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doobie v0.2.1 Release Notes

  • 🚀 This is a minor follow-up release, primarily to add support for some PostgreSQL features and other odds and ends reported by users. Thanks to users and contributors for their help!

    ➕ Additions:

    • ➕ Added Transactor to wrap an existing DataSource. See Chapter 12 for more information.
    • ➕ Added support for PostGIS and PostgreSQL enum types. See Chapter 13 for more information.
    • ➕ Added combinators for batch updates. See Chapter 7 for more information.
    • ➕ Added Composite support for HList; anywhere you could map a product or tuple type in 0.2.0 you can now also use a shapeless HList.
    • ➕ Added Atom support for scalaz.Maybe; anywhere you could map an Option type in 0.2.0 you can now also use Maybe.
    • ➕ Added .optionT method on Query and Query0.
    • ➕ Added an example that exposes a PostgreSQL NOTIFY channel as an scalaz-stream Process.

    👌 Improvements:

    • The 22-parameter limit on the sql interpolator has been increased to 50, and should go away entirely by 0.3.0 at the latest. There are no other arity limits in doobie.
    • ⚡️ All Query and Update constructions are now supported for typechecking with Specs2 and YOLO mode.
    • Many improvements in book of doobie.
    • Tidied up examples a bit.

    ⬆️ Upgrades:

    • ⚡️ Updated to Scala 2.11.6.
    • ⚡️ Updated to scalaz 7.1.1 and scalaz-stream 0.6a
    • ⚡️ Updated to tut 0.3.1 (build only; not user-facing).
    • ⚡️ Updated to Specs2 3.9.4

    🐛 Bug Fixes:

    • 🛠 Fixed problem with typechecking BOOLEAN column mappings.
    • 🛠 Fixed driver classloading problem with HikariTransactor.