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.exceptions.AddressbookNotFoundException;
  29 import org.mxchange.addressbook.model.addressbook.Addressbook;
  30 import org.mxchange.addressbook.model.addressbook.AddressbookSessionBeanRemote;
  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
  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         @Override
  60         public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
  61                 // Trace message
  62                 this.loggerBeanLocal.logTrace(MessageFormat.format("validate: context={0},component={1},value={2} - CALLED!", context, component, value)); //NOI18N
  63
  64                 // All accepted, required fields
  65                 String[] requiredFileds = {"addressbookId"}; //NOI18N
  66
  67                 // Pre-validation (example: not null, not a string, empty string ...)
  68                 super.preValidate(context, component, value, requiredFileds, false);
  69
  70                 // Cast to long
  71                 Long addressbookId = (Long) value;
  72
  73                 // Is the address book id valid?
  74                 if (!this.addressbookBean.isAddressbookIdUsed(addressbookId)) {
  75                         // Is not valid
  76                         throw new ValidatorException(new FacesMessage(MessageFormat.format("No address book found with id {0}. Please check your link.", addressbookId))); //NOI18N
  77                 }
  78
  79                 // Init variable
  80                 Addressbook addressbook;
  81
  82                 // Try it
  83                 try {
  84                         // Get full data
  85                         addressbook = this.addressbookBean.getAddressbookById(addressbookId);
  86
  87                         // Is it set?
  88                         if (addressbook == null) {
  89                                 // Is null?!
  90                                 throw new NullPointerException(MessageFormat.format("addressbook for id={0} is null", addressbookId)); //NOI18N
  91                         }
  92                 } catch (final AddressbookNotFoundException ex) {
  93                         // Continue to throw
  94                         throw new ValidatorException(new FacesMessage(MessageFormat.format("Cannot find address book with id {0}", addressbookId)), ex); //NOI18N
  95                 }
  96
  97                 // Trace message
  98                 this.loggerBeanLocal.logTrace("validate: EXIT!"); //NOI18N
  99         }
 100
 101         /**
 102          * Public consutructor
 103          */
 104         public AddressbookIdValidator () {
 105                 // Try to get it
 106                 try {
 107                         // Get initial context
 108                         Context context = new InitialContext();
 109
 110                         // Lookup logger
 111                         this.loggerBeanLocal = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal"); //NOI18N
 112
 113                         // ... and user controller
 114                         this.addressbookBean = (AddressbookSessionBeanRemote) context.lookup("java:global/addressbook-ejb/addressbook!org.mxchange.addressbook.model.addressbook.AddressbookSessionBeanRemote"); //NOI18N
 115                 } catch (final NamingException ex) {
 116                         // Continue to throw it
 117                         throw new RuntimeException("context.lookup() failed.", ex); //NOI18N
 118                 }
 119         }
 120 }