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Optimized ExclusionConstraint.validate() a bit. 

References to excluded fields are omitted in the replacement_map, so
there is no need to replace references before checking for exclusions.
This commit is contained in:
Mariusz Felisiak 2022-08-11 06:54:38 +02:00
parent fc0942ada4
commit 8533a6af8d
1 changed files with 7 additions and 8 deletions
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13
django/contrib/postgres/constraints.py
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@ -202,16 +202,15 @@ class ExclusionConstraint(BaseConstraint):
for idx, (expression, operator) in enumerate(self.expressions):
if isinstance(expression, str):
expression = F(expression)
if isinstance(expression, F):
if exclude and expression.name in exclude:
return
rhs_expression = expression.replace_references(replacement_map)
else:
rhs_expression = expression.replace_references(replacement_map)
if exclude:
for expr in rhs_expression.flatten():
if isinstance(expression, F):
if expression.name in exclude:
return
else:
for expr in expression.flatten():
if isinstance(expr, F) and expr.name in exclude:
return
rhs_expression = expression.replace_references(replacement_map)
# Remove OpClass because it only has sense during the constraint
# creation.
if isinstance(expression, OpClass):