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

   1 package org.mxchange.pizzaapplication.beans.country;
   2
   3 /*
   4  * Copyright (C) 2016 Roland Haeder
   5  *
   6  * This program is free software: you can redistribute it and/or modify it under
   7  * the terms of the GNU General Public License as published by the Free Software
   8  * Foundation, either version 3 of the License, or (at your option) any later
   9  * version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  13  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
  14  * details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program. If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 import java.util.Collections;
  20 import java.util.List;
  21 import javax.annotation.PostConstruct;
  22 import javax.enterprise.context.ApplicationScoped;
  23 import javax.faces.view.facelets.FaceletException;
  24 import javax.inject.Named;
  25 import javax.naming.Context;
  26 import javax.naming.InitialContext;
  27 import javax.naming.NamingException;
  28 import org.mxchange.jcountry.data.Country;
  29 import org.mxchange.jcountry.data.CountrySingletonBeanRemote;
  30
  31 /**
  32  * A country bean
  33  * <p>
  34  * @author Roland Haeder<roland@mxchange.org>
  35  */
  36 @Named ("country")
  37 @ApplicationScoped
  38 public class CountryWebApplicationBean implements CountryWebApplicationController {
  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         private CountrySingletonBeanRemote countryBean;
  49
  50         /**
  51          * List of all countries
  52          */
  53         private List<Country> countryList;
  54
  55         /**
  56          * Default constructor
  57          */
  58         public CountryWebApplicationBean () {
  59                 // Try this
  60                 try {
  61                         // Get initial context
  62                         Context context = new InitialContext();
  63
  64                         // Try to lookup the bean
  65                         this.countryBean = (CountrySingletonBeanRemote) context.lookup("java:global/addressbook-ejb/country!org.mxchange.jcountry.data.AddressbookCountrySingletonBeanLocal"); //NOI18N
  66                 } catch (final NamingException ex) {
  67                         // Continue to throw
  68                         throw new FaceletException(ex);
  69                 }
  70         }
  71
  72         @Override
  73         public List<Country> allCountries () {
  74                 // Return "cached" version
  75                 return Collections.unmodifiableList(this.countryList);
  76         }
  77
  78         /**
  79          * Post-initialization of this class
  80          */
  81         @PostConstruct
  82         public void init () {
  83                 // "Cache" country list as this will not change so often.
  84                 this.countryList = this.countryBean.allCountries();
  85         }
  86 }