py3: _mysql.string_literal() returns bytes().

And _mysql/mysqldb API (_mysql.connection.query()) converts the query string to
bytes() (additionally, cursor.execute(QUERY, ARGS) calls query() after
converting everything to bytes() too).

product/CMFActivity/Activity/SQLDict.py

@@ -85,7 +85,7 @@ class SQLDict(SQLBase):
       uid = line.uid
       original_uid = path_and_method_id_dict.get(key)
       if original_uid is None:
-        sql_method_id = " AND method_id = %s AND group_method_id = %s" % (
+        sql_method_id = b" AND method_id = %s AND group_method_id = %s" % (
           quote(method_id), quote(line.group_method_id))
         m = Message.load(line.message, uid=uid, line=line)
         merge_parent = m.activity_kw.get('merge_parent')
@@ -102,11 +102,11 @@ class SQLDict(SQLBase):
             uid_list = []
             if path_list:
               # Select parent messages.
-              result = Results(db.query("SELECT * FROM message"
-                " WHERE processing_node IN (0, %s) AND path IN (%s)%s"
-                " ORDER BY path LIMIT 1 FOR UPDATE" % (
+              result = Results(db.query(b"SELECT * FROM message"
+                b" WHERE processing_node IN (0, %d) AND path IN (%s)%s"
+                b" ORDER BY path LIMIT 1 FOR UPDATE" % (
                   processing_node,
-                  ','.join(map(quote, path_list)),
+                  b','.join(map(quote, path_list)),
                   sql_method_id,
                 ), 0))
               if result: # found a parent
@@ -119,11 +119,11 @@ class SQLDict(SQLBase):
                 m = Message.load(line.message, uid=uid, line=line)
             # return unreserved similar children
             path = line.path
-            result = db.query("SELECT uid FROM message"
-              " WHERE processing_node = 0 AND (path = %s OR path LIKE %s)"
-              "%s FOR UPDATE" % (
+            result = db.query(b"SELECT uid FROM message"
+              b" WHERE processing_node = 0 AND (path = %s OR path LIKE %s)"
+              b"%s FOR UPDATE" % (
                 quote(path), quote(path.replace('_', r'\_') + '/%'),
-                sql_method_id,
+                sql_method_id.encode(),
               ), 0)[1]
             reserve_uid_list = [x for x, in result]
             uid_list += reserve_uid_list
@@ -132,8 +132,8 @@ class SQLDict(SQLBase):
               reserve_uid_list.append(uid)
           else:
             # Select duplicates.
-            result = db.query("SELECT uid FROM message"
-              " WHERE processing_node = 0 AND path = %s%s FOR UPDATE" % (
+            result = db.query(b"SELECT uid FROM message"
+              b" WHERE processing_node = 0 AND path = %s%s FOR UPDATE" % (
                 quote(path), sql_method_id,
               ), 0)[1]
             reserve_uid_list = uid_list = [x for x, in result]

product/CMFActivity/ActivityTool.py

@@ -1413,7 +1413,7 @@ class ActivityTool (BaseTool):
       path = None if obj is None else '/'.join(obj.getPhysicalPath())
       db = self.getSQLConnection()
       quote = db.string_literal
-      return bool(db.query("(%s)" % ") UNION ALL (".join(
+      return bool(db.query(b"(%s)" % b") UNION ALL (".join(
         activity.hasActivitySQL(quote, path=path, **kw)
         for activity in six.itervalues(activity_dict)))[1])
 

product/ZMySQLDA/db.py

@@ -111,6 +111,7 @@ from Shared.DC.ZRDB.TM import TM
 from DateTime import DateTime
 from zLOG import LOG, ERROR, WARNING
 from ZODB.POSException import ConflictError
+from Products.ERP5Type.Utils import str2bytes
 
 hosed_connection = (
     CR.SERVER_GONE_ERROR,
@@ -203,7 +204,7 @@ def ord_or_None(s):
         return ord(s)
 
 match_select = re.compile(
-    r'(?:SET\s+STATEMENT\s+(.+?)\s+FOR\s+)?SELECT\s+(.+)',
+    rb'(?:SET\s+STATEMENT\s+(.+?)\s+FOR\s+)?SELECT\s+(.+)',
     re.IGNORECASE | re.DOTALL,
 ).match
 
@@ -418,12 +419,14 @@ class DB(TM):
         """Execute 'query_string' and return at most 'max_rows'."""
         self._use_TM and self._register()
         desc = None
+        if not isinstance(query_string, bytes):
+          query_string = str2bytes(query_string)
         # XXX deal with a typical mistake that the user appends
         # an unnecessary and rather harmful semicolon at the end.
         # Unfortunately, MySQLdb does not want to be graceful.
-        if query_string[-1:] == ';':
+        if query_string[-1:] == b';':
           query_string = query_string[:-1]
-        for qs in query_string.split('\0'):
+        for qs in query_string.split(b'\0'):
             qs = qs.strip()
             if qs:
                 select_match = match_select(qs)
@@ -432,12 +435,12 @@ class DB(TM):
                     if query_timeout is not None:
                         statement, select = select_match.groups()
                         if statement:
-                            statement += ", max_statement_time=%f" % query_timeout
+                            statement += b", max_statement_time=%f" % query_timeout
                         else:
-                            statement = "max_statement_time=%f" % query_timeout
-                        qs = "SET STATEMENT %s FOR SELECT %s" % (statement, select)
+                            statement = b"max_statement_time=%f" % query_timeout
+                        qs = b"SET STATEMENT %s FOR SELECT %s" % (statement, select)
                     if max_rows:
-                        qs = "%s LIMIT %d" % (qs, max_rows)
+                        qs = b"%s LIMIT %d" % (qs, max_rows)
                 c = self._query(qs)
                 if c:
                     if desc is not None is not c.describe():
@@ -640,7 +643,7 @@ class DeferredDB(DB):
 
     def query(self, query_string, max_rows=1000):
         self._register()
-        for qs in query_string.split('\0'):
+        for qs in query_string.split(b'\0'):
             qs = qs.strip()
             if qs:
                 if match_select(qs):