Function _do_configure_registries

lib/sqlalchemy/orm/mapper.py:4225–4280

(
    registries: Set[_RegistryType], cascade: bool
)

@util.preload_module("sqlalchemy.orm.decl_api")
def _do_configure_registries(
    registries: Set[_RegistryType], cascade: bool
) -> Iterator[registry]:
    registry = util.preloaded.orm_decl_api.registry

    orig = set(registries)

    for reg in registry._recurse_with_dependencies(registries):
        if reg._new_mappers:
            reg.dispatch.before_configured(reg)

        has_skip = False

        for mapper in reg._mappers_to_configure():
            run_configure = None

            for fn in mapper.dispatch.before_mapper_configured:
                run_configure = fn(mapper, mapper.class_)
                if run_configure is EXT_SKIP:
                    has_skip = True
                    break
            if run_configure is EXT_SKIP:
                continue

            if getattr(mapper, "_configure_failed", False):
                e = sa_exc.InvalidRequestError(
                    "One or more mappers failed to initialize - "
                    "can't proceed with initialization of other "
                    "mappers. Triggering mapper: '%s'. "
                    "Original exception was: %s"
                    % (mapper, mapper._configure_failed)
                )
                e._configure_failed = mapper._configure_failed  # type: ignore
                raise e

            if not mapper.configured:
                try:
                    mapper._post_configure_properties()
                    mapper._expire_memoizations()
                    mapper.dispatch.mapper_configured(mapper, mapper.class_)
                except Exception:
                    exc = sys.exc_info()[1]
                    if not hasattr(exc, "_configure_failed"):
                        mapper._configure_failed = exc
                    raise

        if reg._new_mappers:
            yield reg
        if not has_skip:
            reg._new_mappers = False

        if not cascade and reg._dependencies.difference(orig):
            raise sa_exc.InvalidRequestError(
                "configure was called with cascade=False but "
                "additional registries remain"
            )