Method get_or_load

src/cache/schema.rs:249–278

Get table schema with automatic preloading on first access

(&self, conn: &Connection, table_name: &str)

    /// Get table schema with automatic preloading on first access
    pub fn get_or_load(&self, conn: &Connection, table_name: &str) -> Result<TableSchema, rusqlite::Error> {
        // Try cache first
        if let Some(schema) = self.get(table_name) {
            return Ok(schema);
        }

        // If all tables haven't been loaded yet, do bulk preload
        if !*self.all_tables_loaded.read().unwrap() {
            self.preload_all_schemas(conn)?;
            
            // Try cache again after preload
            if let Some(schema) = self.get(table_name) {
                return Ok(schema);
            }
        }

        // If still not found, load this specific table
        let schema = self.load_table_schema_direct(conn, table_name)?;
        self.insert(table_name.to_string(), schema.clone());
        
        // Check for decimal columns and update bloom filter
        let has_decimal = schema.columns.iter().any(|col| {
            col.pg_type == "numeric" || col.pg_oid == PgType::Numeric.to_oid()
        });
        if has_decimal {
            self.decimal_tables.write().unwrap().insert(table_name.to_string());
        }
        
        Ok(schema)
    }
    
    /// Ensure schema is loaded for tables referenced in a query
    pub fn ensure_schema_loaded(&self, conn: &Connection, query: &str) {