Move libraries layout', model', `peristence' under cms folder

Updated code to the new layout.
Added missing comments.
Remove /example/api

cms/persistence/implementation/mysql/src/database/database_connection_mysql.e

@@ -0,0 +1,140 @@
+note
+	description: "Object that handle a database connection for ODBC"
+	date: "$Date: 2014-08-20 15:21:15 -0300 (mi., 20 ago. 2014) $"
+	revision: "$Revision: 95678 $"
+
+class
+	DATABASE_CONNECTION_MYSQL
+
+inherit
+
+	DATABASE_CONNECTION
+		redefine
+			db_application
+		end
+
+create
+	make, make_common, make_basic, login_with_connection_string, login_with_schema
+
+feature -- Initialization
+
+	make_common
+			-- Create a database handler for MYSQL with common settings.
+		local
+			l_retried: BOOLEAN
+		do
+			create database_error_handler.make
+			create db_application.login (username, password)
+
+			if not l_retried then
+				db_application.set_hostname (hostname)
+				db_application.set_data_source (database_name)
+				db_application.set_base
+				create db_control.make
+				keep_connection := is_keep_connection
+				if keep_connection then
+					connect
+				end
+			else
+				create db_control.make
+			end
+		rescue
+			create database_error_handler.make
+			exception_as_error ((create {EXCEPTION_MANAGER}).last_exception)
+			l_retried := True
+			retry
+		end
+
+	make_basic (a_database_name: STRING)
+			-- Create a database handler and
+			-- set database_name to `a_database_name'.
+		local
+			l_retried: BOOLEAN
+		do
+			create database_error_handler.make
+			create db_application.login (username, password)
+
+			if not l_retried then
+				db_application.set_hostname (hostname)
+				db_application.set_data_source (a_database_name)
+				db_application.set_base
+				create db_control.make
+				keep_connection := is_keep_connection
+				if keep_connection then
+					connect
+				end
+			else
+				create db_control.make
+			end
+		rescue
+			create database_error_handler.make
+			exception_as_error ((create {EXCEPTION_MANAGER}).last_exception)
+			l_retried := True
+			retry
+		end
+
+	make (a_username: STRING; a_password: STRING; a_hostname: STRING; a_database_name: STRING; connection: BOOLEAN)
+
+			-- Create a database handler for ODBC and set `username' to `a_username',
+			-- `password' to `a_password'
+			-- `database_name' to `a_database_name'
+			-- `connection' to `a_connection'
+		do
+			create database_error_handler.make
+			create db_application.login (a_username, a_password)
+			db_application.set_hostname (a_hostname)
+			db_application.set_data_source (a_database_name)
+			db_application.set_base
+			create db_control.make
+			keep_connection := connection
+			if keep_connection then
+				connect
+			end
+		end
+
+	login_with_connection_string (a_string: STRING)
+			-- Login with `a_connection_string'and immediately connect to database.
+		local
+			l_string: LIST[STRING]
+			l_server: STRING
+			l_port: STRING
+			l_schema: STRING
+			l_user: STRING
+			l_password: STRING
+		do
+			create database_error_handler.make
+
+			l_string := a_string.split (';')
+			l_server := l_string.at (2).split ('=').at (2)
+			l_port := l_string.at (3).split ('=').at (2)
+			l_schema := l_string.at (4).split ('=').at (2)
+			l_user := l_string.at (5).split ('=').at (2)
+			l_password := l_string.at (6).split ('=').at (2)
+
+			create db_application
+			db_application.set_application (l_schema)
+			db_application.set_hostname (l_server + ":" + l_port)
+			db_application.login_and_connect (l_user, l_password)
+			db_application.set_base
+			create db_control.make
+			keep_connection := is_keep_connection
+		end
+
+	login_with_schema (a_schema: STRING; a_username: STRING; a_password: STRING)
+			-- Login with `a_connection_string'and immediately connect to database.
+		do
+			create database_error_handler.make
+			create db_application
+			db_application.set_application (a_schema)
+			db_application.login_and_connect (a_username, a_password)
+			db_application.set_base
+			create db_control.make
+			keep_connection := is_keep_connection
+		end
+
+feature -- Databse Connection
+
+	db_application: DATABASE_APPL [MYSQL]
+			-- Database application.
+
+end