Struct mz_sql::query_model::attribute::core::RequiredAttributes

pub(crate) struct RequiredAttributes {
    attributes: Vec<Box<dyn Attribute>>,
}

A struct that represents an Attribute set that needs to be present for some follow-up logic (most likely transformation, but can also be pretty-printing or something else).

Fields

attributes: Vec<Box<dyn Attribute>>

Implementations

impl RequiredAttributes

pub(crate) fn derive(&self, model: &mut Model, root: BoxId)

Derive attributes for the entire model.

The currently implementation assumes that all attributes can be derived in a single bottom up pass.

Trait Implementations

impl From<HashSet<Box<dyn Attribute + 'static, Global>, RandomState>> for RequiredAttributes

fn from(attributes: HashSet<Box<dyn Attribute>>) -> Self

Completes the set attributes with transitive dependencies and wraps the result in a representation that is suitable for attribute derivation in a minimum number of passes.