src/java/org/mxchange/addressbook/beans/mobileprovider/AddressbookMobileProviderWebRequestBean.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.addressbook.beans.mobileprovider;
  18
  19 import java.text.MessageFormat;
  20 import java.util.Iterator;
  21 import java.util.LinkedList;
  22 import java.util.List;
  23 import javax.annotation.PostConstruct;
  24 import javax.cache.Cache;
  25 import javax.ejb.EJB;
  26 import javax.enterprise.context.RequestScoped;
  27 import javax.enterprise.event.Observes;
  28 import javax.inject.Inject;
  29 import javax.inject.Named;
  30 import org.mxchange.addressbook.beans.BaseAddressbookController;
  31 import org.mxchange.jphone.events.mobileprovider.added.AdminAddedMobileProviderEvent;
  32 import org.mxchange.jphone.model.phonenumbers.mobileprovider.MobileProvider;
  33 import org.mxchange.jphone.model.phonenumbers.mobileprovider.MobileProviderSingletonBeanRemote;
  34
  35 /**
  36  * A general bean for mobile providers
  37  * <p>
  38  * @author Roland Häder<roland@mxchange.org>
  39  */
  40 @Named ("mobileProviderController")
  41 @RequestScoped
  42 public class AddressbookMobileProviderWebRequestBean extends BaseAddressbookController implements AddressbookMobileProviderWebRequestController {
  43
  44         /**
  45          * Serial number
  46          */
  47         private static final long serialVersionUID = 15_869_423_671_950_276L;
  48
  49         /**
  50          * "Cached" list of mobile providers
  51          */
  52         @Inject
  53         @Cached (cacheName = "mobileProviderCache")
  54         private transient Cache<Long, MobileProvider> mobileProviderCache;
  55
  56         /**
  57          * Remote EJB for mobile providers (regular)
  58          */
  59         @EJB (lookup = "java:global/addressbook-ejb/mobileprovider!org.mxchange.jphone.phonenumbers.mobileprovider.MobileProviderSingletonBeanRemote")
  60         private MobileProviderSingletonBeanRemote mobileProviderBean;
  61
  62         /**
  63          * Default constructor
  64          */
  65         public AddressbookMobileProviderWebRequestBean () {
  66                 // Call super constructor
  67                 super();
  68         }
  69
  70         /**
  71          * Observes events being fired after the administrator has added a new
  72          * mobile provider
  73          * <p>
  74          * @param event Event being fired
  75          */
  76         public void afterAdminAddedMobileProviderEvent (@Observes final AdminAddedMobileProviderEvent event) {
  77                 // Is all valid?
  78                 if (null == event) {
  79                         // Throw NPE
  80                         throw new NullPointerException("event is null"); //NOI18N
  81                 } else if (event.getAddedMobileProvider() == null) {
  82                         // Throw again ...
  83                         throw new NullPointerException("event.addedMobileProvider is null"); //NOI18N
  84                 } else if (event.getAddedMobileProvider().getProviderId() == null) {
  85                         // And again ...
  86                         throw new NullPointerException("event.addedMobileProvider.providerId is null"); //NOI18N
  87                 } else if (event.getAddedMobileProvider().getProviderId() < 1) {
  88                         // Id is invalid
  89                         throw new IllegalArgumentException(MessageFormat.format("event.addedMobileProvider.providerId={0} is not valid.", event.getAddedMobileProvider().getProviderId())); //NOI18N
  90                 }
  91
  92                 // Add it to the list
  93                 this.mobileProviderCache.put(event.getAddedMobileProvider().getProviderId(), event.getAddedMobileProvider());
  94         }
  95
  96         @Override
  97         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
  98         public List<MobileProvider> allMobileProviders () {
  99                 // Init list
 100                 List<MobileProvider> list = new LinkedList<>();
 101
 102                 // Get iterator
 103                 Iterator<Cache.Entry<Long, MobileProvider>> iterator = this.mobileProviderCache.iterator();
 104
 105                 // Loop over all
 106                 while (iterator.hasNext()) {
 107                         // Get next entry
 108                         final Cache.Entry<Long, MobileProvider> next = iterator.next();
 109
 110                         // Add value to list
 111                         list.add(next.getValue());
 112                 }
 113
 114                 // Return it
 115                 return list;
 116         }
 117
 118         /**
 119          * Post-construction method
 120          */
 121         @PostConstruct
 122         public void init () {
 123                 // Is cache there?
 124                 if (!this.mobileProviderCache.iterator().hasNext()) {
 125                         // Get whole list
 126                         List<MobileProvider> list = this.mobileProviderBean.allMobileProviders();
 127
 128                         // Add all
 129                         for (final Iterator<MobileProvider> iterator = list.iterator(); iterator.hasNext();) {
 130                                 // Get next element
 131                                 final MobileProvider next = iterator.next();
 132
 133                                 // Add it to cache
 134                                 this.mobileProviderCache.put(next.getProviderId(), next);
 135                         }
 136                 }
 137         }
 138
 139 }