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

   1 /*
   2  * Copyright (C) 2016 - 2024 Free Software Foundation
   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.RequestScoped;
  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.jproduct.events.category.AddedCategoryEvent;
  32 import org.mxchange.jproduct.model.category.Category;
  33 import org.mxchange.jproduct.model.category.CategorySessionBeanRemote;
  34 import org.mxchange.pizzaapplication.beans.BasePizzaBean;
  35
  36 /**
  37  * General (product) category controller
  38  * <p>
  39  * @author Roland Häder<roland@mxchange.org>
  40  */
  41 @Named ("categoryController")
  42 @RequestScoped
  43 public class PizzaCategoryWebRequestBean extends BasePizzaBean implements PizzaCategoryWebRequestController {
  44
  45         /**
  46          * Serial number
  47          */
  48         private static final long serialVersionUID = 58_137_539_530_279L;
  49
  50         /**
  51          * All categories
  52          */
  53         private List<Category> categories;
  54
  55         @Override
  56         public void afterShopCategoryAdded (@Observes final AddedCategoryEvent event) {
  57                 // Is all valid?
  58                 if (null == event) {
  59                         // Throw NPE
  60                         throw new NullPointerException("event is null"); //NOI18N
  61                 } else if (event.getAddedCategory() == null) {
  62                         // Throw again ...
  63                         throw new NullPointerException("event.addedCategory is null"); //NOI18N
  64                 } else if (event.getAddedCategory().getCategoryId() == null) {
  65                         // And again ...
  66                         throw new NullPointerException("event.addedCategory.categoryId is null"); //NOI18N
  67                 } else if (event.getAddedCategory().getCategoryId() < 1) {
  68                         // Id is invalid
  69                         throw new IllegalArgumentException(MessageFormat.format("event.addedCategory.categoryId={0} is not valid.", event.getAddedCategory().getCategoryId())); //NOI18N
  70                 }
  71
  72                 // Add the category
  73                 this.categories.add(event.getAddedCategory());
  74         }
  75
  76         @Override
  77         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
  78         public List<Category> getAllCategories () throws FacesException {
  79                 // Return it
  80                 return this.categories;
  81         }
  82
  83         @Override
  84         public List<Category> getAllCategoriesParent () throws FaceletException {
  85                 // Get regular list
  86                 List<Category> list = new LinkedList<>(this.getAllCategories());
  87
  88                 // Return it
  89                 return list;
  90         }
  91
  92         /**
  93          * Initialization of this bean
  94          */
  95         @PostConstruct
  96         public void init () {
  97                 try {
  98                         // Get initial context
  99                         Context context = new InitialContext();
 100
 101                         // Try to lookup the bean
 102                         CategorySessionBeanRemote categoryBean = (CategorySessionBeanRemote) context.lookup("java:global/jshop-ejb/category!org.mxchange.jshopcore.model.category.CategorySessionBeanRemote"); //NOI18N
 103
 104                         // Get all categories
 105                         this.categories = categoryBean.allCategories();
 106                 } catch (final NamingException e) {
 107                         // Continued to throw
 108                         throw new FacesException(e);
 109                 }
 110         }
 111
 112 }