src/java/org/mxchange/jjobs/beans/country/JobsCountryWebApplicationBean.java

   1 /*
   2  * Copyright (C) 2016, 2017 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.jjobs.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.jcountry.events.ObservableAdminAddedCountryEvent;
  32 import org.mxchange.jjobs.beans.BaseJobsController;
  33
  34 /**
  35  * A country bean
  36  * <p>
  37  * @author Roland Häder<roland@mxchange.org>
  38  */
  39 @Named ("countryController")
  40 @ApplicationScoped
  41 public class JobsCountryWebApplicationBean extends BaseJobsController implements JobsCountryWebApplicationController {
  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 JobsCountryWebApplicationBean () {
  62                 // Call super constructor
  63                 super();
  64         }
  65
  66         /**
  67          * Observing method when the event is fired that an administrator added a
  68          * new country
  69          * <p>
  70          * @param event Event instance
  71          */
  72         public void afterAdminAddedCountryEvent (@Observes final ObservableAdminAddedCountryEvent event) {
  73                 // Is all valid?
  74                 if (null == event) {
  75                         // Throw NPE
  76                         throw new NullPointerException("event is null"); //NOI18N
  77                 } else if (event.getAddedCountry() == null) {
  78                         // Throw again ...
  79                         throw new NullPointerException("event.addedCountry is null"); //NOI18N
  80                 } else if (event.getAddedCountry().getCountryId() == null) {
  81                         // And again ...
  82                         throw new NullPointerException("event.addedCountry.countryId is null"); //NOI18N
  83                 } else if (event.getAddedCountry().getCountryId() < 1) {
  84                         // Id is invalid
  85                         throw new IllegalArgumentException(MessageFormat.format("event.addedCountry.countryId={0} is not valid.", event.getAddedCountry().getCountryId())); //NOI18N
  86                 }
  87
  88                 // Add the event
  89                 this.countryList.add(event.getAddedCountry());
  90         }
  91
  92         @Override
  93         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
  94         public List<Country> allCountries () {
  95                 // Return "cached" version
  96                 return this.countryList;
  97         }
  98
  99         /**
 100          * Post-construction method
 101          */
 102         @PostConstruct
 103         public void init () {
 104                 // Try this
 105                 try {
 106                         // Get initial context
 107                         Context context = new InitialContext();
 108
 109                         // Try to lookup the bean
 110                         this.countryBean = (CountrySingletonBeanRemote) context.lookup("java:global/jjobs-ejb/country!org.mxchange.jcountry.data.CountrySingletonBeanRemote"); //NOI18N
 111                 } catch (final NamingException ex) {
 112                         // Continue to throw
 113                         throw new FaceletException(ex);
 114                 }
 115
 116                 // "Cache" country list as this will not change so often.
 117                 this.countryList = this.countryBean.allCountries();
 118         }
 119
 120 }