src/java/org/mxchange/addressbook/validator/emailaddress/AddressbookEmailAddressValidator.java

   1 /*
   2  * Copyright (C) 2016 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.addressbook.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.validator.FacesValidator;
  25 import javax.faces.validator.Validator;
  26 import javax.faces.validator.ValidatorException;
  27 import javax.faces.view.facelets.FaceletException;
  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 AddressbookEmailAddressValidator 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 final ContactSessionBeanRemote contactBean;
  51
  52         /**
  53          * Default constructor
  54          */
  55         public AddressbookEmailAddressValidator () {
  56                 // Try it
  57                 try {
  58                         // Get initial context
  59                         Context context = new InitialContext();
  60
  61                         // Try to lookup
  62                         this.contactBean = (ContactSessionBeanRemote) context.lookup("java:global/addressbook-ejb/contact!org.mxchange.jcontacts.contact.ContactSessionBeanRemote"); //NOI18N
  63                 } catch (final NamingException e) {
  64                         // Throw again
  65                         throw new FaceletException(e);
  66                 }
  67         }
  68
  69         @Override
  70         public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
  71                 // The required field
  72                 String[] requiredFields = {"emailAddress", "emailAddressRepeat", "resendEmailAddress"}; //NOI18N
  73
  74                 // Pre-validation (example: not null, not a string, empty string ...)
  75                 super.preValidate(context, component, value, requiredFields, false);
  76
  77                 // Get string from object ... ;-)
  78                 // @TODO Add IDN support (GNU lib?) Search for emailAddressRepeat
  79                 String emailAddress = String.valueOf(value);
  80
  81                 // Checks if the email address matches a regex ("low-level" check)
  82                 // @TODO Should also be done by <f:validatorRegex />)
  83                 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
  84
  85                 // Is the email address valid?
  86                 if (!matches) {
  87                         // Generate message
  88                         String message = MessageFormat.format("Email address {0} does not match regular expression.", emailAddress); //NOI18N
  89
  90                         // Not matching
  91                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, message, message));
  92                 }
  93
  94                 // Get client id (aka form id)
  95                 String clientId = component.getClientId();
  96
  97                 // Is the email address already registered?
  98                 if ((!clientId.endsWith("resendEmailAddress")) && (this.contactBean.isEmailAddressRegistered(emailAddress))) { //NOI18N
  99                         // Generate message
 100                         String message = MessageFormat.format("Email address {0} is already registered.", emailAddress); //NOI18N
 101
 102                         // No, then abort here
 103                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_INFO, message, message));
 104                 } else if ((clientId.endsWith("resendEmailAddress")) && (!this.contactBean.isEmailAddressRegistered(emailAddress))) { //NOI18N
 105                         // Generate message
 106                         String message = MessageFormat.format("Email address {0} is not registered.", emailAddress); //NOI18N
 107
 108                         // No, then abort here
 109                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_INFO, message, message));
 110                 }
 111         }
 112
 113 }