From: Roland Häder <roland@mxchange.org>
Date: Thu, 22 Jun 2017 20:55:38 +0000 (+0200)
Subject: Please cherry-pick:
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=29d62f6f70bd7cdc474394a20d144f60bbd0ea7e;p=jfinancials-mailer-ejb.git

Please cherry-pick:
- moved EJBs to proper package as they are user-related beans
- handled over randomPassword parameter to sendEmail()
- or null if not possible/wanted

Signed-off-by: Roland Häder <roland@mxchange.org>
---

diff --git a/src/java/org/mxchange/addressbook/beans/resendlink/AddressbookResendLinkSessionBean.java b/src/java/org/mxchange/addressbook/beans/resendlink/AddressbookResendLinkSessionBean.java
deleted file mode 100644
index 08cc740..0000000
--- a/src/java/org/mxchange/addressbook/beans/resendlink/AddressbookResendLinkSessionBean.java
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * Copyright (C) 2016, 2017 Roland Häder
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package org.mxchange.addressbook.beans.resendlink;
-
-import java.text.MessageFormat;
-import java.util.Locale;
-import javax.ejb.EJB;
-import javax.ejb.EJBException;
-import javax.ejb.Stateless;
-import javax.mail.Address;
-import javax.mail.internet.AddressException;
-import javax.mail.internet.InternetAddress;
-import org.mxchange.addressbook.database.BaseAddressbookDatabaseBean;
-import org.mxchange.jusercore.exceptions.UserNotFoundException;
-import org.mxchange.jusercore.exceptions.UserStatusConfirmedException;
-import org.mxchange.jusercore.exceptions.UserStatusLockedException;
-import org.mxchange.jusercore.model.register.UserRegistrationSessionBeanRemote;
-import org.mxchange.jusercore.model.resendlink.ResendLinkSessionBeanRemote;
-import org.mxchange.jusercore.model.user.LoginUser;
-import org.mxchange.jusercore.model.user.User;
-import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
-import org.mxchange.jusercore.model.user.status.UserAccountStatus;
-
-/**
- * A session-based EJB for resending confirmation links
- * <p>
- * @author Roland Häder<roland@mxchange.org>
- */
-@Stateless (name = "resendLink", description = "A bean resending confirmation links")
-public class AddressbookResendLinkSessionBean extends BaseAddressbookDatabaseBean implements ResendLinkSessionBeanRemote {
-
-	/**
-	 * Serial number
-	 */
-	private static final long serialVersionUID = 71_546_726_857_195_360L;
-
-	/**
-	 * Registration bean
-	 */
-	@EJB
-	private UserRegistrationSessionBeanRemote registerBean;
-
-	/**
-	 * Regular user bean
-	 */
-	@EJB
-	private UserSessionBeanRemote userBean;
-
-	/**
-	 * Default constructor
-	 */
-	public AddressbookResendLinkSessionBean () {
-		// Call super constructor
-		super();
-	}
-
-	@Override
-	public void resendConfirmationLink (final User user, final Locale locale, final String baseUrl) throws UserNotFoundException, UserStatusConfirmedException, UserStatusLockedException {
-		// Log trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.resendConfirmationLink: user={1},locale={2},baseUrl={3} - CALLED!", this.getClass().getSimpleName(), user, locale, baseUrl)); //NOI18N
-
-		// The user instance should be valid
-		if (null == user) {
-			// Throw NPE
-			throw new NullPointerException("user is null"); //NOI18N
-		} else if (user.getUserId() == null) {
-			// Throw NPE again
-			throw new NullPointerException("user.userId is null"); //NOI18N
-		} else if (user.getUserId() < 1) {
-			// Invalid id number
-			throw new IllegalArgumentException(MessageFormat.format("user.userId={0} is not valid", user.getUserId())); //NOI18N
-		} else if (!this.userBean.ifUserExists(user)) {
-			// User not found
-			throw new UserNotFoundException(user);
-		} else if (user.getUserConfirmKey() == null) {
-			// Throw NPE again
-			throw new NullPointerException("this.userConfirmKey is null"); //NOI18N
-		} else if (user.getUserAccountStatus() == UserAccountStatus.CONFIRMED) {
-			// User account status is not UNCONFIRMED
-			throw new UserStatusConfirmedException(user);
-		} else if (user.getUserAccountStatus() == UserAccountStatus.LOCKED) {
-			// User account status is not UNCONFIRMED
-			throw new UserStatusLockedException(user);
-		} else if (null == locale) {
-			// Locale should be set
-			throw new NullPointerException("locale is null"); //NOI18N
-		}
-
-		// Get new registration key
-		String confirmationKey = this.registerBean.generateConfirmationKey(user);
-
-		// Get managed instance
-		User managedUser = this.getEntityManager().find(LoginUser.class, user.getUserId());
-
-		// Set it in user
-		managedUser.setUserConfirmKey(confirmationKey);
-
-		// Init variable
-		Address emailAddress;
-
-		try {
-			// Create email address and set
-			emailAddress = new InternetAddress(managedUser.getUserContact().getContactEmailAddress());
-		} catch (final AddressException ex) {
-			// Throw again
-			throw new EJBException(ex);
-		}
-
-		// Send email
-		// @TODO: Internationlize the subject line somehow
-		this.sendEmail("Resend confirmation link", "resend_confirmation_link", emailAddress, user, baseUrl); //NOI18N
-
-		// Log trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.resendConfirmationLink: EXIT!", this.getClass().getSimpleName())); //NOI18N
-	}
-
-}
diff --git a/src/java/org/mxchange/jcontacts/contact/AddressbookContactSessionBean.java b/src/java/org/mxchange/jcontacts/contact/AddressbookContactSessionBean.java
index b39bc76..61dd937 100644
--- a/src/java/org/mxchange/jcontacts/contact/AddressbookContactSessionBean.java
+++ b/src/java/org/mxchange/jcontacts/contact/AddressbookContactSessionBean.java
@@ -24,7 +24,6 @@ import javax.ejb.Stateless;
 import javax.persistence.NoResultException;
 import javax.persistence.Query;
 import org.mxchange.addressbook.database.BaseAddressbookDatabaseBean;
-import org.mxchange.jcontacts.contact.utils.ContactUtils;
 import org.mxchange.jcontacts.exceptions.ContactNotFoundException;
 
 /**
diff --git a/src/java/org/mxchange/jusercore/model/email_address/AddressbookUserEmailChangeSessionBean.java b/src/java/org/mxchange/jusercore/model/email_address/AddressbookUserEmailChangeSessionBean.java
deleted file mode 100644
index db07376..0000000
--- a/src/java/org/mxchange/jusercore/model/email_address/AddressbookUserEmailChangeSessionBean.java
+++ /dev/null
@@ -1,249 +0,0 @@
-/*
- * Copyright (C) 2016, 2017 Roland Häder
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package org.mxchange.jusercore.model.email_address;
-
-import java.text.MessageFormat;
-import java.util.GregorianCalendar;
-import java.util.List;
-import javax.ejb.EJB;
-import javax.ejb.EJBException;
-import javax.ejb.Stateless;
-import javax.mail.Address;
-import javax.mail.internet.AddressException;
-import javax.mail.internet.InternetAddress;
-import javax.persistence.NoResultException;
-import javax.persistence.Query;
-import org.mxchange.addressbook.database.BaseAddressbookDatabaseBean;
-import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
-import org.mxchange.jusercore.model.user.UserUtils;
-
-/**
- * A session-scoped bean for changing email addresses
- * <p>
- * @author Roland Häder<roland@mxchange.org>
- */
-@Stateless (name = "userEmailChange", description = "A bean handling user email changes")
-public class AddressbookUserEmailChangeSessionBean extends BaseAddressbookDatabaseBean implements UserEmailChangeSessionBeanRemote {
-
-	/**
-	 * Serial number
-	 */
-	private static final long serialVersionUID = 182_698_165_971_548L;
-
-	/**
-	 * User bean
-	 */
-	@EJB
-	private UserSessionBeanRemote userBean;
-
-	/**
-	 * Default constructor
-	 */
-	public AddressbookUserEmailChangeSessionBean () {
-		// Call super constructor
-		super();
-	}
-
-	@Override
-	@SuppressWarnings ("unchecked")
-	public List<String> allQueuedAddresses () {
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.allQueuedAddresses: CALLED!", this.getClass().getSimpleName())); //NOI18N
-
-		// Get named query
-		Query query = this.getEntityManager().createNamedQuery("AllEmailAddressChanges", String.class); //NOI18N
-
-		// Get all entries
-		List<String> emailAddresses = query.getResultList();
-
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.allQueuedAddresses: emailAddresses.size()={1} - EXIT!", this.getClass().getSimpleName(), emailAddresses.size())); //NOI18N
-
-		// Return it
-		return emailAddresses;
-	}
-
-	@Override
-	public void enqueueEmailAddressForChange (final ChangeableEmailAddress emailChange, final String baseUrl) {
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.enqueueEmailAddressForChange: emailChange={1},baseUrl={2} - CALLED!", this.getClass().getSimpleName(), emailChange, baseUrl)); //NOI18N
-
-		// Email address change should be valid
-		if (null == emailChange) {
-			// Abort here
-			throw new NullPointerException("emailChange is null"); //NOI18N
-		} else if (emailChange.getEmailChangeUser() == null) {
-			// Throw NPE again
-			throw new NullPointerException("emailChange.emailChangeUser is null"); //NOI18N
-		} else if (emailChange.getEmailChangeUser().getUserId() == null) {
-			// Throw NPE again
-			throw new NullPointerException("emailChange.emailChangeUser.userId is null"); //NOI18N
-		} else if (emailChange.getEmailChangeUser().getUserId() < 1) {
-			// Not valid id
-			throw new IllegalArgumentException(MessageFormat.format("emailChange.emailChangeUser.userId={0} is invalid.", emailChange.getEmailChangeUser().getUserId())); //NOI18N
-		} else if (!this.userBean.ifUserExists(emailChange.getEmailChangeUser())) {
-			// User does not exist
-			throw new EJBException(MessageFormat.format("Email change with id {0} does not exist.", emailChange.getEmailChangeId())); //NOI18N
-		} else if (emailChange.getEmailAddress().trim().isEmpty()) {
-			// Email address is empty
-			throw new IllegalArgumentException("emailChange.emaiLAddress is empty."); //NOI18N
-		} else if (this.isEmailAddressEnqueued(emailChange.getEmailAddress())) {
-			// Email address is already enqueued
-			throw new EJBException(MessageFormat.format("Email address {0} is already enqueued.", emailChange.getEmailAddress())); //NOI18N
-		}
-
-		// The email change is not (yet) there, add secure hash and "created" timestamp
-		emailChange.setEmailChangeCreated(new GregorianCalendar());
-		this.generateSecureHash(emailChange);
-
-		// Make user managed
-		emailChange.setEmailChangeUser(this.getManagedUser(emailChange.getEmailChangeUser()));
-
-		// Persist it
-		//@TODO Fix email delivery then allow this: this.getEntityManager().persist(emailChange);
-		// Init variable
-		Address emailAddress;
-
-		try {
-			// Create email address and set
-			emailAddress = new InternetAddress(emailChange.getEmailAddress());
-		} catch (final AddressException ex) {
-			// Throw again
-			throw new EJBException(ex);
-		}
-
-		// Send email
-		this.sendEmail("Email change", "email_change", emailAddress, emailChange.getEmailChangeUser(), baseUrl); //NOI18N
-
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.enqueueEmailAddressForChange - EXIT!", this.getClass().getSimpleName())); //NOI18N
-	}
-
-	@Override
-	public boolean isEmailAddressEnqueued (final String emailAddress) {
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isEmailAddressEnqueued: emailAddress={1} - CALLED!", this.getClass().getSimpleName(), emailAddress)); //NOI18N
-
-		// Create query instance
-		Query query = this.getEntityManager().createNamedQuery("SearchEmailChangeByEmail"); //NOI18N
-
-		// Add email address as parameter
-		query.setParameter("email", emailAddress); //NOI18N
-
-		// Initialize variable
-		boolean isFound = false;
-
-		// Try it
-		try {
-			// Try to get single result
-			ChangeableEmailAddress dummy = (ChangeableEmailAddress) query.getSingleResult();
-
-			// Found it
-			isFound = true;
-		} catch (final NoResultException ex) {
-			// Log it
-			this.getLoggerBeanLocal().logException(ex);
-		}
-
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isEmailAddressEnqueued: isFound={1} - EXIT!", this.getClass().getSimpleName(), isFound)); //NOI18N
-
-		// Return it
-		return isFound;
-	}
-
-	@Override
-	public void updateEmailAddress (final ChangeableEmailAddress emailAddress) {
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.updateEmailAddress: emailAddress={1} - CALLED!", this.getClass().getSimpleName(), emailAddress)); //NOI18N
-
-		// Email address change should be valid
-		if (null == emailAddress) {
-			// Abort here
-			throw new NullPointerException("emailAddress is null"); //NOI18N
-		} else if (emailAddress.getEmailChangeId() == null) {
-			// Throw NPE again
-			throw new NullPointerException("emailAddress.emailChangeId is null"); //NOI18N
-		} else if (emailAddress.getEmailChangeId() < 1) {
-			// Not valid
-			throw new IllegalArgumentException(MessageFormat.format("emailAddress.emailChangeId={0} is not valid.", emailAddress.getEmailChangeId())); //NOI18N
-		} else if (emailAddress.getEmailAddress().trim().isEmpty()) {
-			// Email address is empty
-			throw new IllegalArgumentException("emailAddress.emaiLAddress is empty."); //NOI18N
-		} else if (!this.userBean.ifUserExists(emailAddress.getEmailChangeUser())) {
-			// User does not exist
-			throw new EJBException(MessageFormat.format("Email change with id {0} does not exist.", emailAddress.getEmailChangeId())); //NOI18N
-		} else if (!this.isEmailAddressEnqueued(emailAddress.getEmailAddress())) {
-			// Email address is not enqueued
-			throw new EJBException(MessageFormat.format("Email address {0} is not enqueued.", emailAddress.getEmailAddress())); //NOI18N
-		}
-
-		throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
-	}
-
-	/**
-	 * Generates a secure, unique hash for given email address change. This
-	 * requires to check if the hash is really not there.
-	 * <p>
-	 * @param emailAddressChange Email address change
-	 */
-	private void generateSecureHash (final ChangeableEmailAddress emailAddressChange) {
-		// Email address change should be valid
-		if (null == emailAddressChange) {
-			// Abort here
-			throw new NullPointerException("emailAddressChange is null"); //NOI18N
-		} else if (emailAddressChange.getEmailAddress().trim().isEmpty()) {
-			// Email address is empty
-			throw new IllegalArgumentException("emailAddressChange.emaiLAddress is empty."); //NOI18N
-		}
-
-		// Initialize loop with null
-		String hash = null;
-
-		// Default is not used
-		boolean isUsed = true;
-
-		// Search for free hash
-		while (isUsed) {
-			// Generate hash, there is already in UserUtils a nice method that can be used for this purpose.
-			hash = UserUtils.encryptPassword(String.format("%s:%s", emailAddressChange.getEmailAddress(), emailAddressChange.toString())); //NOI18N
-
-			// The hash *may* be unique, better test it
-			Query query = this.getEntityManager().createNamedQuery("SearchEmailChangeByHash", EmailAddressChange.class); //NOI18N
-
-			// Set hash as parameter
-			query.setParameter("hash", hash); //NOI18N
-
-			// Try to get single result
-			try {
-				// Get single result
-				ChangeableEmailAddress dummy = (ChangeableEmailAddress) query.getSingleResult();
-			} catch (final NoResultException ex) {
-				// Not found
-				isUsed = false;
-			}
-		}
-
-		// hash should not be null and set
-		assert (hash != null) : "hash is null"; //NOI18N
-		assert (!hash.isEmpty()) : "hash is empty"; //NOI18N
-
-		// Set it in email change
-		emailAddressChange.setEmailChangeHash(hash);
-	}
-
-}
diff --git a/src/java/org/mxchange/jusercore/model/login/AddressbookUserLoginSessionBean.java b/src/java/org/mxchange/jusercore/model/login/AddressbookUserLoginSessionBean.java
index c33ba5f..3802daa 100644
--- a/src/java/org/mxchange/jusercore/model/login/AddressbookUserLoginSessionBean.java
+++ b/src/java/org/mxchange/jusercore/model/login/AddressbookUserLoginSessionBean.java
@@ -25,7 +25,7 @@ import org.mxchange.jusercore.exceptions.UserNotFoundException;
 import org.mxchange.jusercore.exceptions.UserPasswordMismatchException;
 import org.mxchange.jusercore.exceptions.UserStatusLockedException;
 import org.mxchange.jusercore.exceptions.UserStatusUnconfirmedException;
-import org.mxchange.jusercore.model.register.UserRegistrationSessionBeanRemote;
+import org.mxchange.jusercore.model.user.register.UserRegistrationSessionBeanRemote;
 import org.mxchange.jusercore.model.user.User;
 import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
 import org.mxchange.jusercore.model.user.UserUtils;
diff --git a/src/java/org/mxchange/jusercore/model/register/AddressbookUserRegistrationSessionBean.java b/src/java/org/mxchange/jusercore/model/register/AddressbookUserRegistrationSessionBean.java
deleted file mode 100644
index ff98ffc..0000000
--- a/src/java/org/mxchange/jusercore/model/register/AddressbookUserRegistrationSessionBean.java
+++ /dev/null
@@ -1,207 +0,0 @@
-/*
- * Copyright (C) 2016, 2017 Roland Häder
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package org.mxchange.jusercore.model.register;
-
-import java.text.MessageFormat;
-import javax.ejb.EJB;
-import javax.ejb.EJBException;
-import javax.ejb.Stateless;
-import javax.mail.Address;
-import javax.mail.internet.AddressException;
-import javax.mail.internet.InternetAddress;
-import javax.persistence.NoResultException;
-import javax.persistence.Query;
-import org.mxchange.addressbook.database.BaseAddressbookDatabaseBean;
-import org.mxchange.jcontacts.contact.Contact;
-import org.mxchange.jusercore.exceptions.EmailAddressAlreadyRegisteredException;
-import org.mxchange.jusercore.exceptions.UserNameAlreadyRegisteredException;
-import org.mxchange.jusercore.model.user.AdminUserSessionBeanRemote;
-import org.mxchange.jusercore.model.user.LoginUser;
-import org.mxchange.jusercore.model.user.User;
-import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
-import org.mxchange.jusercore.model.user.UserUtils;
-
-/**
- * A session-scoped bean for user registration
- * <p>
- * @author Roland Häder<roland@mxchange.org>
- */
-@Stateless (name = "register", description = "A bean handling the user registration")
-public class AddressbookUserRegistrationSessionBean extends BaseAddressbookDatabaseBean implements UserRegistrationSessionBeanRemote {
-
-	/**
-	 * Serial number
-	 */
-	private static final long serialVersionUID = 12_348_958_986_818_627L;
-
-	/**
-	 * Administrative user bean
-	 */
-	@EJB
-	private AdminUserSessionBeanRemote adminUserBean;
-
-	/**
-	 * Regular user EJB
-	 */
-	@EJB
-	private UserSessionBeanRemote userBean;
-
-	/**
-	 * Default constructor
-	 */
-	public AddressbookUserRegistrationSessionBean () {
-		// Call super constructor
-		super();
-	}
-
-	@Override
-	public String generateConfirmationKey (final User user) {
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.generateConfirmationKey: user={1} - CALLED!", this.getClass().getSimpleName(), user)); //NOI18N
-
-		// user should not be null
-		if (null == user) {
-			// Abort here
-			throw new NullPointerException("user is null"); //NOI18N
-		}
-
-		// Create named instance
-		Query query = this.getEntityManager().createNamedQuery("SearchUserByConfirmKey", LoginUser.class); //NOI18N
-
-		// Init confirmation key
-		String confirmationKey = null;
-
-		// Find a free one
-		while (confirmationKey == null) {
-			// Create new one
-			String key = UserUtils.generatedConfirmationKey(user);
-
-			// Set key as parameter
-			query.setParameter("confirmKey", key); //NOI18N
-
-			// Try it
-			try {
-				// Get contact instance
-				Contact contact = (Contact) query.getSingleResult();
-
-				// Warning message
-				this.getLoggerBeanLocal().logWarning(MessageFormat.format("{0}.generateConfirmationKey: key {1} already found: contact.contactId={2}", this.getClass().getSimpleName(), key, contact.getContactId())); //NOI18N
-			} catch (final NoResultException ex) {
-				// Not found, normal case
-				confirmationKey = key;
-				break;
-			}
-		}
-
-		// Log trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.generateConfirmationKey: confirmationKey={1} - EXIT!", this.getClass().getSimpleName(), confirmationKey)); //NOI18N
-
-		// Return it
-		return confirmationKey;
-	}
-
-	@Override
-	public boolean isEmailAddressRegistered (final User user) {
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isEmailAddressRegistered: user={1} - CALLED!", this.getClass().getSimpleName(), user)); //NOI18N
-
-		// Check bean
-		assert (this.userBean instanceof UserSessionBeanRemote) : "this.userBean is not set"; //NOI18N
-
-		// user should not be null
-		if (null == user) {
-			// Abort here
-			throw new NullPointerException("user is null"); //NOI18N
-		}
-
-		// Call other bean
-		return this.userBean.isEmailAddressRegistered(user);
-	}
-
-	@Override
-	public boolean isUserNameRegistered (final User user) {
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isUserNameRegistered: user={1} - CALLED!", this.getClass().getSimpleName(), user)); //NOI18N
-
-		// Check bean
-		assert (this.userBean instanceof UserSessionBeanRemote) : "this.userBean is not set"; //NOI18N
-
-		// user should not be null
-		if (null == user) {
-			// Abort here
-			throw new NullPointerException("user is null"); //NOI18N
-		}
-
-		// Call other bean
-		return this.userBean.isUserNameRegistered(user);
-	}
-
-	@Override
-	public User registerUser (final User user, final String baseUrl) throws UserNameAlreadyRegisteredException, EmailAddressAlreadyRegisteredException {
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.registerUser: user={1},baseUrl={2} - CALLED!", this.getClass().getSimpleName(), user, baseUrl)); //NOI18N
-
-		// user should not be null
-		if (null == user) {
-			// Abort here
-			throw new NullPointerException("user is null"); //NOI18N
-		} else if (user.getUserContact() == null) {
-			// Throw NPE again
-			throw new NullPointerException("user.userContact is null"); //NOI18N
-		} else if (user.getUserContact().getContactEmailAddress() == null) {
-			// Throw NPE again
-			throw new NullPointerException("user.userContact.contactEmailAddress is null"); //NOI18N
-		} else if (user.getUserContact().getContactEmailAddress().isEmpty()) {
-			// Is empty
-			throw new IllegalArgumentException("user.userContact.contactEmailAddress is empty"); //NOI18N
-		}
-
-		// Check if user is registered
-		if (this.isUserNameRegistered(user)) {
-			// Abort here
-			throw new UserNameAlreadyRegisteredException(user);
-		} else if (this.isEmailAddressRegistered(user)) {
-			// Abort here
-			throw new EmailAddressAlreadyRegisteredException(user);
-		}
-
-		// Call other EJB
-		User addedUser = this.adminUserBean.addUser(user);
-
-		// Init variable
-		Address emailAddress;
-
-		try {
-			// Create email address and set
-			emailAddress = new InternetAddress(addedUser.getUserContact().getContactEmailAddress());
-		} catch (final AddressException ex) {
-			// Throw again
-			throw new EJBException(ex);
-		}
-
-		// Send email
-		// @TODO: Internationlize the subject line somehow
-		this.sendEmail("Registration", "registration", emailAddress, addedUser, baseUrl); //NOI18N
-
-		// Trace message
-		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.registerUser: addedUser={1},addedUser.userId={2} - EXIT!", this.getClass().getSimpleName(), addedUser, addedUser.getUserId())); //NOI18N
-
-		// Return it
-		return addedUser;
-	}
-
-}
diff --git a/src/java/org/mxchange/jusercore/model/user/AddressbookAdminUserSessionBean.java b/src/java/org/mxchange/jusercore/model/user/AddressbookAdminUserSessionBean.java
index 664a0b0..fa2ca78 100644
--- a/src/java/org/mxchange/jusercore/model/user/AddressbookAdminUserSessionBean.java
+++ b/src/java/org/mxchange/jusercore/model/user/AddressbookAdminUserSessionBean.java
@@ -32,7 +32,7 @@ import org.mxchange.jusercore.exceptions.UserNotFoundException;
 import org.mxchange.jusercore.exceptions.UserStatusConfirmedException;
 import org.mxchange.jusercore.exceptions.UserStatusLockedException;
 import org.mxchange.jusercore.exceptions.UserStatusUnconfirmedException;
-import org.mxchange.jusercore.model.register.UserRegistrationSessionBeanRemote;
+import org.mxchange.jusercore.model.user.register.UserRegistrationSessionBeanRemote;
 import org.mxchange.jusercore.model.user.status.UserAccountStatus;
 
 /**
@@ -279,7 +279,7 @@ public class AddressbookAdminUserSessionBean extends BaseAddressbookDatabaseBean
 
 		// Send out email
 		// @TODO externalize subject line
-		this.sendEmail("Account locked", "account_locked", emailAddress, managedUser, baseUrl); //NOI18N
+		this.sendEmail("User account locked", "user_account_locked", emailAddress, managedUser, baseUrl, null); //NOI18N
 
 		// Trace message
 		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.lockUserAccount: managedUser={1} - EXIT!", this.getClass().getSimpleName(), managedUser)); //NOI18N
@@ -349,7 +349,7 @@ public class AddressbookAdminUserSessionBean extends BaseAddressbookDatabaseBean
 
 		// Send out email
 		// @TODO externalize subject line
-		this.sendEmail("Account unlocked", "account_unlocked", emailAddress, managedUser, baseUrl); //NOI18N
+		this.sendEmail("User account unlocked", "user_account_unlocked", emailAddress, managedUser, baseUrl, null); //NOI18N
 
 		// Trace message
 		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.lockUserAccount: managedUser={1} - EXIT!", this.getClass().getSimpleName(), managedUser)); //NOI18N
diff --git a/src/java/org/mxchange/jusercore/model/user/AddressbookUserSessionBean.java b/src/java/org/mxchange/jusercore/model/user/AddressbookUserSessionBean.java
index 33ac6a3..33db348 100644
--- a/src/java/org/mxchange/jusercore/model/user/AddressbookUserSessionBean.java
+++ b/src/java/org/mxchange/jusercore/model/user/AddressbookUserSessionBean.java
@@ -30,6 +30,7 @@ import javax.persistence.PersistenceException;
 import javax.persistence.Query;
 import org.mxchange.addressbook.database.BaseAddressbookDatabaseBean;
 import org.mxchange.jcontacts.contact.Contact;
+import org.mxchange.jcontacts.contact.ContactUtils;
 import org.mxchange.jphone.phonenumbers.fax.DialableFaxNumber;
 import org.mxchange.jphone.phonenumbers.landline.DialableLandLineNumber;
 import org.mxchange.jphone.phonenumbers.mobile.DialableMobileNumber;
@@ -37,10 +38,10 @@ import org.mxchange.jusercore.exceptions.UserNotFoundException;
 import org.mxchange.jusercore.exceptions.UserStatusConfirmedException;
 import org.mxchange.jusercore.exceptions.UserStatusLockedException;
 import org.mxchange.jusercore.exceptions.UserStatusUnconfirmedException;
-import org.mxchange.jusercore.model.register.UserRegistrationSessionBeanRemote;
 import org.mxchange.jusercore.model.user.password_history.PasswordHistory;
 import org.mxchange.jusercore.model.user.password_history.UserPasswordHistory;
 import org.mxchange.jusercore.model.user.profilemodes.ProfileMode;
+import org.mxchange.jusercore.model.user.register.UserRegistrationSessionBeanRemote;
 import org.mxchange.jusercore.model.user.status.UserAccountStatus;
 
 /**
@@ -188,7 +189,7 @@ public class AddressbookUserSessionBean extends BaseAddressbookDatabaseBean impl
 		}
 
 		// Send out email
-		this.sendEmail("Account confirmed", "account_confirmed", emailAddress, updatedUser, baseUrl); //NOI18N
+		this.sendEmail("User account confirmed", "user_account_confirmed", emailAddress, updatedUser, baseUrl, null); //NOI18N
 
 		// Trace message
 		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.confirmAccount: updatedUser={1} - EXIT!", this.getClass().getSimpleName(), updatedUser)); //NOI18N
@@ -587,7 +588,7 @@ public class AddressbookUserSessionBean extends BaseAddressbookDatabaseBean impl
 		assert (managedUser instanceof User) : MessageFormat.format("User with id {0} not found, but should be.", user.getUserId()); //NOI18N
 
 		// Copy all data
-		managedUser.copyAll(user);
+		UserUtils.copyAll(user, managedUser);
 
 		// Set as updated
 		managedUser.setUserUpdated(new GregorianCalendar());
@@ -667,7 +668,7 @@ public class AddressbookUserSessionBean extends BaseAddressbookDatabaseBean impl
 		}
 
 		// Send email to user
-		this.sendEmail("User password change", "user_password_change", emailAddress, user, baseUrl); //NOI18N
+		this.sendEmail("User password change", "user_password_change", emailAddress, user, baseUrl, null); //NOI18N
 
 		// Trace message
 		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.updateUserPassword: entry.userPasswordHistoryId={1} - EXIT!", this.getClass().getSimpleName(), entry.getUserPasswordHistoryId())); //NOI18N
@@ -706,7 +707,7 @@ public class AddressbookUserSessionBean extends BaseAddressbookDatabaseBean impl
 		assert (managedUser instanceof User) : MessageFormat.format("User with id {0} not found, but should be.", user.getUserId()); //NOI18N
 
 		// Copy all data
-		managedUser.copyAll(user);
+		UserUtils.copyAll(user, managedUser);
 
 		// Set as updated
 		managedUser.setUserUpdated(new GregorianCalendar());
@@ -722,7 +723,7 @@ public class AddressbookUserSessionBean extends BaseAddressbookDatabaseBean impl
 		this.getLoggerBeanLocal().logDebug(MessageFormat.format("updateUserPersonalData: managedContact.contactId={0}", managedContact.getContactId())); //NOI18N
 
 		// Copy all
-		managedContact.copyAll(user.getUserContact());
+		ContactUtils.copyAll(user.getUserContact(), managedContact);
 
 		// Set it back in user
 		user.setUserContact(managedContact);
diff --git a/src/java/org/mxchange/jusercore/model/user/email_address/AddressbookUserEmailChangeSessionBean.java b/src/java/org/mxchange/jusercore/model/user/email_address/AddressbookUserEmailChangeSessionBean.java
new file mode 100644
index 0000000..bcfd656
--- /dev/null
+++ b/src/java/org/mxchange/jusercore/model/user/email_address/AddressbookUserEmailChangeSessionBean.java
@@ -0,0 +1,249 @@
+/*
+ * Copyright (C) 2016, 2017 Roland Häder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.mxchange.jusercore.model.user.email_address;
+
+import java.text.MessageFormat;
+import java.util.GregorianCalendar;
+import java.util.List;
+import javax.ejb.EJB;
+import javax.ejb.EJBException;
+import javax.ejb.Stateless;
+import javax.mail.Address;
+import javax.mail.internet.AddressException;
+import javax.mail.internet.InternetAddress;
+import javax.persistence.NoResultException;
+import javax.persistence.Query;
+import org.mxchange.addressbook.database.BaseAddressbookDatabaseBean;
+import org.mxchange.jusercore.model.email_address.ChangeableEmailAddress;
+import org.mxchange.jusercore.model.email_address.EmailAddressChange;
+import org.mxchange.jusercore.model.email_address.UserEmailChangeSessionBeanRemote;
+import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
+import org.mxchange.jusercore.model.user.UserUtils;
+
+/**
+ * A session-scoped bean for changing email addresses
+ * <p>
+ * @author Roland Häder<roland@mxchange.org>
+ */
+@Stateless (name = "userEmailChange", description = "A bean handling user email changes")
+public class AddressbookUserEmailChangeSessionBean extends BaseAddressbookDatabaseBean implements UserEmailChangeSessionBeanRemote {
+
+	/**
+	 * Serial number
+	 */
+	private static final long serialVersionUID = 182_698_165_971_548L;
+
+	/**
+	 * User bean
+	 */
+	@EJB
+	private UserSessionBeanRemote userBean;
+
+	/**
+	 * Default constructor
+	 */
+	public AddressbookUserEmailChangeSessionBean () {
+		// Call super constructor
+		super();
+	}
+
+	@Override
+	@SuppressWarnings ("unchecked")
+	public List<String> allQueuedAddresses () {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.allQueuedAddresses: CALLED!", this.getClass().getSimpleName())); //NOI18N
+
+		// Get named query
+		Query query = this.getEntityManager().createNamedQuery("AllEmailAddressChanges", String.class); //NOI18N
+
+		// Get all entries
+		List<String> emailAddresses = query.getResultList();
+
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.allQueuedAddresses: emailAddresses.size()={1} - EXIT!", this.getClass().getSimpleName(), emailAddresses.size())); //NOI18N
+
+		// Return it
+		return emailAddresses;
+	}
+
+	@Override
+	public void enqueueEmailAddressForChange (final ChangeableEmailAddress emailChange, final String baseUrl) {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.enqueueEmailAddressForChange: emailChange={1},baseUrl={2} - CALLED!", this.getClass().getSimpleName(), emailChange, baseUrl)); //NOI18N
+
+		// Email address change should be valid
+		if (null == emailChange) {
+			// Abort here
+			throw new NullPointerException("emailChange is null"); //NOI18N
+		} else if (emailChange.getEmailChangeUser() == null) {
+			// Throw NPE again
+			throw new NullPointerException("emailChange.emailChangeUser is null"); //NOI18N
+		} else if (emailChange.getEmailChangeUser().getUserId() == null) {
+			// Throw NPE again
+			throw new NullPointerException("emailChange.emailChangeUser.userId is null"); //NOI18N
+		} else if (emailChange.getEmailChangeUser().getUserId() < 1) {
+			// Not valid id
+			throw new IllegalArgumentException(MessageFormat.format("emailChange.emailChangeUser.userId={0} is invalid.", emailChange.getEmailChangeUser().getUserId())); //NOI18N
+		} else if (!this.userBean.ifUserExists(emailChange.getEmailChangeUser())) {
+			// User does not exist
+			throw new EJBException(MessageFormat.format("Email change with id {0} does not exist.", emailChange.getEmailChangeId())); //NOI18N
+		} else if (emailChange.getEmailAddress().trim().isEmpty()) {
+			// Email address is empty
+			throw new IllegalArgumentException("emailChange.emaiLAddress is empty."); //NOI18N
+		} else if (this.isEmailAddressEnqueued(emailChange.getEmailAddress())) {
+			// Email address is already enqueued
+			throw new EJBException(MessageFormat.format("Email address {0} is already enqueued.", emailChange.getEmailAddress())); //NOI18N
+		}
+
+		// The email change is not (yet) there, add secure hash and "created" timestamp
+		emailChange.setEmailChangeCreated(new GregorianCalendar());
+		this.generateSecureHash(emailChange);
+
+		// Persist it
+		//@TODO Fix email delivery then allow this: this.getEntityManager().persist(emailChange);
+		// Init variable
+		Address emailAddress;
+
+		try {
+			// Create email address and set
+			emailAddress = new InternetAddress(emailChange.getEmailAddress());
+		} catch (final AddressException ex) {
+			// Throw again
+			throw new EJBException(ex);
+		}
+
+		// Send email
+		this.sendEmail("User email change", "user_email_change", emailAddress, emailChange.getEmailChangeUser(), baseUrl, null); //NOI18N
+
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.enqueueEmailAddressForChange - EXIT!", this.getClass().getSimpleName())); //NOI18N
+	}
+
+	@Override
+	public boolean isEmailAddressEnqueued (final String emailAddress) {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isEmailAddressEnqueued: emailAddress={1} - CALLED!", this.getClass().getSimpleName(), emailAddress)); //NOI18N
+
+		// Create query instance
+		Query query = this.getEntityManager().createNamedQuery("SearchEmailChangeByEmail"); //NOI18N
+
+		// Add email address as parameter
+		query.setParameter("email", emailAddress); //NOI18N
+
+		// Initialize variable
+		boolean isFound = false;
+
+		// Try it
+		try {
+			// Try to get single result
+			ChangeableEmailAddress dummy = (ChangeableEmailAddress) query.getSingleResult();
+
+			// Found it
+			isFound = true;
+		} catch (final NoResultException ex) {
+			// Log it
+			this.getLoggerBeanLocal().logException(ex);
+		}
+
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isEmailAddressEnqueued: isFound={1} - EXIT!", this.getClass().getSimpleName(), isFound)); //NOI18N
+
+		// Return it
+		return isFound;
+	}
+
+	@Override
+	public void updateEmailAddress (final ChangeableEmailAddress emailAddress) {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.updateEmailAddress: emailAddress={1} - CALLED!", this.getClass().getSimpleName(), emailAddress)); //NOI18N
+
+		// Email address change should be valid
+		if (null == emailAddress) {
+			// Abort here
+			throw new NullPointerException("emailAddress is null"); //NOI18N
+		} else if (emailAddress.getEmailChangeId() == null) {
+			// Throw NPE again
+			throw new NullPointerException("emailAddress.emailChangeId is null"); //NOI18N
+		} else if (emailAddress.getEmailChangeId() < 1) {
+			// Not valid
+			throw new IllegalArgumentException(MessageFormat.format("emailAddress.emailChangeId={0} is not valid.", emailAddress.getEmailChangeId())); //NOI18N
+		} else if (emailAddress.getEmailAddress().trim().isEmpty()) {
+			// Email address is empty
+			throw new IllegalArgumentException("emailAddress.emaiLAddress is empty."); //NOI18N
+		} else if (!this.userBean.ifUserExists(emailAddress.getEmailChangeUser())) {
+			// User does not exist
+			throw new EJBException(MessageFormat.format("Email change with id {0} does not exist.", emailAddress.getEmailChangeId())); //NOI18N
+		} else if (!this.isEmailAddressEnqueued(emailAddress.getEmailAddress())) {
+			// Email address is not enqueued
+			throw new EJBException(MessageFormat.format("Email address {0} is not enqueued.", emailAddress.getEmailAddress())); //NOI18N
+		}
+
+		throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+	}
+
+	/**
+	 * Generates a secure, unique hash for given email address change. This
+	 * requires to check if the hash is really not there.
+	 * <p>
+	 * @param emailAddress Email address change
+	 */
+	private void generateSecureHash (final ChangeableEmailAddress emailAddress) {
+		// Email address change should be valid
+		if (null == emailAddress) {
+			// Abort here
+			throw new NullPointerException("emailAddress is null"); //NOI18N
+		} else if (emailAddress.getEmailAddress().trim().isEmpty()) {
+			// Email address is empty
+			throw new IllegalArgumentException("emailAddress.emaiLAddress is empty."); //NOI18N
+		}
+
+		// Initialize loop with null
+		String hash = null;
+
+		// Default is not used
+		boolean isUsed = true;
+
+		// Search for free hash
+		while (isUsed) {
+			// Generate hash, there is already in UserUtils a nice method that can be used for this purpose.
+			hash = UserUtils.encryptPassword(String.format("%s:%s", emailAddress.getEmailAddress(), emailAddress.toString())); //NOI18N
+
+			// The hash *may* be unique, better test it
+			Query query = this.getEntityManager().createNamedQuery("SearchEmailChangeByHash", EmailAddressChange.class); //NOI18N
+
+			// Set hash as parameter
+			query.setParameter("hash", hash); //NOI18N
+
+			// Try to get single result
+			try {
+				// Get single result
+				ChangeableEmailAddress dummy = (ChangeableEmailAddress) query.getSingleResult();
+			} catch (final NoResultException ex) {
+				// Not found
+				isUsed = false;
+			}
+		}
+
+		// hash should not be null and set
+		assert (hash != null) : "hash is null"; //NOI18N
+		assert (!hash.isEmpty()) : "hash is empty"; //NOI18N
+
+		// Set it in email change
+		emailAddress.setEmailChangeHash(hash);
+	}
+
+}
diff --git a/src/java/org/mxchange/jusercore/model/user/register/AddressbookUserRegistrationSessionBean.java b/src/java/org/mxchange/jusercore/model/user/register/AddressbookUserRegistrationSessionBean.java
new file mode 100644
index 0000000..707116e
--- /dev/null
+++ b/src/java/org/mxchange/jusercore/model/user/register/AddressbookUserRegistrationSessionBean.java
@@ -0,0 +1,218 @@
+/*
+ * Copyright (C) 2016, 2017 Roland Häder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.mxchange.jusercore.model.user.register;
+
+import java.text.MessageFormat;
+import java.util.Objects;
+import javax.ejb.EJB;
+import javax.ejb.EJBException;
+import javax.ejb.Stateless;
+import javax.mail.Address;
+import javax.mail.internet.AddressException;
+import javax.mail.internet.InternetAddress;
+import javax.persistence.NoResultException;
+import javax.persistence.Query;
+import org.mxchange.addressbook.database.BaseAddressbookDatabaseBean;
+import org.mxchange.jcontacts.contact.Contact;
+import org.mxchange.jusercore.exceptions.EmailAddressAlreadyRegisteredException;
+import org.mxchange.jusercore.exceptions.UserNameAlreadyRegisteredException;
+import org.mxchange.jusercore.model.register.UserRegistrationSessionBeanRemote;
+import org.mxchange.jusercore.model.user.AdminUserSessionBeanRemote;
+import org.mxchange.jusercore.model.user.LoginUser;
+import org.mxchange.jusercore.model.user.User;
+import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
+import org.mxchange.jusercore.model.user.UserUtils;
+
+/**
+ * A session-scoped bean for user registration
+ * <p>
+ * @author Roland Häder<roland@mxchange.org>
+ */
+@Stateless (name = "register", description = "A bean handling the user registration")
+public class AddressbookUserRegistrationSessionBean extends BaseAddressbookDatabaseBean implements UserRegistrationSessionBeanRemote {
+
+	/**
+	 * Serial number
+	 */
+	private static final long serialVersionUID = 12_348_958_986_818_627L;
+
+	/**
+	 * Administrative user bean
+	 */
+	@EJB
+	private AdminUserSessionBeanRemote adminUserBean;
+
+	/**
+	 * Regular user EJB
+	 */
+	@EJB
+	private UserSessionBeanRemote userBean;
+
+	/**
+	 * Default constructor
+	 */
+	public AddressbookUserRegistrationSessionBean () {
+		// Call super constructor
+		super();
+	}
+
+	@Override
+	public String generateConfirmationKey (final User user) {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.generateConfirmationKey: user={1} - CALLED!", this.getClass().getSimpleName(), user)); //NOI18N
+
+		// user should not be null
+		if (null == user) {
+			// Abort here
+			throw new NullPointerException("user is null"); //NOI18N
+		}
+
+		// Create named instance
+		Query query = this.getEntityManager().createNamedQuery("SearchUserByConfirmKey", LoginUser.class); //NOI18N
+
+		// Init confirmation key
+		String confirmationKey = null;
+
+		// Find a free one
+		while (confirmationKey == null) {
+			// Create new one
+			String key = UserUtils.generatedConfirmationKey(user);
+
+			// Set key as parameter
+			query.setParameter("confirmKey", key); //NOI18N
+
+			// Try it
+			try {
+				// Get contact instance
+				Contact contact = (Contact) query.getSingleResult();
+
+				// Warning message
+				this.getLoggerBeanLocal().logWarning(MessageFormat.format("{0}.generateConfirmationKey: key {1} already found: contact.contactId={2}", this.getClass().getSimpleName(), key, contact.getContactId())); //NOI18N
+			} catch (final NoResultException ex) {
+				// Not found, normal case
+				confirmationKey = key;
+				break;
+			}
+		}
+
+		// Log trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.generateConfirmationKey: confirmationKey={1} - EXIT!", this.getClass().getSimpleName(), confirmationKey)); //NOI18N
+
+		// Return it
+		return confirmationKey;
+	}
+
+	@Override
+	public boolean isEmailAddressRegistered (final User user) {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isEmailAddressRegistered: user={1} - CALLED!", this.getClass().getSimpleName(), user)); //NOI18N
+
+		// Check bean
+		assert (this.userBean instanceof UserSessionBeanRemote) : "this.userBean is not set"; //NOI18N
+
+		// user should not be null
+		if (null == user) {
+			// Abort here
+			throw new NullPointerException("user is null"); //NOI18N
+		}
+
+		// Call other bean
+		return this.userBean.isEmailAddressRegistered(user);
+	}
+
+	@Override
+	public boolean isUserNameRegistered (final User user) {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isUserNameRegistered: user={1} - CALLED!", this.getClass().getSimpleName(), user)); //NOI18N
+
+		// Check bean
+		assert (this.userBean instanceof UserSessionBeanRemote) : "this.userBean is not set"; //NOI18N
+
+		// user should not be null
+		if (null == user) {
+			// Abort here
+			throw new NullPointerException("user is null"); //NOI18N
+		}
+
+		// Call other bean
+		return this.userBean.isUserNameRegistered(user);
+	}
+
+	@Override
+	public User registerUser (final User user, final String baseUrl, final String randomPassword) throws UserNameAlreadyRegisteredException, EmailAddressAlreadyRegisteredException {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.registerUser: user={1},baseUrl={2},randomPassword[]={3} - CALLED!", this.getClass().getSimpleName(), user, baseUrl, Objects.toString(randomPassword))); //NOI18N
+
+		// user should not be null
+		if (null == user) {
+			// Abort here
+			throw new NullPointerException("user is null"); //NOI18N
+		} else if (user.getUserContact() == null) {
+			// Throw NPE again
+			throw new NullPointerException("user.userContact is null"); //NOI18N
+		} else if (user.getUserContact().getContactEmailAddress() == null) {
+			// Throw NPE again
+			throw new NullPointerException("user.userContact.contactEmailAddress is null"); //NOI18N
+		} else if (user.getUserContact().getContactEmailAddress().isEmpty()) {
+			// Is empty
+			throw new IllegalArgumentException("user.userContact.contactEmailAddress is empty"); //NOI18N
+		}
+
+		// Check if user is registered
+		if (this.isUserNameRegistered(user)) {
+			// Abort here
+			throw new UserNameAlreadyRegisteredException(user);
+		} else if (this.isEmailAddressRegistered(user)) {
+			// Abort here
+			throw new EmailAddressAlreadyRegisteredException(user);
+		}
+
+		// Call other EJB
+		User addedUser = this.adminUserBean.addUser(user);
+
+		// Init variable
+		Address emailAddress;
+
+		try {
+			// Create email address and set
+			emailAddress = new InternetAddress(addedUser.getUserContact().getContactEmailAddress());
+		} catch (final AddressException ex) {
+			// Throw again
+			throw new EJBException(ex);
+		}
+
+		// Default template is with no random password
+		String templateName = "user_registration"; //NOI18N
+
+		// Is password set?
+		if ((randomPassword instanceof String) && (!randomPassword.isEmpty())) {
+			// Switch to other template
+			templateName = "user_registration_random"; //NOI18N
+		}
+
+		// Send email
+		// @TODO: Internationlize the subject line somehow
+		this.sendEmail("Registration", templateName, emailAddress, addedUser, baseUrl, randomPassword); //NOI18N
+
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.registerUser: addedUser={1},addedUser.userId={2} - EXIT!", this.getClass().getSimpleName(), addedUser, addedUser.getUserId())); //NOI18N
+
+		// Return it
+		return addedUser;
+	}
+
+}
diff --git a/src/java/org/mxchange/jusercore/model/user/resendlink/AddressbookResendLinkSessionBean.java b/src/java/org/mxchange/jusercore/model/user/resendlink/AddressbookResendLinkSessionBean.java
new file mode 100644
index 0000000..259b43a
--- /dev/null
+++ b/src/java/org/mxchange/jusercore/model/user/resendlink/AddressbookResendLinkSessionBean.java
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2016, 2017 Roland Häder
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.mxchange.jusercore.model.user.resendlink;
+
+import java.text.MessageFormat;
+import java.util.Locale;
+import javax.ejb.EJB;
+import javax.ejb.EJBException;
+import javax.ejb.Stateless;
+import javax.mail.Address;
+import javax.mail.internet.AddressException;
+import javax.mail.internet.InternetAddress;
+import org.mxchange.addressbook.database.BaseAddressbookDatabaseBean;
+import org.mxchange.jusercore.exceptions.UserNotFoundException;
+import org.mxchange.jusercore.exceptions.UserStatusConfirmedException;
+import org.mxchange.jusercore.exceptions.UserStatusLockedException;
+import org.mxchange.jusercore.model.register.UserRegistrationSessionBeanRemote;
+import org.mxchange.jusercore.model.resendlink.ResendLinkSessionBeanRemote;
+import org.mxchange.jusercore.model.user.LoginUser;
+import org.mxchange.jusercore.model.user.User;
+import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
+import org.mxchange.jusercore.model.user.status.UserAccountStatus;
+
+/**
+ * A session-based EJB for resending confirmation links
+ * <p>
+ * @author Roland Häder<roland@mxchange.org>
+ */
+@Stateless (name = "resendLink", description = "A bean resending confirmation links")
+public class AddressbookResendLinkSessionBean extends BaseAddressbookDatabaseBean implements ResendLinkSessionBeanRemote {
+
+	/**
+	 * Serial number
+	 */
+	private static final long serialVersionUID = 71_546_726_857_195_360L;
+
+	/**
+	 * Registration bean
+	 */
+	@EJB
+	private UserRegistrationSessionBeanRemote registerBean;
+
+	/**
+	 * Regular user bean
+	 */
+	@EJB
+	private UserSessionBeanRemote userBean;
+
+	/**
+	 * Default constructor
+	 */
+	public AddressbookResendLinkSessionBean () {
+		// Call super constructor
+		super();
+	}
+
+	@Override
+	public void resendConfirmationLink (final User user, final Locale locale, final String baseUrl) throws UserNotFoundException, UserStatusConfirmedException, UserStatusLockedException {
+		// Log trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.resendConfirmationLink: user={1},locale={2},baseUrl={3} - CALLED!", this.getClass().getSimpleName(), user, locale, baseUrl)); //NOI18N
+
+		// The user instance should be valid
+		if (null == user) {
+			// Throw NPE
+			throw new NullPointerException("user is null"); //NOI18N
+		} else if (user.getUserId() == null) {
+			// Throw NPE again
+			throw new NullPointerException("user.userId is null"); //NOI18N
+		} else if (user.getUserId() < 1) {
+			// Invalid id number
+			throw new IllegalArgumentException(MessageFormat.format("user.userId={0} is not valid", user.getUserId())); //NOI18N
+		} else if (!this.userBean.ifUserExists(user)) {
+			// User not found
+			throw new UserNotFoundException(user);
+		} else if (user.getUserConfirmKey() == null) {
+			// Throw NPE again
+			throw new NullPointerException("this.userConfirmKey is null"); //NOI18N
+		} else if (user.getUserAccountStatus() == UserAccountStatus.CONFIRMED) {
+			// User account status is not UNCONFIRMED
+			throw new UserStatusConfirmedException(user);
+		} else if (user.getUserAccountStatus() == UserAccountStatus.LOCKED) {
+			// User account status is not UNCONFIRMED
+			throw new UserStatusLockedException(user);
+		} else if (null == locale) {
+			// Locale should be set
+			throw new NullPointerException("locale is null"); //NOI18N
+		}
+
+		// Get new registration key
+		String confirmationKey = this.registerBean.generateConfirmationKey(user);
+
+		// Get managed instance
+		User managedUser = this.getEntityManager().find(LoginUser.class, user.getUserId());
+
+		// Set it in user
+		managedUser.setUserConfirmKey(confirmationKey);
+
+		// Init variable
+		Address emailAddress;
+
+		try {
+			// Create email address and set
+			emailAddress = new InternetAddress(managedUser.getUserContact().getContactEmailAddress());
+		} catch (final AddressException ex) {
+			// Throw again
+			throw new EJBException(ex);
+		}
+
+		// Send email
+		// @TODO: Internationlize the subject line somehow
+		this.sendEmail("Resend user confirmation link", "user_resend_confirmation_link", emailAddress, user, baseUrl, null); //NOI18N
+
+		// Log trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.resendConfirmationLink: EXIT!", this.getClass().getSimpleName())); //NOI18N
+	}
+
+}