src/java/org/mxchange/jfinancials/beans/mobileprovider/FinancialsMobileProviderWebRequestBean.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.jfinancials.beans.mobileprovider;
  18
  19 import fish.payara.cdi.jsr107.impl.NamedCache;
  20 import java.text.MessageFormat;
  21 import java.util.Comparator;
  22 import java.util.Iterator;
  23 import java.util.LinkedList;
  24 import java.util.List;
  25 import javax.annotation.PostConstruct;
  26 import javax.cache.Cache;
  27 import javax.ejb.EJB;
  28 import javax.enterprise.context.RequestScoped;
  29 import javax.enterprise.event.Observes;
  30 import javax.inject.Inject;
  31 import javax.inject.Named;
  32 import org.mxchange.jfinancials.beans.BaseFinancialsBean;
  33 import org.mxchange.jphone.events.mobileprovider.added.AdminAddedMobileProviderEvent;
  34 import org.mxchange.jphone.model.phonenumbers.mobileprovider.MobileProvider;
  35 import org.mxchange.jphone.model.phonenumbers.mobileprovider.MobileProviderSingletonBeanRemote;
  36
  37 /**
  38  * A general bean for mobile providers
  39  * <p>
  40  * @author Roland Häder<roland@mxchange.org>
  41  */
  42 @Named ("mobileProviderController")
  43 @RequestScoped
  44 public class FinancialsMobileProviderWebRequestBean extends BaseFinancialsBean implements FinancialsMobileProviderWebRequestController {
  45
  46         /**
  47          * Serial number
  48          */
  49         private static final long serialVersionUID = 15_869_423_671_950_276L;
  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/jfinancials-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 Cache<Long, MobileProvider> mobileProviderCache;
  73
  74         /**
  75          * Default constructor
  76          */
  77         public FinancialsMobileProviderWebRequestBean () {
  78                 // Call super constructor
  79                 super();
  80
  81                 // Init list
  82                 this.allMobileProviders = new LinkedList<>();
  83         }
  84
  85         /**
  86          * Observes events being fired after the administrator has added a new
  87          * mobile provider
  88          * <p>
  89          * @param event Event being fired
  90          */
  91         public void afterAdminAddedMobileProviderEvent (@Observes final AdminAddedMobileProviderEvent event) {
  92                 // Is all valid?
  93                 if (null == event) {
  94                         // Throw NPE
  95                         throw new NullPointerException("event is null"); //NOI18N
  96                 } else if (event.getAddedMobileProvider() == null) {
  97                         // Throw again ...
  98                         throw new NullPointerException("event.addedMobileProvider is null"); //NOI18N
  99                 } else if (event.getAddedMobileProvider().getProviderId() == null) {
 100                         // And again ...
 101                         throw new NullPointerException("event.addedMobileProvider.providerId is null"); //NOI18N
 102                 } else if (event.getAddedMobileProvider().getProviderId() < 1) {
 103                         // Id is invalid
 104                         throw new IllegalArgumentException(MessageFormat.format("event.addedMobileProvider.providerId={0} is not valid.", event.getAddedMobileProvider().getProviderId())); //NOI18N
 105                 }
 106
 107                 // Add it to the list
 108                 this.mobileProviderCache.put(event.getAddedMobileProvider().getProviderId(), event.getAddedMobileProvider());
 109                 this.allMobileProviders.add(event.getAddedMobileProvider());
 110         }
 111
 112         @Override
 113         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 114         public List<MobileProvider> allMobileProviders () {
 115                 // Return it
 116                 return this.allMobileProviders;
 117         }
 118
 119         /**
 120          * Getter for filtered mobile provider list
 121          * <p>
 122          * @return Filtered mobile providers
 123          */
 124         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 125         public List<MobileProvider> getFilteredMobileProviders () {
 126                 return this.filteredMobileProviders;
 127         }
 128
 129         /**
 130          * Getter for filtered mobile provider list
 131          * <p>
 132          * @param filteredMobileProviders Filtered mobile providers
 133          */
 134         @SuppressWarnings ("AssignmentToCollectionOrArrayFieldFromParameter")
 135         public void setFilteredMobileProviders (final List<MobileProvider> filteredMobileProviders) {
 136                 this.filteredMobileProviders = filteredMobileProviders;
 137         }
 138
 139         /**
 140          * Post-construction method
 141          */
 142         @PostConstruct
 143         public void initCache () {
 144                 // Is cache there?
 145                 if (!this.mobileProviderCache.iterator().hasNext()) {
 146                         // Get whole list
 147                         final List<MobileProvider> mobileProviders = this.mobileProviderBean.allMobileProviders();
 148
 149                         // Add all
 150                         for (final MobileProvider mobileProvider : mobileProviders) {
 151                                 // Add it to cache
 152                                 this.mobileProviderCache.put(mobileProvider.getProviderId(), mobileProvider);
 153                         }
 154                 }
 155
 156                 // Is the list empty, but filled cache?
 157                 if (this.allMobileProviders.isEmpty() && this.mobileProviderCache.iterator().hasNext()) {
 158                         // Get iterator
 159                         final Iterator<Cache.Entry<Long, MobileProvider>> iterator = this.mobileProviderCache.iterator();
 160
 161                         // Build up list
 162                         while (iterator.hasNext()) {
 163                                 // GEt next element
 164                                 final Cache.Entry<Long, MobileProvider> next = iterator.next();
 165
 166                                 // Add to list
 167                                 this.allMobileProviders.add(next.getValue());
 168                         }
 169
 170                         // Sort list
 171                         this.allMobileProviders.sort(new Comparator<MobileProvider>() {
 172                                 @Override
 173                                 public int compare (final MobileProvider o1, final MobileProvider o2) {
 174                                         return o1.getProviderId() > o2.getProviderId() ? 1 : o1.getProviderId() < o2.getProviderId() ? -1 : 0;
 175                                 }
 176                         });
 177                 }
 178         }
 179 }