ALife.Creatur.Database.CachedFileSystemInternal

A module containing private CachedFileSystem internals. Most developers should use CachedFileSystem instead. This module is subject to change without notice.

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.

Constructors

CachedFSDatabase

Fields

database :: FSDatabase r

cache :: [r]

maxCacheSize :: Int

Instances

Eq r => Eq (CachedFSDatabase r)

Show r => Show (CachedFSDatabase r)

SizedRecord r => Database (CachedFSDatabase r)

type DBRecord (CachedFSDatabase r) = r

withFSDB :: Monad m => StateT (FSDatabase r) m a -> StateT (CachedFSDatabase r) m a

fromCache :: Record r => String -> StateT (CachedFSDatabase r) IO (Maybe r)

addToCache :: SizedRecord r => r -> StateT (CachedFSDatabase r) IO ()

deleteByKeyFromCache :: SizedRecord r => String -> StateT (CachedFSDatabase r) IO ()

deleteFromCache :: SizedRecord r => r -> StateT (CachedFSDatabase r) IO ()

trimCache :: SizedRecord r => StateT (CachedFSDatabase r) IO ()

trim :: SizedRecord r => Int -> [r] -> [r]

listSize :: SizedRecord r => [r] -> Int

mkCachedFSDatabase :: FilePath -> Int -> CachedFSDatabase r

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