-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Relational optimiser and code generator
--   
--   The library provides FFI bindings to the Pathfinder relational
--   optimiser and code generator. Specifically, the library allows for
--   
--   <ul>
--   <li>optimisation of table algebra (a variant of relational algebra)
--   expressions</li>
--   <li>and compilation of table algebra expressions into SQL:1999
--   queries</li>
--   </ul>
--   
--   Note that the C source bundle of Pathfinder is also included in this
--   package. The C sources are automatically built along with the Haskell
--   FFI bindings. There is no need to download and install Pathfinder
--   separately.
--   
--   More information about Pathfinder is available from the following web
--   page:
--   
--   <ul>
--   <li><a>http://db.inf.uni-tuebingen.de/research/pathfinder</a></li>
--   </ul>
@package Pathfinder
@version 0.5.10

module Database.Pathfinder

-- | Relational optimiser and code generator
pathfinder :: XmlString -> OptString -> OutputFormat -> IO (Either ErrorString OutputString)
data OutputFormat
OutputSql :: OutputFormat
OutputXml :: OutputFormat
OutputDot :: OutputFormat
type XmlString = String
type ErrorString = String
type OutputString = String
type OptString = String