src/java/org/mxchange/pizzaapplication/converter/category/PizzaCategoryConverter.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.converter.category;
  18
  19 import java.text.MessageFormat;
  20 import java.util.List;
  21 import java.util.Objects;
  22 import javax.faces.component.UIComponent;
  23 import javax.faces.context.FacesContext;
  24 import javax.faces.convert.Converter;
  25 import javax.faces.convert.FacesConverter;
  26 import javax.naming.Context;
  27 import javax.naming.InitialContext;
  28 import javax.naming.NamingException;
  29 import org.mxchange.jcoreeelogger.beans.local.logger.Log;
  30 import org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal;
  31 import org.mxchange.jproduct.model.category.Category;
  32 import org.mxchange.jproduct.model.category.CategorySessionBeanRemote;
  33
  34 /**
  35  * A converter for transferring category objects
  36  * <p>
  37  * @author Roland Häder<roland@mxchange.org>
  38  */
  39 @FacesConverter ("CategoryConverter")
  40 public class PizzaCategoryConverter implements Converter {
  41
  42         /**
  43          * Category EJB
  44          */
  45         private CategorySessionBeanRemote categoryBean;
  46
  47         /**
  48          * Logger instance
  49          */
  50         @Log
  51         private LoggerBeanLocal loggerBeanLocal;
  52
  53         /**
  54          * Default constructor
  55          */
  56         public PizzaCategoryConverter () {
  57                 // Try to get it
  58                 try {
  59                         // Get initial context
  60                         Context context = new InitialContext();
  61
  62                         // Lookup category bean
  63                         this.categoryBean = (CategorySessionBeanRemote) context.lookup("java:global/jshop-ejb/category!org.mxchange.jshopcore.model.category.CategorySessionBeanRemote"); //NOI18N
  64
  65                         // Lookup logger
  66                         this.loggerBeanLocal = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal"); //NOI18N
  67                 } catch (final NamingException ex) {
  68                         // Continue to throw it
  69                         throw new RuntimeException(MessageFormat.format("context.lookup() failed: {0}", ex.getMessage()), ex); //NOI18N
  70                 }
  71         }
  72
  73         @Override
  74         public Object getAsObject (final FacesContext context, final UIComponent component, final String submittedValue) {
  75                 // Trace message
  76                 // NOISY-DEBUG: this.loggerBeanLocal.logTrace(MessageFormat.format("getAsObject: context={0},component={1},submittedValue={2} - CALLED!", context, component, submittedValue)); //NOI18N
  77
  78                 // Get full list
  79                 List<Category> categoryList = this.categoryBean.allCategories();
  80
  81                 // Is the value null or empty?
  82                 if ((null == submittedValue) || (submittedValue.trim().isEmpty())) {
  83                         // Warning message
  84                         this.loggerBeanLocal.logWarning("getAsObject: submittedValue is null or empty - EXIT!"); //NOI18N
  85
  86                         // Return null
  87                         return null;
  88                 }
  89
  90                 // Init value
  91                 Category category = null;
  92
  93                 // Try this better
  94                 try {
  95                         // Convert it to long
  96                         Long categoryId = Long.parseLong(submittedValue);
  97
  98                         // Category id should not be below 1
  99                         assert (categoryId > 0) : "categoryId is smaller than one: " + categoryId; //NOI18N
 100
 101                         // Debug message
 102                         // NOISY-DEBUG: this.loggerBeanLocal.logDebug(MessageFormat.format("getAsObject: categoryId={0}", categoryId)); //NOI18N
 103
 104                         // Try to find it
 105                         for (final Category cat : categoryList) {
 106                                 // Is the id the same? (null-safe)
 107                                 if (Objects.equals(cat.getCategoryId(), categoryId)) {
 108                                         // Found it
 109                                         category = cat;
 110                                         break;
 111                                 }
 112                         }
 113
 114                         // Debug message
 115                         // NOISY-DEBUG: this.loggerBeanLocal.logDebug(MessageFormat.format("getAsObject: category={0}", category)); //NOI18N
 116                 } catch (final NumberFormatException ex) {
 117                         // Log exception (maybe to much?)
 118                         this.loggerBeanLocal.logException(ex);
 119                 }
 120
 121                 // Trace message
 122                 // NOISY-DEBUG: this.loggerBeanLocal.logTrace(MessageFormat.format("getAsObject: category={0} - EXIT!", category)); //NOI18N
 123
 124                 // Return it
 125                 return category;
 126         }
 127
 128         @Override
 129         public String getAsString (final FacesContext context, final UIComponent component, final Object value) {
 130                 // Trace message
 131                 this.loggerBeanLocal.logTrace(MessageFormat.format("getAsString: context={0},component={1},value={2} - CALLED!", context, component, value)); //NOI18N
 132
 133                 // Is the object null?
 134                 if (null == value) {
 135                         // Is null
 136                         return ""; //NOI18N
 137                 } else if (!(value instanceof Category)) {
 138                         // Not same interface
 139                         throw new IllegalArgumentException(MessageFormat.format("value {0} does not implement Category.", value)); //NOI18N
 140                 }
 141
 142                 // Return category id
 143                 String str = String.valueOf(((Category) value).getCategoryId());
 144
 145                 // Trace message
 146                 this.loggerBeanLocal.logTrace(MessageFormat.format("getAsString: str={0} - EXIT!", str)); //NOI18N
 147
 148                 // Return it
 149                 return str;
 150         }
 151
 152 }