Enum DataModelEntities 

pub enum DataModelEntities {
    All,
    Rooted,
}

Which STEP instances the data model’s entities table carries.

OPT-IN, defaulting to Self::All, because the default table is a public payload: a client that looks up a non-rooted instance by id (an IfcCartesianPoint, an IfcPropertySingleValue) keeps working, and a default request writes and reads exactly the bytes it did before #6034.

Self::Rooted is for the clients that only ever look up objects. On a large architectural model about five in six entity rows are geometry and property plumbing with no GlobalId (IfcPolyLoop, IfcFace, IfcCartesianPoint, IfcPropertySingleValue, …), none of which another table of the data model points at: property values are already flattened into the properties table, quantities into the quantities table.

The two variants are cached under separate keys (see routes::parse::cache_keys::data_model_cache_key), so a warm cache can never answer one with the other.

Variants

All

Every STEP instance in the file. The only behaviour before #6034.

Rooted

Only rooted entities (IfcRoot subtypes, the ones carrying a GlobalId), plus every non-rooted instance another table of the same data model references by id, so no relation dangles. See retain_rooted_entities.

Implementations

impl DataModelEntities

pub(crate) fn cache_infix(self) -> &'static str

The data-model cache-key infix naming this variant. Empty for Self::All, so a default request keeps hitting the entries already on disk.

pub(crate) fn apply(self, data_model: &mut DataModel)

Narrow data_model’s entities table to this variant. A no-op for Self::All; every other table is left untouched either way.

Trait Implementations

impl Clone for DataModelEntities

fn clone(&self) -> DataModelEntities

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DataModelEntities

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DataModelEntities

fn default() -> DataModelEntities

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for DataModelEntities

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for DataModelEntities

fn eq(&self, other: &DataModelEntities) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for DataModelEntities

impl Eq for DataModelEntities

impl StructuralPartialEq for DataModelEntities