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

   1 /*
   2  * Copyright (C) 2017, 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.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 javax.annotation.PostConstruct;
  26 import javax.cache.Cache;
  27 import javax.ejb.EJB;
  28 import javax.enterprise.event.Observes;
  29 import javax.faces.view.ViewScoped;
  30 import javax.inject.Inject;
  31 import javax.inject.Named;
  32 import org.mxchange.jfinancials.beans.BaseFinancialsBean;
  33 import org.mxchange.jfinancials.events.receipt.added.ObservableReceiptAddedEvent;
  34 import org.mxchange.jfinancials.exceptions.receipt.ReceiptNotFoundException;
  35 import org.mxchange.jfinancials.model.receipt.BillableReceipt;
  36 import org.mxchange.jfinancials.model.receipt.FinancialReceiptSessionBeanRemote;
  37
  38 /**
  39  * A view-scoped bean for receipt lists
  40  * <p>
  41  * @author Roland Haeder<roland@mxchange.org>
  42  */
  43 @Named ("receiptListController")
  44 @ViewScoped
  45 public class FinancialsReceiptListWebViewBean extends BaseFinancialsBean implements FinancialsReceiptListWebViewController {
  46
  47         /**
  48          * Serial number
  49          */
  50         private static final long serialVersionUID = 34_869_872_672_653L;
  51
  52         /**
  53          * All receipts list
  54          */
  55         private final List<BillableReceipt> allReceipts;
  56
  57         /**
  58          * Filtered receipts list
  59          */
  60         private List<BillableReceipt> filteredReceipts;
  61
  62         /**
  63          * EJB for general financial receipt purposes
  64          */
  65         @EJB (lookup = "java:global/jfinancials-ejb/financialReceipt!org.mxchange.jfinancials.model.receipt.FinancialReceiptSessionBeanRemote")
  66         private FinancialReceiptSessionBeanRemote receiptBean;
  67
  68         /**
  69          * A list of all branch offices (globally)
  70          */
  71         @Inject
  72         @NamedCache (cacheName = "receiptCache")
  73         private transient Cache<Long, BillableReceipt> receiptCache;
  74
  75         /**
  76          * Selected receipt
  77          */
  78         private BillableReceipt selectedReceipt;
  79
  80         /**
  81          * Default constructor
  82          */
  83         public FinancialsReceiptListWebViewBean () {
  84                 // Call super constructor
  85                 super();
  86
  87                 // Init lists
  88                 this.allReceipts = new LinkedList<>();
  89         }
  90
  91         /**
  92          * Observes events being fired when a new receipt has been added
  93          * <p>
  94          * @param event Event being fired
  95          */
  96         public void afterAddedReceiptEvent (@Observes final ObservableReceiptAddedEvent event) {
  97                 // Validate parameter
  98                 if (null == event) {
  99                         // Throw NPE
 100                         throw new NullPointerException("event is null"); //NOI18N
 101                 } else if (event.getReceipt() == null) {
 102                         // Throw NPE again
 103                         throw new NullPointerException("event.receipt is null"); //NOI18N
 104                 } else if (event.getReceipt().getReceiptId() == null) {
 105                         // Throw it again
 106                         throw new NullPointerException("event.receipt.receiptId is null"); //NOI18N
 107                 } else if (event.getReceipt().getReceiptId() < 1) {
 108                         // Throw IAE
 109                         throw new IllegalArgumentException(MessageFormat.format("event.receipt.receiptId={0} is invalid", event.getReceipt().getReceiptId())); //NOI18N
 110                 }
 111
 112                 // Add to cache and general list
 113                 this.receiptCache.put(event.getReceipt().getReceiptId(), event.getReceipt());
 114                 this.getAllReceipts().add(event.getReceipt());
 115         }
 116
 117         @Override
 118         public BillableReceipt findReceiptById (final Long receiptId) throws ReceiptNotFoundException {
 119                 // Validate parameter
 120                 if (null == receiptId) {
 121                         // Throw NPE
 122                         throw new NullPointerException("receiptId is null"); //NOI18N
 123                 } else if (receiptId < 1) {
 124                         // Throw IAE
 125                         throw new IllegalArgumentException("receiptId=" + receiptId + " is invalid."); //NOI18N
 126                 } else if (!this.receiptCache.containsKey(receiptId)) {
 127                         // Not found
 128                         throw new ReceiptNotFoundException(receiptId);
 129                 }
 130
 131                 // Get it from cache
 132                 final BillableReceipt receipt = this.receiptCache.get(receiptId);
 133
 134                 // Return it
 135                 return receipt;
 136         }
 137
 138         @Override
 139         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 140         public List<BillableReceipt> getAllReceipts () {
 141                 return this.allReceipts;
 142         }
 143
 144         /**
 145          * Getter for filtered receipts
 146          * <p>
 147          * @return Filtered receipts
 148          */
 149         @SuppressWarnings ("ReturnOfCollectionOrArrayField")
 150         public List<BillableReceipt> getFilteredReceipts () {
 151                 return this.filteredReceipts;
 152         }
 153
 154         /**
 155          * Setter for filtered receipts
 156          * <p>
 157          * @param filteredReceipts Filtered receipts
 158          */
 159         @SuppressWarnings ("AssignmentToCollectionOrArrayFieldFromParameter")
 160         public void setFilteredReceipts (final List<BillableReceipt> filteredReceipts) {
 161                 this.filteredReceipts = filteredReceipts;
 162         }
 163
 164         /**
 165          * Getter for selected receipt
 166          * <P>
 167          * @return Selected receipt
 168          */
 169         public BillableReceipt getSelectedReceipt () {
 170                 return this.selectedReceipt;
 171         }
 172
 173         /**
 174          * Setter for selected receipt
 175          * <P>
 176          * @param selectedReceipt Selected receipt
 177          */
 178         public void setSelectedReceipt (final BillableReceipt selectedReceipt) {
 179                 this.selectedReceipt = selectedReceipt;
 180         }
 181
 182         @PostConstruct
 183         public void initCache () {
 184                 // Is cache there?
 185                 if (!this.receiptCache.iterator().hasNext()) {
 186                         // Get whole list from EJB
 187                         final List<BillableReceipt> receipts = this.receiptBean.allReceipts();
 188
 189                         // Add all
 190                         for (final BillableReceipt receipt : receipts) {
 191                                 // Add it to cache
 192                                 this.receiptCache.put(receipt.getReceiptId(), receipt);
 193                         }
 194                 }
 195
 196                 // Is the list empty, but filled cache?
 197                 if (this.getAllReceipts().isEmpty() && this.receiptCache.iterator().hasNext()) {
 198                         // Get iterator
 199                         final Iterator<Cache.Entry<Long, BillableReceipt>> iterator = this.receiptCache.iterator();
 200
 201                         // Build up list
 202                         while (iterator.hasNext()) {
 203                                 // GEt next element
 204                                 final Cache.Entry<Long, BillableReceipt> next = iterator.next();
 205
 206                                 // Add to list
 207                                 this.getAllReceipts().add(next.getValue());
 208                         }
 209
 210                         // Sort list
 211                         this.getAllReceipts().sort(new Comparator<BillableReceipt>() {
 212                                 @Override
 213                                 public int compare (final BillableReceipt o1, final BillableReceipt o2) {
 214                                         return o1.getReceiptId() > o2.getReceiptId() ? 1 : o1.getReceiptId() < o2.getReceiptId() ? -1 : 0;
 215                                 }
 216                         }
 217                         );
 218                 }
 219         }
 220
 221         @Override
 222         public boolean isReceiptAdded (final BillableReceipt receipt) {
 223                 // Always trust the cache
 224                 return this.getAllReceipts().contains(receipt);
 225         }
 226
 227 }