Building Definition Language

A compliant BDL implementation shall provide, at minimum:

a persistent identity model;

an extensible type system;

explicit unit support;

entity declarations;

property declarations;

typed relationships;

references;

spatial representation;

Component, Cartridge, and Interface representation;

capability and dependency representation;

constraints and assertions;

configuration status;

versioning;

provenance;

validation errors;

human-readable representation;

machine-readable serialization.

A minimum building definition shall contain:

building Example_Building {

id: "s05:building:example-001";

bdl_version: "1.0";

configuration: as_designed;

unit_system: SI;

coordinate_system: @Building_Coordinates;

profiles: [@Base_System05_Profile];

}

A building definition shall be invalid if it lacks:

a Building ID;

BDL version;

configuration status;

coordinate context where spatial information is present;

unit context where engineering quantities are present;

resolvable references;