src/java/org/mxchange/pizzaapplication/beans/country/PizzaCountryWebApplicationBean.java

   1 /*
   2  * Copyright (C) 2016 Roland Häder
   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.country;
  18
  19 import java.text.MessageFormat;
  20 import java.util.List;
  21 import javax.annotation.PostConstruct;
  22 import javax.enterprise.context.ApplicationScoped;
  23 import javax.enterprise.event.Observes;
  24 import javax.faces.view.facelets.FaceletException;
  25 import javax.inject.Named;
  26 import javax.naming.Context;
  27 import javax.naming.InitialContext;
  28 import javax.naming.NamingException;
  29 import org.mxchange.jcountry.data.Country;
  30 import org.mxchange.jcountry.data.CountrySingletonBeanRemote;
  31 import org.mxchange.pizzaapplication.beans.BasePizzaController;
  32 import org.mxchange.jcountry.events.ObservableAdminAddedCountryEvent;
  33
  34 /**
  35  * A country bean
  36  * <p>
  37  * @author Roland Häder<roland@mxchange.org>
  38  */
  39 @Named ("countryController")
  40 @ApplicationScoped
  41 public class PizzaCountryWebApplicationBean extends BasePizzaController implements PizzaCountryWebApplicationController {
  42
  43         /**
  44          * Serial number
  45          */
  46         private static final long serialVersionUID = 176_985_298_681_742_960L;
  47
  48         /**
  49          * Remote country EJB
  50          */
  51         private CountrySingletonBeanRemote countryBean;
  52
  53         /**
  54          * List of all countries
  55          */
  56         private List<Country> countryList;
  57
  58         /**
  59          * Default constructor
  60          */
  61         public PizzaCountryWebApplicationBean () {
  62                 // Try this
  63                 try {
  64                         // Get initial context
  65                         Context context = new InitialContext();
  66
  67                         // Try to lookup the bean
  68                         this.countryBean = (CountrySingletonBeanRemote) context.lookup("java:global/pizzaservice-ejb/country!org.mxchange.jcountry.data.CountrySingletonBeanRemote"); //NOI18N
  69                 } catch (final NamingException ex) {
  70                         // Continue to throw
  71                         throw new FaceletException(ex);
  72                 }
  73         }
  74
  75         @Override
  76         public void afterAdminAddedCountry (@Observes final ObservableAdminAddedCountryEvent event) {
  77                 // Is all valid?
  78                 if (null == event) {
  79                         // Throw NPE
  80                         throw new NullPointerException("event is null"); //NOI18N
  81                 } else if (event.getAddedCountry() == null) {
  82                         // Throw again ...
  83                         throw new NullPointerException("event.addedCountry is null"); //NOI18N
  84                 } else if (event.getAddedCountry().getCountryId() == null) {
  85                         // And again ...
  86                         throw new NullPointerException("event.addedCountry.countryId is null"); //NOI18N
  87                 } else if (event.getAddedCountry().getCountryId() < 1) {
  88                         // Id is invalid
  89                         throw new IllegalArgumentException(MessageFormat.format("event.addedCountry.countryId={0} is not valid.", event.getAddedCountry().getCountryId())); //NOI18N
  90                 }
  91
  92                 // Add the event
  93                 this.countryList.add(event.getAddedCountry());
  94         }
  95
  96         @Override
  97         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
  98         public List<Country> allCountries () {
  99                 // Return "cached" version
 100                 return this.countryList;
 101         }
 102
 103         /**
 104          * Post-initialization of this class
 105          */
 106         @PostConstruct
 107         public void init () {
 108                 // "Cache" country list as this will not change so often.
 109                 this.countryList = this.countryBean.allCountries();
 110         }
 111
 112 }