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Merge branch 'master' into gwenn-stmt-cache

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John Gallagher
2016-05-17 20:52:52 -05:00
parent e4e17cc5dd e695ed8f03
commit 437a06fca3
3 changed files with 64 additions and 35 deletions
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Changelog.md
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# Version UPCOMING (...)
* BREAKING CHANGE: Creating transactions from a `Connection` or savepoints from a `Transaction`
now take `&mut self` instead of `&self` to correctly represent that transactions within a
connection are inherently nested. While a transaction is alive, the parent connection or
transaction is unusable, so `Transaction` now implements `Deref<Target=Connection>`, giving
access to `Connection`'s methods via the `Transaction` itself.
* Adds `Connection::prepare_cached`. `Connection` now keeps an internal cache of any statements
prepared via this method. The size of this cache defaults to 16 (`prepare_cached` will always
work but may re-prepare statements if more are prepared than the cache holds), and can be