xuml-metamodel

The empty Shlaer-Mellor executable-UML metamodel schema, packaged as a single versioned wheel.

It ships a matched pair of artifacts, both generated from one parse of the SM metamodel by make-xuml-repo:

• mmdb.ral — the empty metamodel database schema (runtime data, loaded into TclRAL)
• mmclass_nt.py — the _i named tuples, one per metamodel class (imported code)

Because each named tuple's fields are exactly the corresponding relvar's attributes, the two files must always come from the same generation. Shipping them together in one wheel, stamped with a single schema version, guarantees a consumer can never mix mismatched halves.

Usage

from xuml_metamodel import metamodel_version, mmdb_path
from xuml_metamodel.mmclass_nt import Attribute_i, Class_i  # etc.

print(metamodel_version)   # e.g. "1.0.0"
schema = mmdb_path()       # absolute path to the packaged mmdb.ral

Versioning

The wheel version is the metamodel schema version (see schema_version.txt in make-xuml-repo). It is independent of the make-xuml-repo tool version and is bumped only when the metamodel classes or attributes change:

• major / minor — attribute rename/reorder or class removal (breaks tuple compatibility)
• patch — additive, backward-compatible changes

Consumers (e.g. xuml-populate) pin a compatible range so the tuples and schema they load can never drift apart.

Rebuilding

This package is assembled from freshly generated artifacts by build_package.py in the make-xuml-repo repo. It is not edited by hand.