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