merge from HEAD

Author: Richard Jones

CHANGES.txt

@@ -12,6 +12,7 @@ Fixed:
   discarding of the message
 - mailgw can override the MAIL_DEFAULT_CLASS
 - handle Py2.3+ datetime objects as Date specs (sf bug 971300)
+- use row locking in MySQL newid() (sf bug 1034211)
 
 
 2004-07-21 0.7.6

doc/index.txt

@@ -96,6 +96,7 @@ Christophe Kalt,
 Brian Kelley,
 James Kew,
 Sheila King,
+Michael Klatt,
 Bastian Kleineidam,
 Axel Kollmorgen,
 Detlef Lannert,

roundup/backends/back_mysql.py

@@ -466,7 +466,7 @@ def newid(self, classname):
         ''' Generate a new id for the given class
         '''
         # get the next ID
-        sql = 'select num from ids where name=%s'%self.arg
+        sql = 'select num from ids where name=%s FOR UPDATE'%self.arg
         if __debug__:
             print >>hyperdb.DEBUG, 'newid', (self, sql, classname)
         self.cursor.execute(sql, (classname, ))