Data.CQRS.EventStore.Backend.PostgreSQLUtils

Implementation of a PostgreSQL-based event store.

Documentation

run :: Connection -> ByteString -> [SqlValue] -> IO ()

Execute a query with no result.

sourceQuery :: Connection -> ByteString -> [SqlValue] -> Source (ResourceT IO) [SqlValue]

Source for traversing all the results of a PostgreSQL query.

withTransaction :: Connection -> IO a -> IO a

Execute an IO action with an active transaction.

data SqlValue

Known field types.

Constructors

SqlByteArray (Maybe ByteString)

SqlBlankPaddedString (Maybe ByteString)

SqlBool (Maybe Bool)

SqlInt16 (Maybe Int16)

SqlInt32 (Maybe Int32)

SqlInt64 (Maybe Int64)

SqlFloating (Maybe Double)

SqlVarChar (Maybe Text)

SqlText (Maybe Text)

SqlDate (Maybe Day)

Unmatched (Oid, Maybe ByteString)

Instances

Eq SqlValue

Show SqlValue