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

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

cms/persistence/implementation/common/database/database_connection_odbc.e

@@ -0,0 +1,126 @@
+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_ODBC
+
+inherit
+
+	DATABASE_CONNECTION
+		redefine
+			db_application
+		end
+
+create
+	make, make_common, make_basic, login_with_connection_string
+
+feature -- Initialization
+
+	make_common
+			-- Create a database handler for ODBC with common settings.
+		local
+			l_retried: BOOLEAN
+		do
+			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
+				set_successful
+			else
+				create db_control.make
+			end
+		rescue
+			create db_control.make
+			set_last_error_from_exception ("Connection execution")
+			log.write_critical (generator + ".make_common:" + last_error_message)
+			if is_connected then
+				disconnect
+			end
+			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 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
+				set_successful
+			else
+				create db_control.make
+			end
+		rescue
+			create db_control.make
+			set_last_error_from_exception ("Connection execution")
+			log.write_critical (generator + ".make_common:" + last_error_message)
+			if is_connected then
+				disconnect
+			end
+			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 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.
+		do
+			log.write_debug (generator +".login_with_connection_string")
+			create db_application.login_with_connection_string (a_string)
+			db_application.set_base
+			create db_control.make
+			log.write_debug (generator +".login_with_connection_string, is_keep_connection? "+ is_keep_connection.out )
+			keep_connection := is_keep_connection
+			if keep_connection then
+				connect
+				if not db_control.is_ok then
+					log.write_critical (generator +".login_with_connection_string:"+ db_control.error_code.out )
+					log.write_critical (generator +".login_with_connection_string:"+ db_control.error_message_32 )
+				end
+				log.write_debug (generator +".login_with_connection_string, After connect, is_connected? "+ is_connected.out)
+			end
+		end
+
+feature -- Databse Connection
+
+	db_application: DATABASE_APPL [ODBC]
+			-- Database application.
+
+end