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

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

cms/persistence/implementation/mysql/tests/transactions/transaction_test_set.e

@@ -0,0 +1,97 @@
+note
+	description: "[
+		Eiffel tests that can be executed by testing tool.
+	]"
+	author: "EiffelStudio test wizard"
+	date: "$Date$"
+	revision: "$Revision$"
+	testing: "type/manual"
+
+class
+	TRANSACTION_TEST_SET
+
+inherit
+
+	EQA_TEST_SET
+		redefine
+			on_prepare,
+			on_clean
+		select
+			default_create
+		end
+	ABSTRACT_DB_TEST
+		rename
+			default_create as default_db_test
+		end
+
+
+feature {NONE} -- Events
+
+	on_prepare
+			-- <Precursor>
+		do
+			(create {CLEAN_DB}).clean_db(connection)
+		end
+
+	on_clean
+			-- <Precursor>
+		do
+		end
+
+feature -- Test routines
+
+	test_user_rollback
+		note
+			testing:  "execution/isolated"
+		do
+			connection.begin_transaction
+			user_provider.new_user ("test", "test","test@admin.com")
+			assert ("Has user:", user_provider.has_user)
+			connection.rollback
+			assert ("Not has user:", not user_provider.has_user)
+		end
+
+	test_user_node_rollback
+		note
+			testing:  "execution/isolated"
+		do
+			connection.begin_transaction
+			user_provider.new_user ("test", "test","test@admin.com")
+			assert ("Has user:", user_provider.has_user)
+			node_provider.new_node (default_node)
+			node_provider.add_author (1, 1)
+			assert ("Has one node:", node_provider.count = 1)
+			connection.rollback
+			assert ("Not has user:", not user_provider.has_user)
+			assert ("Not has nodes:", node_provider.count = 0)
+		end
+
+feature {NONE} -- Implementation
+
+	node_provider: NODE_DATA_PROVIDER
+			-- node provider.
+		once
+			create Result.make (connection)
+		end
+
+	user_provider: USER_DATA_PROVIDER
+			-- user provider.
+		once
+			create Result.make (connection)
+		end
+
+
+feature {NONE} -- Implementation Fixture Factories
+
+	default_node: CMS_NODE
+		do
+			Result := custom_node ("Default content", "default summary", "Default")
+		end
+
+	custom_node (a_content, a_summary, a_title: READABLE_STRING_32): CMS_NODE
+		do
+			create Result.make (a_content, a_summary, a_title)
+		end
+end
+
+