src/java/org/mxchange/addressbook/beans/mobileprovider/list/AddressbookMobileProviderListWebViewBean.java

   1 /*
   2  * Copyright (C) 2016 - 2022 Free Software Foundation
   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.list;
  18
  19 import fish.payara.cdi.jsr107.impl.NamedCache;
  20 import java.text.MessageFormat;
  21 import java.util.Comparator;
  22 import java.util.LinkedList;
  23 import java.util.List;
  24 import javax.annotation.PostConstruct;
  25 import javax.cache.Cache;
  26 import javax.ejb.EJB;
  27 import javax.enterprise.event.Observes;
  28 import javax.faces.view.ViewScoped;
  29 import javax.inject.Inject;
  30 import javax.inject.Named;
  31 import org.mxchange.addressbook.beans.BaseAddressbookBean;
  32 import org.mxchange.jphone.events.mobileprovider.added.ObservableAdminMobileProviderAddedEvent;
  33 import org.mxchange.jphone.exceptions.mobileprovider.MobileProviderNotFoundException;
  34 import org.mxchange.jphone.model.phonenumbers.mobileprovider.MobileProvider;
  35 import org.mxchange.jphone.model.phonenumbers.mobileprovider.MobileProviderSingletonBeanRemote;
  36
  37 /**
  38  * A views-scoped bean for mobile providers
  39  * <p>
  40  * @author Roland Häder<roland@mxchange.org>
  41  */
  42 @Named ("mobileProviderListController")
  43 @ViewScoped
  44 public class AddressbookMobileProviderListWebViewBean extends BaseAddressbookBean implements AddressbookMobileProviderListWebViewController {
  45
  46         /**
  47          * Serial number
  48          */
  49         private static final long serialVersionUID = 15_869_423_671_950_277L;
  50
  51         /**
  52          * A list of all mobile providers
  53          */
  54         private final List<MobileProvider> allMobileProviders;
  55
  56         /**
  57          * A list of filtered mobile providers
  58          */
  59         private List<MobileProvider> filteredMobileProviders;
  60
  61         /**
  62          * Remote EJB for mobile providers (regular)
  63          */
  64         @EJB (lookup = "java:global/addressbook-ejb/mobileProvider!org.mxchange.jphone.model.phonenumbers.mobileprovider.MobileProviderSingletonBeanRemote")
  65         private MobileProviderSingletonBeanRemote mobileProviderBean;
  66
  67         /**
  68          * "Cached" list of mobile providers
  69          */
  70         @Inject
  71         @NamedCache (cacheName = "mobileProviderCache")
  72         private transient Cache<Long, MobileProvider> mobileProviderCache;
  73
  74         /**
  75          * Selected mobile provider instance
  76          */
  77         private MobileProvider selectedMobileProvider;
  78
  79         /**
  80          * Default constructor
  81          */
  82         public AddressbookMobileProviderListWebViewBean () {
  83                 // Call super constructor
  84                 super();
  85
  86                 // Init list
  87                 this.allMobileProviders = new LinkedList<>();
  88         }
  89
  90         /**
  91          * Observes events being fired after the administrator has added a new
  92          * mobile provider
  93          * <p>
  94          * @param event Event being fired
  95          */
  96         public void afterAdminAddedMobileProviderEvent (@Observes final ObservableAdminMobileProviderAddedEvent event) {
  97                 // Is all valid?
  98                 if (null == event) {
  99                         // Throw NPE
 100                         throw new NullPointerException("event is null"); //NOI18N
 101                 } else if (event.getAddedMobileProvider() == null) {
 102                         // Throw again ...
 103                         throw new NullPointerException("event.addedMobileProvider is null"); //NOI18N
 104                 } else if (event.getAddedMobileProvider().getProviderId() == null) {
 105                         // And again ...
 106                         throw new NullPointerException("event.addedMobileProvider.providerId is null"); //NOI18N
 107                 } else if (event.getAddedMobileProvider().getProviderId() < 1) {
 108                         // Id is invalid
 109                         throw new IllegalArgumentException(MessageFormat.format("event.addedMobileProvider.providerId={0} is not valid.", event.getAddedMobileProvider().getProviderId())); //NOI18N
 110                 }
 111
 112                 // Add it to the list
 113                 this.mobileProviderCache.put(event.getAddedMobileProvider().getProviderId(), event.getAddedMobileProvider());
 114                 this.getAllMobileProviders().add(event.getAddedMobileProvider());
 115         }
 116
 117         @Override
 118         public MobileProvider findMobileProviderById (final Long mobileProviderId) throws MobileProviderNotFoundException {
 119                 // Validate parameter
 120                 if (null == mobileProviderId) {
 121                         // Throw NPE
 122                         throw new NullPointerException("mobileProviderId is null"); //NOI18N
 123                 } else if (mobileProviderId < 1) {
 124                         // Throw IAE
 125                         throw new IllegalArgumentException("mobileProviderId=" + mobileProviderId + " is invalid."); //NOI18N
 126                 } else if (!this.mobileProviderCache.containsKey(mobileProviderId)) {
 127                         // Not found
 128                         throw new MobileProviderNotFoundException(mobileProviderId);
 129                 }
 130
 131                 // Get it from cache
 132                 final MobileProvider mobileProvider = this.mobileProviderCache.get(mobileProviderId);
 133
 134                 // Return it
 135                 return mobileProvider;
 136         }
 137
 138         @Override
 139         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 140         public List<MobileProvider> getAllMobileProviders () {
 141                 // Return it
 142                 return this.allMobileProviders;
 143         }
 144
 145         /**
 146          * Getter for filtered mobile provider list
 147          * <p>
 148          * @return Filtered mobile providers
 149          */
 150         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 151         public List<MobileProvider> getFilteredMobileProviders () {
 152                 return this.filteredMobileProviders;
 153         }
 154
 155         /**
 156          * Getter for filtered mobile provider list
 157          * <p>
 158          * @param filteredMobileProviders Filtered mobile providers
 159          */
 160         @SuppressWarnings ("AssignmentToCollectionOrArrayFieldFromParameter")
 161         public void setFilteredMobileProviders (final List<MobileProvider> filteredMobileProviders) {
 162                 this.filteredMobileProviders = filteredMobileProviders;
 163         }
 164
 165         /**
 166          * Getter for selected mobile provider instance
 167          * <p>
 168          * @return Selected mobile provider instance
 169          */
 170         public MobileProvider getSelectedMobileProvider () {
 171                 return this.selectedMobileProvider;
 172         }
 173
 174         /**
 175          * Setter for selected mobile provider instance
 176          * <p>
 177          * @param selectedMobileProvider Selected mobile provider instance
 178          */
 179         public void setSelectedMobileProvider (final MobileProvider selectedMobileProvider) {
 180                 this.selectedMobileProvider = selectedMobileProvider;
 181         }
 182
 183         /**
 184          * Post-construction method
 185          */
 186         @PostConstruct
 187         public void initializeList () {
 188                 // Is cache there?
 189                 if (!this.mobileProviderCache.iterator().hasNext()) {
 190                         // Add all
 191                         for (final MobileProvider mobileProvider : this.mobileProviderBean.fetchAllMobileProviders()) {
 192                                 // Add it to cache
 193                                 this.mobileProviderCache.put(mobileProvider.getProviderId(), mobileProvider);
 194                         }
 195                 }
 196
 197                 // Is the list empty, but filled cache?
 198                 if (this.getAllMobileProviders().isEmpty() && this.mobileProviderCache.iterator().hasNext()) {
 199                         // Build up list
 200                         for (final Cache.Entry<Long, MobileProvider> currentEntry : this.mobileProviderCache) {
 201                                 // Add to list
 202                                 this.getAllMobileProviders().add(currentEntry.getValue());
 203                         }
 204
 205                         // Sort list
 206                         this.getAllMobileProviders().sort(new Comparator<MobileProvider>() {
 207                                 @Override
 208                                 public int compare (final MobileProvider mobileProvider1, final MobileProvider mobileProvider2) {
 209                                         return mobileProvider1.getProviderId() > mobileProvider2.getProviderId() ? 1 : mobileProvider1.getProviderId() < mobileProvider2.getProviderId() ? -1 : 0;
 210                                 }
 211                         });
 212                 }
 213         }
 214 }