trulens.core.database.orm¶

trulens.core.database.orm ¶

Attributes¶

TYPE_JSON `module-attribute` ¶

TYPE_JSON = Text

Database type for JSON fields.

TYPE_TIMESTAMP `module-attribute` ¶

TYPE_TIMESTAMP = Float

Database type for timestamps.

TYPE_ENUM `module-attribute` ¶

TYPE_ENUM = Text

Database type for enum fields.

TYPE_ID `module-attribute` ¶

TYPE_ID = VARCHAR(256)

Database type for unique IDs.

Classes¶

BaseWithTablePrefix ¶

ORM base class except with __tablename__ defined in terms of a base name and a prefix.

A subclass should set _table_base_name and/or _table_prefix. If it does not set both, make sure to set __abstract__ = True. Current design has subclasses set _table_base_name and then subclasses of that subclass setting _table_prefix as in make_orm_for_prefix.

ORM ¶

Bases: ABC, Generic[T]

Abstract definition of a container for ORM classes.

Functions¶

new_base `cached` ¶

new_base(prefix: str) -> Type[T]

Create a new base class for ORM classes.

Note: This is a function to be able to define classes extending different SQLAlchemy declarative bases. Each different such bases has a different set of mappings from classes to table names. If we only had one of these, our code will never be able to have two different sets of mappings at the same time. We need to be able to have multiple mappings for performing things such as database migrations and database copying from one database configuration to another.

new_orm ¶

new_orm(base: Type[T]) -> Type[ORM[T]]

Create a new orm container from the given base table class.

make_base_for_prefix `cached` ¶

make_base_for_prefix(
    base: Type[T],
    table_prefix: str = DEFAULT_DATABASE_PREFIX,
) -> Type[T]

Create a base class for ORM classes with the given table name prefix.

PARAMETER	DESCRIPTION
`base`	Base class to extend. Should be a subclass of BaseWithTablePrefix. TYPE: `Type[T]`
`table_prefix`	Prefix to use for table names. TYPE: `str` DEFAULT: `DEFAULT_DATABASE_PREFIX`

RETURNS	DESCRIPTION
`Type[T]`	A class that extends `base_type` and sets the table prefix to `table_prefix`.

make_orm_for_prefix `cached` ¶

make_orm_for_prefix(
    table_prefix: str = DEFAULT_DATABASE_PREFIX,
) -> Type[ORM[T]]

Make a container for ORM classes.

This is done so that we can use a dynamic table name prefix and make the ORM classes based on that.

PARAMETER	DESCRIPTION
`table_prefix`	Prefix to use for table names. TYPE: `str` DEFAULT: `DEFAULT_DATABASE_PREFIX`

trulens.core.database.orm¶