# HG changeset patch
# User Julien Cristau <julien.cristau@logilab.fr>
# Date 1405524055 -7200
# Node ID 5b48dcc02be1404c938a8a82a88fe7c12048c3c0
# Parent  152c09c2f0eded5701acd87ca82d3f839f2de10f
[hooks/syncschema] avoid altering a dropped table

If the constraint's rdef is being removed, CWConstraintDelOp doesn't
need to do anything.  Otherwise it may try to alter a removed
table/column.  Closes #4154549

diff -r 152c09c2f0ed -r 5b48dcc02be1 hooks/syncschema.py
--- a/hooks/syncschema.py	Thu Jun 12 09:59:55 2014 +0200
+++ b/hooks/syncschema.py	Wed Jul 16 17:20:55 2014 +0200
@@ -653,6 +653,9 @@
         else:
             self.critical('constraint %s for rdef %s was missing or already removed',
                           self.oldcstr, rdef)
+        if cnx.deleted_in_transaction(rdef.eid):
+            # don't try to alter a table that's going away (or is already gone)
+            return
         # then update database: alter the physical schema on size/unique
         # constraint changes
         syssource = cnx.repo.system_source