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[IMP] models.py: try in place column cast before copy

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Christophe Simonis
2015-02-16 12:00:40 +01:00
parent 4f20c45a45
commit 84eea02ac5
1 changed files with 9 additions and 4 deletions
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openerp/models.py
+9 -4
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@@ -2522,10 +2522,15 @@ class BaseModel(object):
if (f_pg_type==c[0]) and (f._type==c[1]):
if f_pg_type != f_obj_type:
ok = True
cr.execute('ALTER TABLE "%s" RENAME COLUMN "%s" TO __temp_type_cast' % (self._table, k))
cr.execute('ALTER TABLE "%s" ADD COLUMN "%s" %s' % (self._table, k, c[2]))
cr.execute(('UPDATE "%s" SET "%s"= __temp_type_cast'+c[3]) % (self._table, k))
cr.execute('ALTER TABLE "%s" DROP COLUMN __temp_type_cast CASCADE' % (self._table,))
try:
with cr.savepoint():
cr.execute('ALTER TABLE "%s" ALTER COLUMN "%s" TYPE %s' % (self._table, k, c[2]), log_exceptions=False)
except psycopg2.NotSupportedError:
# can't do inplace change -> use a casted temp column
cr.execute('ALTER TABLE "%s" RENAME COLUMN "%s" TO __temp_type_cast' % (self._table, k))
cr.execute('ALTER TABLE "%s" ADD COLUMN "%s" %s' % (self._table, k, c[2]))
cr.execute('UPDATE "%s" SET "%s"= __temp_type_cast%s' % (self._table, k, c[3]))
cr.execute('ALTER TABLE "%s" DROP COLUMN __temp_type_cast CASCADE' % (self._table,))
cr.commit()
_schema.debug("Table '%s': column '%s' changed type from %s to %s",
self._table, k, c[0], c[1])