ALife.Creatur.Database.FileSystem

A ridiculously simple database that stores each record in a separate file. The name of the file is the record's key.

Documentation

data FSDatabase r

A simple database where each record is stored in a separate file, and the name of the file is the record's key.

Instances

Eq (FSDatabase r)

Defined in ALife.Creatur.Database.FileSystem

Methods

(==) :: FSDatabase r -> FSDatabase r -> Bool

(/=) :: FSDatabase r -> FSDatabase r -> Bool

Show (FSDatabase r)

Defined in ALife.Creatur.Database.FileSystem

Methods

showsPrec :: Int -> FSDatabase r -> ShowS

show :: FSDatabase r -> String

showList :: [FSDatabase r] -> ShowS

Database (FSDatabase r)

Defined in ALife.Creatur.Database.FileSystem

Associated Types

type DBRecord (FSDatabase r)

Methods

keys :: StateT (FSDatabase r) IO [String]

numRecords :: StateT (FSDatabase r) IO Int

archivedKeys :: StateT (FSDatabase r) IO [String]

lookup :: String -> StateT (FSDatabase r) IO (Either String (DBRecord (FSDatabase r)))

lookupInArchive :: String -> StateT (FSDatabase r) IO (Either String (DBRecord (FSDatabase r)))

readAll :: StateT (FSDatabase r) IO [Either String (DBRecord (FSDatabase r))]

readAllInArchive :: StateT (FSDatabase r) IO [Either String (DBRecord (FSDatabase r))]

store :: DBRecord (FSDatabase r) -> StateT (FSDatabase r) IO ()

delete :: String -> StateT (FSDatabase r) IO ()

type DBRecord (FSDatabase r)

Defined in ALife.Creatur.Database.FileSystem

type DBRecord (FSDatabase r) = r

mkFSDatabase :: FilePath -> FSDatabase r

mkFSDatabase d (re)creates the FSDatabase in the directory d.