hasql: A minimalistic general high level API for relational databases

A robust and concise yet powerful API for communication with arbitrary relational databases using SQL.

Features:

• Concise and crisp API. Just a few functions and two monads doing all the boilerplate job for you.

• A powerful transaction abstraction, which provides an automated resolution of conflicts. The API ensures that you're only able to perform a specific set of actions in the transaction context, which allows Hasql to safely resolve conflicting transactions by automatically retrying them. This is much inspired by STM and ST.

• Support for cursors. Allows to fetch virtually limitless result sets in a constant memory using streaming.

• Employment of prepared statements. Every statement you emit gets prepared and cached. This raises the performance of the backend.

• Automated management of resources related to connections, transactions and cursors.

• A built-in connections pool.

• Compile-time generation of templates. You just can't write a statement with an incorrect number of placeholders.

• Ability to map to any types actually supported by the backend.

Links:

• Benchmarks analysis.

• Basic tutorial-demo.

• PostgreSQL backend.

Modules

[Last Documentation]

Downloads

• hasql-0.3.0.tar.gz [browse] (Cabal source package)
• Package description (revised from the package)

Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

Package maintainers

• NikitaVolkov

For package maintainers and hackage trustees

• edit package information

Candidates

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