src/java/org/mxchange/jjobs/validator/emailaddress/JobsEmailAddressValidator.java

   1 /*
   2  * Copyright (C) 2016, 2017 Roland Häder
   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.jjobs.validator.emailaddress;
  18
  19 import java.text.MessageFormat;
  20 import java.util.regex.Pattern;
  21 import javax.faces.application.FacesMessage;
  22 import javax.faces.component.UIComponent;
  23 import javax.faces.context.FacesContext;
  24 import javax.faces.convert.ConverterException;
  25 import javax.faces.validator.FacesValidator;
  26 import javax.faces.validator.Validator;
  27 import javax.faces.validator.ValidatorException;
  28 import javax.naming.Context;
  29 import javax.naming.InitialContext;
  30 import javax.naming.NamingException;
  31 import org.mxchange.jcontacts.contact.ContactSessionBeanRemote;
  32 import org.mxchange.jcoreee.validator.string.BaseStringValidator;
  33
  34 /**
  35  * A validator for email address validation
  36  * <p>
  37  * @author Roland Häder<roland@mxchange.org>
  38  */
  39 @FacesValidator ("EmailAddressValidator")
  40 public class JobsEmailAddressValidator extends BaseStringValidator implements Validator {
  41
  42         /**
  43          * Serial number
  44          */
  45         private static final long serialVersionUID = 187_536_745_607_192L;
  46
  47         /**
  48          * Contact session-scoped bean
  49          */
  50         private ContactSessionBeanRemote contactBean;
  51
  52         /**
  53          * Default constructor
  54          */
  55         public JobsEmailAddressValidator () {
  56         }
  57
  58         @Override
  59         public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
  60                 // The required field
  61                 String[] requiredFields = {"emailAddress", "emailAddressRepeat", "resendEmailAddress"}; //NOI18N
  62
  63                 // Pre-validation (example: not null, not a string, empty string ...)
  64                 super.preValidate(context, component, value, requiredFields, false);
  65
  66                 // Get string from object ... ;-)
  67                 // @TODO Add IDN support (GNU lib?) Search for emailAddressRepeat
  68                 String emailAddress = String.valueOf(value);
  69
  70                 // Checks if the email address matches a regex ("low-level" check)
  71                 // @TODO Should also be done by <f:validatorRegex />)
  72                 boolean matches = Pattern.matches("^([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$", emailAddress); //NOI18N
  73
  74                 // Is the email address valid?
  75                 if (!matches) {
  76                         // Generate message
  77                         String message = MessageFormat.format("Email address {0} does not match regular expression.", emailAddress); //NOI18N
  78
  79                         // Not matching
  80                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, message, message));
  81                 }
  82
  83                 synchronized (this) {
  84                         // Is the EJB instanciated?
  85                         if (null == this.contactBean) {
  86                                 // Try it
  87                                 try {
  88                                         // Get initial context
  89                                         Context initialContext = new InitialContext();
  90
  91                                         // Try to lookup
  92                                         this.contactBean = (ContactSessionBeanRemote) initialContext.lookup("java:global/jjobs-ejb/contact!org.mxchange.jcontacts.contact.ContactSessionBeanRemote"); //NOI18N
  93                                 } catch (final NamingException ex) {
  94                                         // Continue to throw it
  95                                         throw new ConverterException(MessageFormat.format("initialContext.lookup() failed: {0}", ex.getMessage()), ex); //NOI18N
  96                                 }
  97                         }
  98                 }
  99
 100                 // Get client id (aka form id)
 101                 String clientId = component.getClientId();
 102
 103                 // Is the email address already registered?
 104                 if ((!clientId.endsWith("resendEmailAddress")) && (this.contactBean.isEmailAddressRegistered(emailAddress))) { //NOI18N
 105                         // Generate message
 106                         String message = MessageFormat.format("Email address {0} is already registered.", emailAddress); //NOI18N
 107
 108                         // No, then abort here
 109                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_INFO, message, message));
 110                 } else if ((clientId.endsWith("resendEmailAddress")) && (!this.contactBean.isEmailAddressRegistered(emailAddress))) { //NOI18N
 111                         // Generate message
 112                         String message = MessageFormat.format("Email address {0} is not registered.", emailAddress); //NOI18N
 113
 114                         // No, then abort here
 115                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_INFO, message, message));
 116                 }
 117         }
 118
 119 }