Struct SchemaLayoutCache 

pub struct SchemaLayoutCache { /* private fields */ }

Cache for SchemaLayout instances.

• Full-table queries: cached by table name
• Projection queries: created fresh (column combinations are too varied to cache effectively)

Implementations

impl SchemaLayoutCache

pub fn new() -> Self

Create a new empty cache

pub fn get_or_create_full( &mut self, table_name: &str, schema: &Table, ) -> &SchemaLayout

Get or create a SchemaLayout for a full-table query. The layout is cached and reused for subsequent queries on the same table.

pub fn create_projection( schema: &Table, column_names: &[String], ) -> SchemaLayout

Create a SchemaLayout for a projection query. Projection layouts are not cached since column combinations vary too much.

pub fn invalidate(&mut self, table_name: &str)

Invalidate cache for a specific table (call when schema changes)

pub fn clear(&mut self)

Clear all cached layouts

Trait Implementations

impl Default for SchemaLayoutCache

fn default() -> SchemaLayoutCache

Returns the “default value” for a type.