schema.serde.distribution.FunctionRegistry

A dictionary-like container for custom functions used in serialization.

View aliases

Main aliases

`schema.serde.eda_spec.FunctionRegistry`, `schema.serde.meridian_serde.FunctionRegistry`

schema.serde.distribution.FunctionRegistry(
    *args, **kwargs
)

This class extends dict and provides methods for hashing, validation, and key retrieval based on function identity, required for safe serialization and deserialization of models that use custom functions.

Args
*args	Positional arguments to pass to the dictionary constructor.
**kwargs	Keyword arguments to pass to the dictionary constructor.

Attributes
hashed_registry	Returns hashed function registry with keys mapped to hashed function code.

Methods

get_function_key

View source

get_function_key(
    func: Callable[..., Any]
) -> (str | None)

Returns the function key for the given function from the registry.

validate

View source

validate(
    stored_hashed_function_registry: dict[str, str]
)

Validates whether functions within the registry have changed.

It checks that all functions listed in stored_hashed_function_registry are present in this registry, and that their source code hash matches the stored hash.

Args
stored_hashed_function_registry	The hashed function registry from the serialized object.

Raises
ValueError	If a function is missing or a hash mismatch is detected.