src/org/mxchange/addressbook/application/AddressbookApplication.java

   1 /*
   2  * Copyright (C) 2015 Roland Haeder
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (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 General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.addressbook.application;
  18
  19 import java.io.IOException;
  20 import java.sql.SQLException;
  21 import java.text.MessageFormat;
  22 import javax.naming.Context;
  23 import javax.naming.InitialContext;
  24 import javax.naming.NamingException;
  25 import org.mxchange.addressbook.client.AddressbookClient;
  26 import org.mxchange.addressbook.client.console.ConsoleClient;
  27 import org.mxchange.addressbook.client.gui.SwingClient;
  28 import org.mxchange.jcore.application.Application;
  29 import org.mxchange.jcore.application.BaseApplication;
  30 import org.mxchange.jcore.client.Client;
  31 import org.mxchange.jcore.exceptions.MenuInitializationException;
  32 import org.mxchange.jcore.exceptions.UnhandledUserChoiceException;
  33 import org.mxchange.jcore.manager.application.ApplicationManager;
  34 import org.mxchange.jcoreeelogger.beans.local.logger.Log;
  35 import org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal;
  36
  37 /**
  38  * Address book application class. Please see ROADMAP.txt for details.
  39  * <p>
  40  * @author Roland Haeder
  41  * @version 0.0
  42  */
  43 public class AddressbookApplication extends BaseApplication implements Application {
  44
  45         /**
  46          * Application title
  47          */
  48         public static final String APP_TITLE = "Adressbuch"; //NOI18N
  49
  50         /**
  51          * Application version
  52          */
  53         public static final String APP_VERSION = "0.0"; //NOI18N
  54
  55         /**
  56          * Console client is enabled by default
  57          */
  58         private boolean consoleClient = true;
  59
  60         /**
  61          * GUI client is disabled by default
  62          */
  63         private boolean guiClient = false;
  64
  65         /**
  66          * Logger instance
  67          */
  68         @Log
  69         private LoggerBeanLocal logger;
  70
  71         /**
  72          * Protected constructor
  73          */
  74         protected AddressbookApplication () {
  75                 // Try this
  76                 try {
  77                         // Get context
  78                         Context context = new InitialContext();
  79
  80                         // Get logger
  81                         this.logger = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal");
  82                 } catch (final NamingException ex) {
  83                         // Output it and exit
  84                         System.err.println(MessageFormat.format("Cannot initialize: {0}", ex));
  85
  86                         // Abort here
  87                         System.exit(1);
  88                 }
  89
  90                 // Call init method
  91                 this.init();
  92         }
  93
  94         /**
  95          * Main method (entry point)
  96          * <p>
  97          * @param args the command line arguments
  98          */
  99         public static void main (String[] args) {
 100                 // Start application
 101                 new AddressbookApplication().start(args);
 102         }
 103
 104         /**
 105          * Getter for printable application name
 106          * <p>
 107          * @return A printable name
 108          */
 109         public static String printableTitle () {
 110                 return MessageFormat.format("{0} v{1}", APP_TITLE, APP_VERSION); //NOI18N
 111         }
 112
 113         @Override
 114         public void doBootstrap () {
 115                 this.getLogger().logDebug("Initializing application ..."); //NOI18N
 116
 117                 // Init client variable
 118                 Client client = null;
 119
 120                 // Is console or Swing choosen?
 121                 if (this.isConsole()) {
 122                         // Debug message
 123                         this.getLogger().logDebug("Initializing console client ..."); //NOI18N
 124
 125                         // Init console client instance
 126                         client = new ConsoleClient(this);
 127                 } else if (this.isGui()) {
 128                         // Debug message
 129                         this.getLogger().logDebug("Initializing GUI (Swing) client ..."); //NOI18N
 130
 131                         // Init console instance
 132                         client = new SwingClient(this);
 133                 } else {
 134                         // Not client choosen
 135                         this.getLogger().logError("No client choosen. Cannot launch."); //NOI18N
 136
 137                         try {
 138                                 this.doShutdown();
 139                         } catch (final SQLException | IOException ex) {
 140                                 // Abort here
 141                                 this.abortProgramWithException(ex);
 142                         }
 143
 144                         // Bye ...
 145                         System.exit(1);
 146                 }
 147
 148                 // Init client
 149                 client.init();
 150
 151                 // Set client instance
 152                 this.setClient(client);
 153
 154                 // The application is running at this point
 155                 this.getClient().enableIsRunning();
 156
 157                 // Trace message
 158                 this.getLogger().logTrace("EXIT!"); //NOI18N
 159         }
 160
 161         @Override
 162         public void doMainLoop () throws MenuInitializationException {
 163                 // Get client and cast it
 164                 AddressbookClient client = (AddressbookClient) this.getClient();
 165
 166                 // Debug message
 167                 this.getLogger().logTrace("CALLED!"); //NOI18N
 168
 169                 // TODO The application should be running now
 170                 // Output introduction
 171                 this.showIntro();
 172
 173                 // Set current menu to main
 174                 client.setCurrentMenu("main"); //NOI18N
 175
 176                 // --- Main loop starts here ---
 177                 while (this.getClient().isRunning()) {
 178                         // The application is still active, show menu selection
 179                         client.showCurrentMenu();
 180
 181                         try {
 182                                 // Ask for user input and run proper method
 183                                 client.doUserMenuChoice();
 184                         } catch (final UnhandledUserChoiceException ex) {
 185                                 // Log exception
 186                                 this.getLogger().logException(ex);
 187                         }
 188
 189                         try {
 190                                 // Sleep a little to reduce system load
 191                                 Thread.sleep(100);
 192                         } catch (final InterruptedException ex) {
 193                                 // Ignore it
 194                         }
 195                 }
 196                 // --- Main loop ends here ---
 197
 198                 // Debug message
 199                 this.getLogger().logDebug("Main loop exit - shutting down ..."); //NOI18N
 200         }
 201
 202         /**
 203          * Shuts down the application.
 204          */
 205         @Override
 206         public void doShutdown () throws SQLException, IOException {
 207                 // Trace message
 208                 this.getLogger().logTrace("CALLED!"); //NOI18N
 209
 210                 // Shutdown client
 211                 this.getClient().doShutdown();
 212
 213                 // Regular exit reached
 214                 this.getLogger().logInfo("End of program (last line)"); //NOI18N
 215                 System.exit(0);
 216         }
 217
 218         /**
 219          * Enables console client by setting propper flag
 220          */
 221         private void enableConsoleClient () {
 222                 this.getLogger().logDebug("Enabling console client (may become optional client) ..."); //NOI18N
 223                 this.consoleClient = true;
 224                 this.guiClient = false;
 225         }
 226
 227         /**
 228          * Enables GUI client by setting propper flag
 229          */
 230         private void enableGuiClient () {
 231                 this.getLogger().logDebug("Enabling GUI client (may become new default client) ..."); //NOI18N
 232                 this.consoleClient = false;
 233                 this.guiClient = true;
 234         }
 235
 236         /**
 237          * Initializes this application
 238          */
 239         private void init () {
 240                 // Try this
 241                 try {
 242                         // Init properties file
 243                         this.initProperties();
 244                 } catch (final IOException ex) {
 245                         // Abort here
 246                         this.abortProgramWithException(ex);
 247                 }
 248
 249                 // Is the bundle initialized?
 250                 if (!isBundledInitialized()) {
 251                         // Temporary initialize default bundle
 252                         // TODO The enum Gender uses this
 253                         this.initBundle();
 254                 }
 255         }
 256
 257         /**
 258          * Initializes properties
 259          */
 260         private void initProperties () throws IOException {
 261                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
 262         }
 263
 264         /**
 265          * Checks whether the client shoule be console client should be launched by
 266          * checking if -console is set.
 267          * <p>
 268          * @return Whether console client should be taken
 269          */
 270         private boolean isConsole () {
 271                 return this.consoleClient;
 272         }
 273
 274         /**
 275          * Checks whether the client shoule be GUI client should be launched by
 276          * checking if -gui is set.
 277          * <p>
 278          * @return Whether GUI client should be taken
 279          */
 280         private boolean isGui () {
 281                 return this.guiClient;
 282         }
 283
 284         /**
 285          * Parses all given arguments
 286          * <p>
 287          * @param args Arguments from program launch
 288          */
 289         private void parseArguments (final String[] args) {
 290                 // Trace message
 291                 this.getLogger().logTrace(MessageFormat.format("args()={0} - CALLED!", args.length)); //NOI18N
 292
 293                 // Debug message
 294                 this.getLogger().logDebug(MessageFormat.format("Parsing {0} arguments ...", args.length)); //NOI18N
 295
 296                 for (final String arg : args) {
 297                         // Switch on it
 298                         switch (arg) {
 299                                 case "-console": //NOI18N
 300                                         enableConsoleClient();
 301                                         break;
 302
 303                                 case "-gui": //NOI18N
 304                                         enableGuiClient();
 305                                         break;
 306                         }
 307                 }
 308         }
 309
 310         /**
 311          * Show introduction which depends on client
 312          */
 313         private void showIntro () {
 314                 // Trace message
 315                 this.getLogger().logTrace("CALLED!"); //NOI18N
 316
 317                 // Let the client show it
 318                 this.getClient().showWelcome();
 319
 320                 // Trace message
 321                 this.getLogger().logTrace("EXIT!"); //NOI18N
 322         }
 323
 324         /**
 325          * Launches the application
 326          * <p>
 327          * @param args Arguments handled to program
 328          */
 329         private void start (final String args[]) {
 330                 this.getLogger().logInfo("Program is started."); //NOI18N
 331
 332                 try {
 333                         // Init properties file
 334                         this.initProperties();
 335                 } catch (final IOException ex) {
 336                         // Something bad happened
 337                         this.abortProgramWithException(ex);
 338                 }
 339
 340                 // Parse arguments
 341                 this.parseArguments(args);
 342
 343                 try {
 344                         // Launch application
 345                         ApplicationManager.getSingeltonManager(this).start();
 346                 } catch (final MenuInitializationException ex) {
 347                         // Something bad happened
 348                         this.abortProgramWithException(ex);
 349                 }
 350
 351                 // Good bye, but this should not be reached ...
 352                 this.getLogger().logWarning("Unusual exit reached."); //NOI18N
 353
 354                 try {
 355                         this.doShutdown();
 356                 } catch (final SQLException | IOException ex) {
 357                         // Something bad happened
 358                         this.abortProgramWithException(ex);
 359                 }
 360         }
 361
 362         /**
 363          * Log exception and abort program.
 364          * <p>
 365          * @param throwable Throwable
 366          */
 367         protected void abortProgramWithException (final Throwable throwable) {
 368                 // Log exception
 369                 this.logException(throwable);
 370
 371                 // Abort here
 372                 System.exit(1);
 373         }
 374
 375         /**
 376          * Getter for logger instance
 377          * <p>
 378          * @return Logger instance
 379          */
 380         protected LoggerBeanLocal getLogger () {
 381                 return this.logger;
 382         }
 383
 384         /**
 385          * Logs given exception
 386          * <p>
 387          * @param exception Throwable
 388          */
 389         protected void logException (final Throwable exception) {
 390                 this.getLogger().logException(exception);
 391         }
 392
 393 }