Editorial Model: first shot at the SQL migration handler (bye-bye django)

Lodel/utils/mosql.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+
+## @package Lodel.utils.mosql
+# @brief Helper function to use mosql library
+#
+# define create_database and drop_database Query to manipulate databases
+# define create, drop and alter Query to manipulate tables
+# define create_user, delete_user and grant to manipulate user and rights
+
+from mosql.util import Clause, Statement, Query, value, identifier, concat_by_comma, paren
+
+# chain definitions
+column_list = (identifier, concat_by_comma, paren)
+
+# Clauses
+create_clause = Clause('create table', alias='create', no_argument=True)
+if_not_exists = Clause('if not exists', alias='if_not_exists', no_argument=True, default=True)
+table_clause = Clause('table', (identifier, ), alias='table', hidden=True)
+character_clause = Clause('CHARACTER SET', (value, ), alias='character')
+column_clause = Clause('column', column_list, alias='column', hidden=True)
+
+alter_clause = Clause('alter table', (identifier, ), alias='table')
+add_clause = Clause('add column', (identifier, ), alias='column')
+
+# Statements
+create_statement = Statement([create_clause, if_not_exists, table_clause, column_clause, character_clause])
+alter_add_statement = Statement([alter_clause, add_clause])
+
+# queries
+create = Query(create_statement, ('table', 'column', 'if_not_exists'), {'create':True})
+alter_add = Query(alter_add_statement, ('table', 'column'))