Factory

A factory is the registry that resolves a configured name to a concrete plugin class. Each plugin family maintains its own factory, which holds every variant registered for that family and produces the one named in a configuration slot.

Registry model

A factory is a name-keyed map from plugin name to plugin class. Registries are per-family and isolated: registering a normalizer affects only the normalizer factory, so the same name can exist independently across families. Names are stored case-insensitively.

Two forms exist:

• the base factory, which maps a name to its class and can instantiate it directly, and

• the plugin factory, which additionally runs the plugin’s configuration validation and constructs the instance from the validated result. This is the form used by the configuration-driven families throughout the framework.

Because registration is local to a family, introducing a new variant is a matter of defining the plugin and registering it with its family’s factory. The call sites that select a plugin by name require no change.