From 424ee5a906f4d355fb58e27a7d33bb34c078836b Mon Sep 17 00:00:00 2001
From: =?utf8?q?Roland=20H=C3=A4der?= <roland@mxchange.org>
Date: Thu, 12 May 2016 14:09:31 +0200
Subject: [PATCH] implemented business method generateRandomUserName() which
 uses getUserNameList() to get full list of available user names and checks
 that list.

---
 .../user/AddressbookUserSessionBean.java      | 34 +++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/src/java/org/mxchange/jusercore/model/user/AddressbookUserSessionBean.java b/src/java/org/mxchange/jusercore/model/user/AddressbookUserSessionBean.java
index 52df172..a713d21 100644
--- a/src/java/org/mxchange/jusercore/model/user/AddressbookUserSessionBean.java
+++ b/src/java/org/mxchange/jusercore/model/user/AddressbookUserSessionBean.java
@@ -92,7 +92,7 @@ public class AddressbookUserSessionBean extends BaseAddressbookDatabaseBean impl
 		// Update cellphone, land-line and fax instance
 		this.setAllContactPhoneEntriesCreated(user.getUserContact());
 
-			// Persist it
+		// Persist it
 		this.getEntityManager().persist(user);
 
 		// Flush to get id back
@@ -209,6 +209,9 @@ public class AddressbookUserSessionBean extends BaseAddressbookDatabaseBean impl
 
 	@Override
 	public User findUserById (final Long userId) throws UserNotFoundException {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("findUserById: userId={0} - CALLED!", userId)); //NOI18N
+
 		// Is the parameter valid?
 		if (null == userId) {
 			// Throw NPE
@@ -231,12 +234,39 @@ public class AddressbookUserSessionBean extends BaseAddressbookDatabaseBean impl
 		User user = (User) query.getSingleResult();
 
 		// Should be there
-		assert(user instanceof User) : "user is null"; //NOI18N
+		assert (user instanceof User) : "user is null"; //NOI18N
+
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("findUserById: user={0} - EXIT!!", user)); //NOI18N
 
 		// Return found user
 		return user;
 	}
 
+	@Override
+	public String generateRandomUserName () {
+		// Trace message
+		this.getLoggerBeanLocal().logTrace("generateRandomUserName - CALLED!"); //NOI18N
+
+		// Get full list
+		List<String> userList = this.getUserNameList();
+
+		// Init variable
+		String userName = null;
+
+		// Loop until a user name is found
+		while ((userName == null) || (userList.contains(userName))) {
+			// Generate random name
+			userName = UserUtils.generateRandomUserName();
+		}
+
+		// Trace message
+		this.getLoggerBeanLocal().logTrace(MessageFormat.format("generateRandomUserName: userName={0} - EXIT!", userName)); //NOI18N
+
+		// Found one, so return it
+		return userName;
+	}
+
 	@Override
 	@SuppressWarnings ("unchecked")
 	public List<String> getEmailAddressList () {
-- 
2.39.5