src/java/org/mxchange/addressbook/beans/business/opening_time/list/AddressbookOpeningTimeListWebViewBean.java

   1 /*
   2  * Copyright (C) 2017 - 2024 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.business.opening_time.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.jcontactsbusiness.events.opening_time.added.ObservableOpeningTimeAddedEvent;
  32 import org.mxchange.jcontactsbusiness.exceptions.opening_time.OpeningTimeNotFoundException;
  33 import org.mxchange.jcontactsbusiness.model.opening_time.OpeningTime;
  34 import org.mxchange.jcontactsbusiness.model.opening_time.OpeningTimeSessionBeanRemote;
  35 import org.mxchange.addressbook.beans.BaseAddressbookBean;
  36
  37 /**
  38  * A general bean for opening times
  39  * <p>
  40  * @author Roland Häder<roland@mxchange.org>
  41  */
  42 @Named ("openingTimeListController")
  43 @ViewScoped
  44 public class AddressbookOpeningTimeListWebViewBean extends BaseAddressbookBean implements AddressbookOpeningTimeListWebViewController {
  45
  46         /**
  47          * Serial number
  48          */
  49         private static final long serialVersionUID = 5_028_697_360_467L;
  50
  51         /**
  52          * A list of all opening times
  53          */
  54         private final List<OpeningTime> allOpeningTimes;
  55
  56         /**
  57          * A list of filtered opening times
  58          */
  59         private List<OpeningTime> filteredOpeningTimes;
  60
  61         /**
  62          * EJB for administrative purposes
  63          */
  64         @EJB (lookup = "java:global/addressbook-ejb/openingTimes!org.mxchange.jcontactsbusiness.model.opening_time.OpeningTimeSessionBeanRemote")
  65         private OpeningTimeSessionBeanRemote openingTimesBean;
  66
  67         /**
  68          * A list of all opening times (globally)
  69          */
  70         @Inject
  71         @NamedCache (cacheName = "openingTimesCache")
  72         private transient Cache<Long, OpeningTime> openingTimesCache;
  73
  74         /**
  75          * Selected opening-time instance
  76          */
  77         private OpeningTime selectedOpeningTime;
  78
  79         /**
  80          * Default constructor
  81          */
  82         public AddressbookOpeningTimeListWebViewBean () {
  83                 // Call super constructor
  84                 super();
  85
  86                 // Init list
  87                 this.allOpeningTimes = new LinkedList<>();
  88         }
  89
  90         /**
  91          * Observes events being thrown when a new opening time has been added
  92          * <p>
  93          * @param event Event being fired
  94          */
  95         public void afterOpeningTimeAddedEvent (@Observes final ObservableOpeningTimeAddedEvent event) {
  96                 // Validate parameter
  97                 if (null == event) {
  98                         // Throw NPE
  99                         throw new NullPointerException("event is null");
 100                 } else if (event.getOpeningTime() == null) {
 101                         // Throw it again
 102                         throw new NullPointerException("event.openingTime is null");
 103                 } else if (event.getOpeningTime().getOpeningTimeId() == null) {
 104                         // Throw it again
 105                         throw new NullPointerException("event.openingTime.openingTimeId is null");
 106                 } else if (event.getOpeningTime().getOpeningTimeId() < 1) {
 107                         // Throw it again
 108                         throw new NullPointerException(MessageFormat.format("event.openingTime.openingTimeId={0} is invalid", event.getOpeningTime().getOpeningTimeId()));
 109                 }
 110
 111                 // Add to cache and list
 112                 this.openingTimesCache.put(event.getOpeningTime().getOpeningTimeId(), event.getOpeningTime());
 113                 this.getAllOpeningTimes().add(event.getOpeningTime());
 114         }
 115
 116         @Override
 117         public OpeningTime findOpeningTimeById (final Long openingTimeId) throws OpeningTimeNotFoundException {
 118                 // Validate parameter
 119                 if (null == openingTimeId) {
 120                         // Throw NPE
 121                         throw new NullPointerException("openingTimeId is null"); //NOI18N
 122                 } else if (openingTimeId < 1) {
 123                         // Throw IAE
 124                         throw new IllegalArgumentException("openingTimeId=" + openingTimeId + " is invalid"); //NOI18N
 125                 } else if (!this.openingTimesCache.containsKey(openingTimeId)) {
 126                         // Not found
 127                         throw new OpeningTimeNotFoundException(openingTimeId);
 128                 }
 129
 130                 // Get it from cache
 131                 final OpeningTime opening = this.openingTimesCache.get(openingTimeId);
 132
 133                 // Return it
 134                 return opening;
 135         }
 136
 137         /**
 138          * Returns a list of all opening times
 139          * <p>
 140          * @return A list of all opening times
 141          */
 142         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 143         public List<OpeningTime> getAllOpeningTimes () {
 144                 return this.allOpeningTimes;
 145         }
 146
 147         /**
 148          * Getter for a list of filtered opening times
 149          * <p>
 150          * @return Filtered opening times
 151          */
 152         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 153         public List<OpeningTime> getFilteredOpeningTimes () {
 154                 return this.filteredOpeningTimes;
 155         }
 156
 157         /**
 158          * Setter for a list of filtered opening times
 159          * <p>
 160          * @param filteredOpeningTimes Filtered opening times
 161          */
 162         @SuppressWarnings ("AssignmentToCollectionOrArrayFieldFromParameter")
 163         public void setFilteredOpeningTimes (final List<OpeningTime> filteredOpeningTimes) {
 164                 this.filteredOpeningTimes = filteredOpeningTimes;
 165         }
 166
 167         /**
 168          * Getter for selected open-time instance
 169          * <p>
 170          * @return Selected open-time instance
 171          */
 172         public OpeningTime getSelectedOpeningTime () {
 173                 return this.selectedOpeningTime;
 174         }
 175
 176         /**
 177          * Setter for selected open-time instance
 178          * <p>
 179          * @param selectedOpeningTime Selected open-time instance
 180          */
 181         public void setSelectedOpeningTime (final OpeningTime selectedOpeningTime) {
 182                 this.selectedOpeningTime = selectedOpeningTime;
 183         }
 184
 185         /**
 186          * Initializer method
 187          */
 188         @PostConstruct
 189         public void initializeList () {
 190                 // Is cache there?
 191                 if (!this.openingTimesCache.iterator().hasNext()) {
 192                         // Add all
 193                         for (final OpeningTime openingTime : this.openingTimesBean.fetchAllOpeningTimes()) {
 194                                 // Add it to cache
 195                                 this.openingTimesCache.put(openingTime.getOpeningTimeId(), openingTime);
 196                         }
 197                 }
 198
 199                 // Is the list empty, but filled cache?
 200                 if (this.getAllOpeningTimes().isEmpty() && this.openingTimesCache.iterator().hasNext()) {
 201                         // Build up list
 202                         for (final Cache.Entry<Long, OpeningTime> currentEntry : this.openingTimesCache) {
 203                                 // Add to list
 204                                 this.getAllOpeningTimes().add(currentEntry.getValue());
 205                         }
 206
 207                         // Sort list
 208                         this.getAllOpeningTimes().sort(new Comparator<OpeningTime>() {
 209                                 @Override
 210                                 public int compare (final OpeningTime openingTime1, final OpeningTime openingTime2) {
 211                                         return openingTime1.getOpeningTimeId() > openingTime2.getOpeningTimeId() ? 1 : openingTime1.getOpeningTimeId() < openingTime2.getOpeningTimeId() ? -1 : 0;
 212                                 }
 213                         }
 214                         );
 215                 }
 216         }
 217
 218 }