facelets.FaceletException;
  27 import javax.inject.Named;
  28 import javax.naming.Context;
  29 import javax.naming.InitialContext;
  30 import javax.naming.NamingException;
  31 import org.mxchange.jshopcore.events.category.AddedCategoryEvent;
  32 import org.mxchange.jshopcore.model.category.Category;
  33 import org.mxchange.jshopcore.model.category.CategorySessionBeanRemote;
  34
  35 /**
  36  * General (product) category controller
  37  * <p>
  38  * @author Roland Haeder<roland@mxchange.org>
  39  */
  40 @Named ("categoryController")
  41 @ApplicationScoped
  42 public class PizzaCategoryWebApplicationBean implements PizzaCategoryWebApplicationController {
  43
  44         /**
  45          * Serial number
  46          */
  47         private static final long serialVersionUID = 58_137_539_530_279L;
  48
  49         /**
  50          * All categories
  51          */
  52         private List<Category> categories;
  53
  54         @Override
  55         public void addCategory (final Category category) {
  56                 // Add the category
  57                 this.categories.add(category);
  58         }
  59
  60         @Override
  61         public void afterShopCategoryAdded (@Observes final AddedCategoryEvent event) {
  62                 // Is all valid?
  63                 if (null == event) {
  64                         // Throw NPE
  65                         throw new NullPointerException("event is null"); //NOI18N
  66                 } else if (event.getAddedCategory() == null) {
  67                         // Throw again ...
  68                         throw new NullPointerException("event.addedCategory is null"); //NOI18N
  69                 } else if (event.getAddedCategory().getCategoryId() == null) {
  70                         // And again ...
  71                         throw new NullPointerException("event.addedCategory.categoryId is null"); //NOI18N
  72                 } else if (event.getAddedCategory().getCategoryId() < 1) {
  73                         // Id is invalid
  74                         throw new IllegalArgumentException(MessageFormat.format("event.addedCategory.categoryId={0} is not valid.", event.getAddedCategory().getCategoryId())); //NOI18N
  75                 }
  76
  77                 // Add it here, too.
  78                 this.addCategory(event.getAddedCategory());
  79         }
  80
  81         @Override
  82         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
  83         public List<Category> getAllCategories () throws FacesException {
  84                 // Return it
  85                 return this.categories;
  86         }
  87
  88         @Override
  89         public List<Category> getAllCategoriesParent () throws FaceletException {
  90                 // Get regular list
  91                 List<Category> list = new LinkedList<>(this.getAllCategories());
  92
  93                 // Return it
  94                 return list;
  95         }
  96
  97         /**
  98          * Initialization of this bean
  99          */
 100         @PostConstruct
 101         public void init () {
 102                 try {
 103                         // Get initial context
 104                         Context context = new InitialContext();
 105
 106                         // Try to lookup the bean
 107                         CategorySessionBeanRemote categoryBean = (CategorySessionBeanRemote) context.lookup("java:global/jshop-ejb/category!org.mxchange.jshopcore.model.category.CategorySessionBeanRemote"); //NOI18N
 108
 109                         // Get all categories
 110                         this.categories = categoryBean.getAllCategories();
 111                 } catch (final NamingException e) {
 112                         // Continued to throw
 113                         throw new FacesException(e);
 114                 }
 115         }
 116
 117 }