toasty_core/schema/
mapping.rs

1mod field;
2pub use field::{EnumVariant, Field, FieldEnum, FieldPrimitive, FieldRelation, FieldStruct};
3
4mod model;
5pub use model::{Model, TableToModel};
6
7use super::app::ModelId;
8use indexmap::IndexMap;
9
10/// Defines the correspondence between app-level models and database-level
11/// tables.
12///
13/// The mapping is constructed during schema building and remains immutable at
14/// runtime. It provides the translation layer that enables the query engine to
15/// convert model-oriented statements into table-oriented statements during the
16/// lowering phase.
17#[derive(Debug, Clone)]
18pub struct Mapping {
19    /// Per-model mappings indexed by model identifier.
20    pub models: IndexMap<ModelId, Model>,
21}
22
23impl Mapping {
24    /// Returns the mapping for the specified model.
25    ///
26    /// # Panics
27    ///
28    /// Panics if the model ID does not exist in the mapping.
29    pub fn model(&self, id: impl Into<ModelId>) -> &Model {
30        self.models.get(&id.into()).expect("invalid model ID")
31    }
32
33    /// Returns a mutable reference to the mapping for the specified model.
34    ///
35    /// # Panics
36    ///
37    /// Panics if the model ID does not exist in the mapping.
38    pub fn model_mut(&mut self, id: impl Into<ModelId>) -> &mut Model {
39        self.models.get_mut(&id.into()).expect("invalid model ID")
40    }
41}
toasty_core/schema/mapping.rs

toasty_core/schema/
mapping.rs
