git.mxchange.org Git - jfinancials-war.git/blob

   1 /*
   2  * Copyright (C) 2016 - 2018 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.jfinancials.beans.financial.model.receipt_item.list;
  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 java.util.Objects;
  26 import javax.annotation.PostConstruct;
  27 import javax.cache.Cache;
  28 import javax.ejb.EJB;
  29 import javax.enterprise.event.Observes;
  30 import javax.faces.view.ViewScoped;
  31 import javax.inject.Inject;
  32 import javax.inject.Named;
  33 import org.mxchange.jfinancials.beans.BaseFinancialsBean;
  34 import org.mxchange.jfinancials.beans.user.login.FinancialsUserLoginWebSessionController;
  35 import org.mxchange.jfinancials.events.receipt_item.added.ObservableReceiptItemAddedEvent;
  36 import org.mxchange.jfinancials.model.receipt_item.BillableReceiptItem;
  37 import org.mxchange.jfinancials.model.receipt_item.FinancialReceiptItemSessionBeanRemote;
  38 import org.mxchange.juserlogincore.events.login.ObservableUserLoggedInEvent;
  39
  40 /**
  41  * A list financial receipt item bean (controller)
  42  * <p>
  43  * @author Roland Häder<roland@mxchange.org>
  44  */
  45 @Named ("receiptItemListController")
  46 @ViewScoped
  47 public class FinancialsReceiptItemListWebViewBean extends BaseFinancialsBean implements FinancialsReceiptItemListWebViewController {
  48
  49         /**
  50          * Serial number
  51          */
  52         private static final long serialVersionUID = 56_189_028_928_472L;
  53
  54         /**
  55          * All receipt items list
  56          */
  57         private final List<BillableReceiptItem> allReceiptItems;
  58
  59         /**
  60          * Filtered receipt items list
  61          */
  62         private List<BillableReceiptItem> filteredReceiptItems;
  63
  64         /**
  65          * EJB for general financial receipt purposes
  66          */
  67         @EJB (lookup = "java:global/jfinancials-ejb/financialReceiptItem!org.mxchange.jfinancials.model.receipt_item.FinancialReceiptItemSessionBeanRemote")
  68         private FinancialReceiptItemSessionBeanRemote receiptItemBean;
  69
  70         /**
  71          * A list of all branch offices (globally)
  72          */
  73         @Inject
  74         @NamedCache (cacheName = "receiptItemCache")
  75         private transient Cache<Long, BillableReceiptItem> receiptItemCache;
  76
  77         /**
  78          * Selected receipt item
  79          */
  80         private BillableReceiptItem selectedReceiptItem;
  81
  82         /**
  83          * User instance
  84          */
  85         @Inject
  86         private FinancialsUserLoginWebSessionController userLoginController;
  87
  88         /**
  89          * User's receipt items
  90          */
  91         private final List<BillableReceiptItem> userReceiptItems;
  92
  93         /**
  94          * Constructor
  95          */
  96         @SuppressWarnings ("CollectionWithoutInitialCapacity")
  97         public FinancialsReceiptItemListWebViewBean () {
  98                 // Call super constructor
  99                 super();
 100
 101                 // Init lists
 102                 this.allReceiptItems = new LinkedList<>();
 103                 this.userReceiptItems = new LinkedList<>();
 104         }
 105
 106         /**
 107          * Observes events being fired when a new receipt item has been added
 108          * <p>
 109          * @param event Event being fired
 110          */
 111         public void afterAddedReceiptItemEvent (@Observes final ObservableReceiptItemAddedEvent event) {
 112                 // Validate parameter
 113                 if (null == event) {
 114                         // Throw NPE
 115                         throw new NullPointerException("event is null"); //NOI18N
 116                 }
 117
 118                 // Add to cache and general list
 119                 this.receiptItemCache.put(event.getReceiptItem().getItemId(), event.getReceiptItem());
 120                 this.getAllReceiptItems().add(event.getReceiptItem());
 121
 122                 // Is same user?
 123                 if (this.userLoginController.isUserLoggedIn() && Objects.equals(event.getReceiptItem().getItemReceipt().getReceiptUser(), this.userLoginController.getLoggedInUser())) {
 124                         // Same user, then add it
 125                         this.userReceiptItems.add(event.getReceiptItem());
 126                 }
 127         }
 128
 129         /**
 130          * Event observer for logged-in user
 131          * <p>
 132          * @param event Event instance
 133          */
 134         public void afterUserLoginEvent (@Observes final ObservableUserLoggedInEvent event) {
 135                 // event should not be null
 136                 if (null == event) {
 137                         // Throw NPE
 138                         throw new NullPointerException("event is null"); //NOI18N
 139                 } else if (event.getLoggedInUser() == null) {
 140                         // Throw NPE again
 141                         throw new NullPointerException("event.loggedInUser is null"); //NOI18N
 142                 } else if (event.getLoggedInUser().getUserId() == null) {
 143                         // userId is null
 144                         throw new NullPointerException("event.loggedInUser.userId is null"); //NOI18N
 145                 } else if (event.getLoggedInUser().getUserId() < 1) {
 146                         // Not avalid id
 147                         throw new IllegalArgumentException(MessageFormat.format("userId of user={0} is not valid: {1}", event.getLoggedInUser(), event.getLoggedInUser().getUserId())); //NOI18N
 148                 }
 149
 150                 // Fill cache with all found user's receipts
 151                 for (final BillableReceiptItem receiptItem : this.allReceiptItems) {
 152                         // Is same user?
 153                         if (Objects.equals(receiptItem.getItemReceipt().getReceiptUser(), event.getLoggedInUser())) {
 154                                 // Yes, then add it
 155                                 this.userReceiptItems.add(receiptItem);
 156                         }
 157                 }
 158         }
 159
 160         @Override
 161         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 162         public List<BillableReceiptItem> getAllReceiptItems () {
 163                 return this.allReceiptItems;
 164         }
 165
 166         /**
 167          * Getter for filtered receipt items
 168          * <p>
 169          * @return Filtered receipts
 170          */
 171         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 172         public List<BillableReceiptItem> getFilteredReceiptItems () {
 173                 return this.filteredReceiptItems;
 174         }
 175
 176         /**
 177          * Setter for filtered receipt items
 178          * <p>
 179          * @param filteredReceiptItems Filtered receipt items
 180          */
 181         @SuppressWarnings ("AssignmentToCollectionOrArrayFieldFromParameter")
 182         public void setFilteredReceiptItems (final List<BillableReceiptItem> filteredReceiptItems) {
 183                 this.filteredReceiptItems = filteredReceiptItems;
 184         }
 185
 186         /**
 187          * Getter for selected receipt item
 188          * <p>
 189          * @return Selected receipt item
 190          */
 191         public BillableReceiptItem getSelectedReceiptItem () {
 192                 return this.selectedReceiptItem;
 193         }
 194
 195         /**
 196          * Setter for selected receipt item
 197          * <p>
 198          * @param selectedReceiptItem Selected receipt item
 199          */
 200         public void setSelectedReceiptItem (final BillableReceiptItem selectedReceiptItem) {
 201                 this.selectedReceiptItem = selectedReceiptItem;
 202         }
 203
 204         @PostConstruct
 205         public void initCache () {
 206                 // Is cache there?
 207                 if (!this.receiptItemCache.iterator().hasNext()) {
 208                         // Get whole list from EJB
 209                         final List<BillableReceiptItem> receiptItems = this.receiptItemBean.allReceiptItems();
 210
 211                         // Add all
 212                         for (final BillableReceiptItem receiptItem : receiptItems) {
 213                                 // Add it to cache
 214                                 this.receiptItemCache.put(receiptItem.getItemId(), receiptItem);
 215                         }
 216                 }
 217
 218                 // Is the list empty, but filled cache?
 219                 if (this.getAllReceiptItems().isEmpty() && this.receiptItemCache.iterator().hasNext()) {
 220                         // Get iterator
 221                         final Iterator<Cache.Entry<Long, BillableReceiptItem>> iterator = this.receiptItemCache.iterator();
 222
 223                         // Build up list
 224                         while (iterator.hasNext()) {
 225                                 // GEt next element
 226                                 final Cache.Entry<Long, BillableReceiptItem> next = iterator.next();
 227
 228                                 // Add to list
 229                                 this.getAllReceiptItems().add(next.getValue());
 230                         }
 231
 232                         // Sort list
 233                         this.getAllReceiptItems().sort(new Comparator<BillableReceiptItem>() {
 234                                 @Override
 235                                 public int compare (final BillableReceiptItem o1, final BillableReceiptItem o2) {
 236                                         return o1.getItemId() > o2.getItemId() ? 1 : o1.getItemId() < o2.getItemId() ? -1 : 0;
 237                                 }
 238                         }
 239                         );
 240                 }
 241         }
 242
 243         @Override
 244         public boolean isReceiptItemAdded (final BillableReceiptItem receiptItem) {
 245                 // Always trust the cache
 246                 return this.getAllReceiptItems().contains(receiptItem);
 247         }
 248
 249 }