Struct Mapping 

pub struct Mapping {
    pub models: IndexMap<ModelId, Model>,
}

Defines the correspondence between app-level models and database-level tables.

The mapping is constructed during schema building and remains immutable at runtime. It provides the translation layer that enables the query engine to convert model-oriented statements into table-oriented statements during the lowering phase.

Fields

models: IndexMap<ModelId, Model>

Per-model mappings indexed by model identifier.

Implementations

impl Mapping

pub fn model(&self, id: impl Into<ModelId>) -> &Model

Returns the mapping for the specified model.

Panics

Panics if the model ID does not exist in the mapping.

pub fn model_mut(&mut self, id: impl Into<ModelId>) -> &mut Model

Returns a mutable reference to the mapping for the specified model.

Panics

Panics if the model ID does not exist in the mapping.

Trait Implementations

impl Clone for Mapping

fn clone(&self) -> Mapping

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Mapping

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

Formats the value using the given formatter.