Module: move REGEXP definition to every get_db() call

also remove some self.conn stuff that no one used anymore

Module.py

@@ -43,17 +43,6 @@ class Module(object):
 
         self.is_shutdown = False
 
-        # open database connection
-        dbfile = self.config.get('dr.botzo', 'database')
-        self.conn = sqlite3.connect(dbfile)
-        self.conn.row_factory = sqlite3.Row
-
-        # setup regexp function in sqlite
-        def regexp(expr, item):
-            reg = re.compile(expr, re.IGNORECASE)
-            return reg.search(item) is not None
-        self.conn.create_function('REGEXP', 2, regexp)
-
         # set up database for this module
         self.db_init()
 
@@ -187,6 +176,13 @@ class Module(object):
         dbfile = self.config.get('dr.botzo', 'database')
         conn = sqlite3.connect(dbfile)
         conn.row_factory = sqlite3.Row
+
+        # setup regexp function in sqlite
+        def regexp(expr, item):
+            reg = re.compile(expr, re.IGNORECASE)
+            return reg.search(item) is not None
+        conn.create_function('REGEXP', 2, regexp)
+
         return conn
 
     def db_module_registered(self, modulename):