Copyright	(c) 2014-2021 Amy de Buitléir
License	BSD-style
Maintainer	amy@nualeargais.ie
Stability	experimental
Portability	portable
Safe Haskell	None
Language	Haskell2010

ALife.Creatur.Database.CachedFileSystem

Description

A database that stores each record in a separate file and maintains a cache of recently-accessed records. The name of the file is the record's key.

Synopsis

data CachedFSDatabase r
mkCachedFSDatabase :: FilePath -> Int -> CachedFSDatabase r

Documentation

data CachedFSDatabase r Source #

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

Instances

Instances details

Eq r => Eq (CachedFSDatabase r) Source #
Instance details Defined in ALife.Creatur.Database.CachedFileSystemInternal Methods (==) :: CachedFSDatabase r -> CachedFSDatabase r -> Bool # (/=) :: CachedFSDatabase r -> CachedFSDatabase r -> Bool #
Show r => Show (CachedFSDatabase r) Source #
Instance details Defined in ALife.Creatur.Database.CachedFileSystemInternal Methods showsPrec :: Int -> CachedFSDatabase r -> ShowS # show :: CachedFSDatabase r -> String # showList :: [CachedFSDatabase r] -> ShowS #
SizedRecord r => Database (CachedFSDatabase r) Source #
Instance details Defined in ALife.Creatur.Database.CachedFileSystemInternal Associated Types type DBRecord (CachedFSDatabase r) Source # Methods keys :: StateT (CachedFSDatabase r) IO [String] Source # numRecords :: StateT (CachedFSDatabase r) IO Int Source # archivedKeys :: StateT (CachedFSDatabase r) IO [String] Source # lookup :: String -> StateT (CachedFSDatabase r) IO (Either String (DBRecord (CachedFSDatabase r))) Source # lookupInArchive :: String -> StateT (CachedFSDatabase r) IO (Either String (DBRecord (CachedFSDatabase r))) Source # readAll :: StateT (CachedFSDatabase r) IO [Either String (DBRecord (CachedFSDatabase r))] Source # readAllInArchive :: StateT (CachedFSDatabase r) IO [Either String (DBRecord (CachedFSDatabase r))] Source # store :: DBRecord (CachedFSDatabase r) -> StateT (CachedFSDatabase r) IO () Source # delete :: String -> StateT (CachedFSDatabase r) IO () Source #
type DBRecord (CachedFSDatabase r) Source #
Instance details Defined in ALife.Creatur.Database.CachedFileSystemInternal type DBRecord (CachedFSDatabase r) = r

mkCachedFSDatabase :: FilePath -> Int -> CachedFSDatabase r Source #

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