ALife.Creatur.Database.CachedFileSystem

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.

Documentation

data CachedFSDatabase 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 r => Eq (CachedFSDatabase r)

Defined in ALife.Creatur.Database.CachedFileSystemInternal

Methods

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

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

Show r => Show (CachedFSDatabase r)

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)

Defined in ALife.Creatur.Database.CachedFileSystemInternal

Associated Types

type DBRecord (CachedFSDatabase r)

Methods

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

numRecords :: StateT (CachedFSDatabase r) IO Int

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

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

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

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

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

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

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

type DBRecord (CachedFSDatabase r)

Defined in ALife.Creatur.Database.CachedFileSystemInternal

type DBRecord (CachedFSDatabase r) = r

mkCachedFSDatabase :: FilePath -> Int -> CachedFSDatabase r

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