src/java/org/mxchange/jjobs/validator/emailaddress/basicdata/JobsBasicDataEmailAddressValidator.java

   1 /*
   2  * Copyright (C) 2016 - 2020 Free Software Foundation
   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.basicdata;
  18
  19 import java.text.MessageFormat;
  20 import java.util.regex.Pattern;
  21 import javax.enterprise.inject.spi.CDI;
  22 import javax.faces.application.FacesMessage;
  23 import javax.faces.component.UIComponent;
  24 import javax.faces.context.FacesContext;
  25 import javax.faces.validator.FacesValidator;
  26 import javax.faces.validator.ValidatorException;
  27 import org.mxchange.jcoreee.validator.string.BaseStringValidator;
  28 import org.mxchange.jjobs.beans.business.basicdata.list.JobsBasicDataListWebViewBean;
  29 import org.mxchange.jjobs.beans.business.basicdata.list.JobsBasicDataListWebViewController;
  30
  31 /**
  32  * A validator for basic company data email address validation
  33  * <p>
  34  * @author Roland Häder<roland@mxchange.org>
  35  */
  36 @FacesValidator (value = "BasicDataEmailAddressValidator")
  37 public class JobsBasicDataEmailAddressValidator extends BaseStringValidator {
  38
  39         /**
  40          * Basic company data backing bean
  41          */
  42         private static JobsBasicDataListWebViewController BASIC_DATA_LIST_CONTROLLER;
  43
  44         /**
  45          * Email pattern
  46          */
  47         private static final String EMAIL_REGEX = "^([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})(\\]?)$"; //NOI18N
  48
  49         /**
  50          * Pattern matcher
  51          */
  52         private static final Pattern PATTERN_MATCHER = Pattern.compile(JobsBasicDataEmailAddressValidator.EMAIL_REGEX);
  53
  54         /**
  55          * Serial number
  56          */
  57         private static final long serialVersionUID = 187_536_745_607_195L;
  58
  59         /**
  60          * Whether empty data is allowed
  61          */
  62         private Boolean allowEmptyRequiredData;
  63
  64         /**
  65          * Default constructor
  66          */
  67         public JobsBasicDataEmailAddressValidator () {
  68                 this.allowEmptyRequiredData = Boolean.FALSE;
  69         }
  70
  71         /**
  72          * Setter for allowEmptyRequiredData flag
  73          * <p>
  74          * @param allowEmptyRequiredData Whether empty values are allowed
  75          */
  76         public void setAllowEmptyRequiredData (final Boolean allowEmptyRequiredData) {
  77                 this.allowEmptyRequiredData = allowEmptyRequiredData;
  78         }
  79
  80         @Override
  81         public void validate (final FacesContext context, final UIComponent component, final Object value) throws ValidatorException {
  82                 // The required field
  83                 final String[] requiredFields = {"emailAddress", "emailAddressRepeat", "resendEmailAddress"}; //NOI18N
  84
  85                 // Pre-validation (example: not null, not a string, empty string ...)
  86                 super.preValidate(context, component, value, requiredFields, this.allowEmptyRequiredData);
  87
  88                 // Is the email address empty and allowed?
  89                 if (null == value && this.allowEmptyRequiredData) {
  90                         // Then accept this here
  91                         return;
  92                 } else if (null == value) {
  93                         // Abort here
  94                         throw new ValidatorException(new FacesMessage("No empty email address allowed.")); //NOI18N
  95                 }
  96
  97                 // Get string from object ... ;-)
  98                 // @TODO Add IDN support (GNU lib?) Search for emailAddressRepeat
  99                 final String emailAddress = String.valueOf(value).trim();
 100
 101                 // Checks if the email address matches a regex ("low-level" check)
 102                 // @TODO Should also be done by <f:validatorRegex />)
 103                 final boolean matches = PATTERN_MATCHER.matcher(emailAddress).matches(); //NOI18N
 104
 105                 // Is the email address valid?
 106                 if (!matches) {
 107                         // Generate message
 108                         String message = MessageFormat.format("Email address {0} does not match regular expression.", emailAddress); //NOI18N
 109
 110                         // Not matching
 111                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_WARN, message, message));
 112                 }
 113
 114                 // Get client id (aka form id)
 115                 final String clientId = component.getClientId();
 116
 117                 // Is the instance there?
 118                 if (null == BASIC_DATA_LIST_CONTROLLER) {
 119                         // Get bean from CDI directly
 120                         BASIC_DATA_LIST_CONTROLLER = CDI.current().select(JobsBasicDataListWebViewBean.class).get();
 121                 }
 122
 123                 // Is it registered?
 124                 final Boolean isRegistered = BASIC_DATA_LIST_CONTROLLER.isEmailAddressRegistered(emailAddress);
 125
 126                 // Is the email address already registered?
 127                 if ((!clientId.endsWith("resendEmailAddress")) && (isRegistered)) { //NOI18N
 128                         // Generate message
 129                         final String message = MessageFormat.format("Email address {0} is already registered.", emailAddress); //NOI18N
 130
 131                         // No, then abort here
 132                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_INFO, message, message));
 133                 } else if ((clientId.endsWith("resendEmailAddress")) && (!isRegistered)) { //NOI18N
 134                         // Generate message
 135                         final String message = MessageFormat.format("Email address {0} is not registered.", emailAddress); //NOI18N
 136
 137                         // No, then abort here
 138                         throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_INFO, message, message));
 139                 }
 140         }
 141
 142 }