CADETProcess.dataStructure.diskcache.DillDisk

class CADETProcess.dataStructure.diskcache.DillDisk(directory, min_file_size=0, pickle_protocol=0)

Bases: Disk

Cache key and value serialization for SQLite database and files.

fetch(mode: int, filename: str, value: Any, read: bool) → Any

Convert fields mode, filename, and value from Cache table to value.

Parameters:

• mode (int) – value mode raw, binary, text, or pickle

• filename (str) – filename of corresponding value

• value – database value

• read (bool) – when True, return an open file handle

Returns:

corresponding Python value

Raises:

IOError if the value cannot be read

get(key: Any, raw: Any) → Any

Convert fields key and raw from Cache table to key.

Parameters:

• key – database key to convert

• raw (bool) – flag indicating raw database storage

Returns:

corresponding Python key

put(key: Any) → None

Convert key to fields key and raw for Cache table.

Parameters:

key – key to convert

Returns:

(database key, raw boolean) pair

store(value: Any, read: bool, key: Any = ('UNKNOWN',)) → tuple[int, int, str | None, Any | memoryview]

Convert value to fields size, mode, filename, and value for Cache table.

Parameters:

• value – value to convert

• read (bool) – True when value is file-like object

• key – key for item (default UNKNOWN)

Returns:

(size, mode, filename, value) tuple for Cache table