src/org/mxchange/addressbook/validator/addressbook/AddressbookIdValidator.java

   1 /*
   2  * Copyright (C) 2016 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.validator.addressbook;
  18
  19 import java.text.MessageFormat;
  20 import javax.faces.application.FacesMessage;
  21 import javax.faces.component.UIComponent;
  22 import javax.faces.context.FacesContext;
  23 import javax.faces.validator.FacesValidator;
  24 import javax.faces.validator.ValidatorException;
  25 import javax.naming.Context;
  26 import javax.naming.InitialContext;
  27 import javax.naming.NamingException;
  28 import org.mxchange.addressbook.model.addressbook.AddressbookSessionBeanRemote;
  29 import org.mxchange.jaddressbookcore.exceptions.AddressbookNotFoundException;
  30 import org.mxchange.jaddressbookcore.model.addressbook.Addressbook;
  31 import org.mxchange.jcoreee.validator.number.BaseLongValidator;
  32 import org.mxchange.jcoreeelogger.beans.local.logger.Log;
  33 import org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal;
  34
  35 /**
  36  * A validator for address book id verification
  37  * <p>
  38  * @author Roland Haeder<roland@mxchange.org>
  39  */
  40 @FacesValidator (value = "AddressbookIdValidator")
  41 public class AddressbookIdValidator extends BaseLongValidator {
  42
  43         /**
  44          * Serial number
  45          */
  46         private static final long serialVersionUID = 158_768_467_186_951_809L;
  47
  48         /**
  49          * Remote bean
  50          */
  51         private AddressbookSessionBeanRemote addressbookBean;
  52
  53         /**
  54          * Logger instance
  55          */
  56         @Log
  57         private LoggerBeanLocal loggerBeanLocal;
  58
  59         /**
  60          * Public consutructor
  61          */
  62         public AddressbookIdValidator () {
  63                 // Try to get it
  64                 try {
  65                         // Get initial context
  66                         Context context = new InitialContext();
  67
  68                         // Lookup logger
  69                         this.loggerBeanLocal = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal"); //NOI18N
  70
  71                         // ... and user controller
  72                         this.addressbookBean = (AddressbookSessionBeanRemote) context.lookup("java:global/addressbook-ejb/addressbook!org.mxchange.addressbook.model.addressbook.AddressbookSessionBeanRemote"); //NOI18N
  73                 } catch (final NamingException ex) {
  74                         // Continue to throw it
  75                         throw new RuntimeException(MessageFormat.format("context.lookup() failed: {0}", ex.getMessage()), ex); //NOI18N
  76                 }
  77         }
  78
  79         @Override
  80         public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
  81                 // Trace message
  82                 this.loggerBeanLocal.logTrace(MessageFormat.format("validate: context={0},component={1},value={2} - CALLED!", context, component, value)); //NOI18N
  83
  84                 // All accepted, required fields
  85                 String[] requiredFields = {"addressbookId"}; //NOI18N
  86
  87                 // Pre-validation (example: not null, not a string, empty string ...)
  88                 super.preValidate(context, component, value, requiredFields, false);
  89
  90                 // Cast to long
  91                 Long addressbookId = (Long) value;
  92
  93                 // Is the address book id valid?
  94                 if (!this.addressbookBean.isAddressbookIdUsed(addressbookId)) {
  95                         // Is not valid
  96                         throw new ValidatorException(new FacesMessage(MessageFormat.format("No address book found with id {0}. Please check your link.", addressbookId))); //NOI18N
  97                 }
  98
  99                 // Init variable
 100                 Addressbook addressbook;
 101
 102                 // Try it
 103                 try {
 104                         // Get full data
 105                         addressbook = this.addressbookBean.getAddressbookById(addressbookId);
 106
 107                         // Is it set?
 108                         if (null == addressbook) {
 109                                 // Is null?!
 110                                 throw new NullPointerException(MessageFormat.format("addressbook for id={0} is null", addressbookId)); //NOI18N
 111                         }
 112                 } catch (final AddressbookNotFoundException ex) {
 113                         // Continue to throw
 114                         throw new ValidatorException(new FacesMessage(MessageFormat.format("Cannot find address book with id {0}", addressbookId)), ex); //NOI18N
 115                 }
 116
 117                 // Trace message
 118                 this.loggerBeanLocal.logTrace("validate: EXIT!"); //NOI18N
 119         }
 120 }