From 400a827b510efda5f1c09087c857a4fc7652c815 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Roland=20H=C3=A4der?= <roland@mxchange.org>
Date: Fri, 13 May 2016 16:35:09 +0200
Subject: [PATCH] implemented lookupUserByEmailAddress() (this can be
 cherry-picked)

---
 .../beans/user/PizzaUserWebSessionBean.java   | 47 +++++++++++++++++++
 .../user/PizzaUserWebSessionController.java   | 13 +++++
 2 files changed, 60 insertions(+)

diff --git a/src/java/org/mxchange/pizzaapplication/beans/user/PizzaUserWebSessionBean.java b/src/java/org/mxchange/pizzaapplication/beans/user/PizzaUserWebSessionBean.java
index d82fc701..e9e7e7c6 100644
--- a/src/java/org/mxchange/pizzaapplication/beans/user/PizzaUserWebSessionBean.java
+++ b/src/java/org/mxchange/pizzaapplication/beans/user/PizzaUserWebSessionBean.java
@@ -42,6 +42,7 @@ import org.mxchange.jusercore.events.user.add.AdminAddedUserEvent;
 import org.mxchange.jusercore.events.user.update.AdminUpdatedUserDataEvent;
 import org.mxchange.jusercore.events.user.update.UpdatedUserPersonalDataEvent;
 import org.mxchange.jusercore.events.user.update.UserUpdatedPersonalDataEvent;
+import org.mxchange.jusercore.exceptions.UserEmailAddressNotFoundException;
 import org.mxchange.jusercore.exceptions.UserNotFoundException;
 import org.mxchange.jusercore.exceptions.UserPasswordMismatchException;
 import org.mxchange.jusercore.model.user.LoginUser;
@@ -748,6 +749,52 @@ public class PizzaUserWebSessionBean extends BasePizzaController implements Pizz
 		return user;
 	}
 
+	@Override
+	public User lookupUserByEmailAddress (final String emailAddress) throws UserEmailAddressNotFoundException {
+		// Parameter must be valid
+		if (null == emailAddress) {
+			// Throw NPE
+			throw new NullPointerException("emailAddress is null"); //NOI18N
+		} else if (emailAddress.isEmpty()) {
+			// Not valid
+			throw new IllegalArgumentException("emailAddress is empty"); //NOI18N
+		}
+
+		// Init variable
+		User user = null;
+
+		// Try to lookup it in visible user list
+		for (final Iterator<User> iterator = this.userList.iterator(); iterator.hasNext();) {
+			// Get next user
+			User next = iterator.next();
+
+			// Contact should be set
+			if (next.getUserContact() == null) {
+				// Contact is null
+				throw new NullPointerException(MessageFormat.format("next.userContact is null for user id {0}", + next.getUserId()));
+			} else if (next.getUserContact().getContactEmailAddress() == null) {
+				// Email address should be set
+				throw new NullPointerException(MessageFormat.format("next.userContact.contactEmailAddress is null for user id {0}", next.getUserId()));
+			}
+
+			// Is the email address found?
+			if (Objects.equals(next.getUserContact().getContactEmailAddress(), emailAddress)) {
+				// Copy to other variable
+				user = next;
+				break;
+			}
+		}
+
+		// Is it still null?
+		if (null == user) {
+			// Not visible for the current user
+			throw new UserEmailAddressNotFoundException(emailAddress);
+		}
+
+		// Return it
+		return user;
+	}
+
 	@Override
 	public List<Contact> selectableContacts () {
 		return Collections.unmodifiableList(this.selectableContacts);
diff --git a/src/java/org/mxchange/pizzaapplication/beans/user/PizzaUserWebSessionController.java b/src/java/org/mxchange/pizzaapplication/beans/user/PizzaUserWebSessionController.java
index ff5d8b50..bb2d8ef3 100644
--- a/src/java/org/mxchange/pizzaapplication/beans/user/PizzaUserWebSessionController.java
+++ b/src/java/org/mxchange/pizzaapplication/beans/user/PizzaUserWebSessionController.java
@@ -25,6 +25,7 @@ import org.mxchange.jusercore.events.registration.UserRegisteredEvent;
 import org.mxchange.jusercore.events.user.add.AdminAddedUserEvent;
 import org.mxchange.jusercore.events.user.update.AdminUpdatedUserDataEvent;
 import org.mxchange.jusercore.events.user.update.UpdatedUserPersonalDataEvent;
+import org.mxchange.jusercore.exceptions.UserEmailAddressNotFoundException;
 import org.mxchange.jusercore.exceptions.UserNotFoundException;
 import org.mxchange.jusercore.model.user.User;
 import org.mxchange.jusercore.model.user.profilemodes.ProfileMode;
@@ -143,6 +144,18 @@ public interface PizzaUserWebSessionController extends Serializable {
 	 */
 	User lookupUserById (final Long userId) throws UserNotFoundException;
 
+	/**
+	 * Tries to lookup user by given email address. If the user is not found a
+	 * proper exceptions is thrown.
+	 * <p>
+	 * @param emailAddress Email address
+	 * <p>
+	 * @return User instance
+	 * <p>
+	 * @throws UserEmailAddressNotFoundException If the user's email address is not found
+	 */
+	User lookupUserByEmailAddress (final String emailAddress) throws UserEmailAddressNotFoundException;
+
 	/**
 	 * Returns a list of all selectable contacts for user creation. Contacts
 	 * from already existing users are excluded in this list.
-- 
2.39.5