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Improve migration docs for with-transaction

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Sean Corfield 2019-07-16 12:36:19 -07:00
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doc/migration-from-clojure-java-jdbc.md
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@ -86,7 +86,7 @@ These are mostly drawn from [Issue #5](https://github.com/seancorfield/next-jdbc
* Keyword options no longer end in `?` -- for consistency (in `clojure.java.jdbc`, some flag options ended in `?` and some did not; also some options that ended in `?` accepted non-`Boolean` values, e.g., `:as-arrays?` and `:explain?`), * Keyword options no longer end in `?` -- for consistency (in `clojure.java.jdbc`, some flag options ended in `?` and some did not; also some options that ended in `?` accepted non-`Boolean` values, e.g., `:as-arrays?` and `:explain?`),
* `with-db-connection` has been replaced by just `with-open` containing a call to `get-connection`, * `with-db-connection` has been replaced by just `with-open` containing a call to `get-connection`,
* `with-transaction` can take a `:rollback-only` option, but there is no way to change a transaction to rollback _dynamically_; throw an exception instead (all transactions roll back on an exception) * `with-transaction` can take a `:rollback-only` option, but there is no built-in way to change a transaction to rollback _dynamically_; either throw an exception (all transactions roll back on an exception) or call `.rollback` directly on the `java.sql.Connection` object (see [Manual Rollback Inside a Transactions](/doc/transactions.md#manual-rollback-inside-a-transaction) and the following section about save points),
* The extension points for setting parameters and reading columns are now `SettableParameter` and `ReadableColumn` protocols. * The extension points for setting parameters and reading columns are now `SettableParameter` and `ReadableColumn` protocols.
[<: `datafy`, `nav`, and `:schema`](/doc/datafy-nav-and-schema.md) [<: `datafy`, `nav`, and `:schema`](/doc/datafy-nav-and-schema.md)