425c5e40ea
This commits lifts the restriction that the outermost atomic block must
be declared with savepoint=False. This restriction was overly cautious.
The logic that makes it safe not to create savepoints for inner blocks
also applies to the outermost block when autocommit is disabled and a
transaction is already active.
This makes it possible to use the ORM after set_autocommit(False).
Previously it didn't work because ORM write operations are protected
with atomic(savepoint=False).
Backport of
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| .. | ||
| examples | ||
| aggregation.txt | ||
| index.txt | ||
| managers.txt | ||
| models.txt | ||
| multi-db.txt | ||
| optimization.txt | ||
| queries.txt | ||
| sql.txt | ||
| tablespaces.txt | ||
| transactions.txt | ||