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.ejb.EJB;
  23 import javax.enterprise.context.ApplicationScoped;
  24 import javax.enterprise.event.Observes;
  25 import javax.inject.Named;
  26 import org.mxchange.jcountry.data.Country;
  27 import org.mxchange.jcountry.data.CountrySingletonBeanRemote;
  28 import org.mxchange.jcountry.events.ObservableAdminAddedCountryEvent;
  29 import org.mxchange.jjobs.beans.BaseJobsController;
  30
  31 /**
  32  * A country bean
  33  * <p>
  34  * @author Roland Häder<roland@mxchange.org>
  35  */
  36 @Named ("countryController")
  37 @ApplicationScoped
  38 public class JobsCountryWebApplicationBean extends BaseJobsController implements JobsCountryWebApplicationController {
  39
  40         /**
  41          * Serial number
  42          */
  43         private static final long serialVersionUID = 176_985_298_681_742_960L;
  44
  45         /**
  46          * Remote country EJB
  47          */
  48         @EJB (lookup = "java:global/jjobs-ejb/country!org.mxchange.jcountry.data.CountrySingletonBeanRemote")
  49         private CountrySingletonBeanRemote countryBean;
  50
  51         /**
  52          * List of all countries
  53          */
  54         private List<Country> countryList;
  55
  56         /**
  57          * Default constructor
  58          */
  59         public JobsCountryWebApplicationBean () {
  60                 // Call super constructor
  61                 super();
  62         }
  63
  64         /**
  65          * Observing method when the event is fired that an administrator added a
  66          * new country
  67          * <p>
  68          * @param event Event instance
  69          */
  70         public void afterAdminAddedCountryEvent (@Observes final ObservableAdminAddedCountryEvent event) {
  71                 // Is all valid?
  72                 if (null == event) {
  73                         // Throw NPE
  74                         throw new NullPointerException("event is null"); //NOI18N
  75                 } else if (event.getAddedCountry() == null) {
  76                         // Throw again ...
  77                         throw new NullPointerException("event.addedCountry is null"); //NOI18N
  78                 } else if (event.getAddedCountry().getCountryId() == null) {
  79                         // And again ...
  80                         throw new NullPointerException("event.addedCountry.countryId is null"); //NOI18N
  81                 } else if (event.getAddedCountry().getCountryId() < 1) {
  82                         // Id is invalid
  83                         throw new IllegalArgumentException(MessageFormat.format("event.addedCountry.countryId={0} is not valid.", event.getAddedCountry().getCountryId())); //NOI18N
  84                 }
  85
  86                 // Add the event
  87                 this.countryList.add(event.getAddedCountry());
  88         }
  89
  90         @Override
  91         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
  92         public List<Country> allCountries () {
  93                 // Return "cached" version
  94                 return this.countryList;
  95         }
  96
  97         /**
  98          * Post-construction method
  99          */
 100         @PostConstruct
 101         public void init () {
 102                 // "Cache" country list as this will not change so often.
 103                 this.countryList = this.countryBean.allCountries();
 104         }
 105
 106 }