Database

cihai.db.Database wraps the SQLAlchemy engine, metadata, and session that datasets share. Use it directly only when you need raw database access instead of dataset helpers.

Cihai core functionality.

class cihai.db.Database
class[source]
class[source]
class cihai.db.Database

Bases: object

Cihai SQLAlchemy instance.

base: AutomapBase
attribute
attribute
base: AutomapBase

sqlalchemy.ext.automap.AutomapBase instance.

__init__(config)
method[source]
method[source]
__init__(config)
Parameters:

config (ConfigDict)

Return type:

None

engine: Engine
attribute
attribute
engine: Engine

sqlalchemy.engine.Engine instance.

metadata: MetaData
attribute
attribute
metadata: MetaData

sqlalchemy.schema.MetaData instance.

session: Session
attribute
attribute
session: Session

sqlalchemy.orm.session.Session instance.

reflect_db()
method[source]
method[source]
reflect_db()

No-op to reflect db info.

This is available as a method so the database can be reflected outside initialization (such bootstrapping unihan during CLI usage).

Return type:

None