Struct SourceSchema 

pub struct SourceSchema {
    pub columns: Vec<Box<str>>,
    pub column_types: Vec<ValueType>,
    pub primary_key: Vec<usize>,
    pub sort: Vec<(usize, bool)>,
}

Static, user-declared source table metadata: columns, primary key, and the table’s default sort. This is the table-registration boundary type — what Graph::add_source and the builder’s resolve callback speak.

It deliberately carries no relationships and no singular: a relationship is a property of a query (the explicit sub/EXISTS correlation in the AST), not of a source table, and the engine derives the per-query relationship slots from the AST at build time (see query_local_slot_names). The type makes it impossible to declare one on a source. Widen to a Schema (empty relationships, singular = false) via From/SourceSchema::into_schema when an operator needs the richer view/pipeline shape; the build path then installs the query-derived slots over the empty relationships.

Fields

columns: Vec<Box<str>>

Column names, in order (positional against source rows).

column_types: Vec<ValueType>

Declared logical column types, parallel to columns (design 226 §4.1). SourceSchema::new defaults every column to ValueType::Number; the homes that know the real declared types (the replica’s decltype discovery, the SQLite leaf) install them via SourceSchema::with_column_types.

primary_key: Vec<usize>

Primary-key column indices (into columns).

sort: Vec<(usize, bool)>

The table’s default sort — (col_idx, ascending) pairs.

Implementations

impl SourceSchema

pub fn new( columns: Vec<&str>, primary_key: Vec<usize>, sort: Vec<(usize, bool)>, ) -> SourceSchema

Construct a source schema. Same call shape as Schema::new, so existing Schema::new(vec!["id", …], …) source fixtures port over by renaming.

pub fn with_column_types(self, column_types: Vec<ValueType>) -> SourceSchema

Builder: install the declared column types (parallel to columns, design 226 §4.1), replacing SourceSchema::new’s all-Number default.

pub fn col_id(&self, name: &str) -> Option<usize>

Resolve a column name to its ColId. None if not present.

pub fn into_schema(self) -> Schema

Widen to a Schema with no relationships and singular = false — the view/pipeline shape an operator sees. Moves the columns/key/sort (no clone); the build path replaces relationships with the query-derived slot tree.

Trait Implementations

impl Clone for SourceSchema

fn clone(&self) -> SourceSchema

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SourceSchema

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

Formats the value using the given formatter.

impl From<SourceSchema> for Schema

fn from(s: SourceSchema) -> Schema

Converts to this type from the input type.