// axion-db/src/types/mod.rs
usecrate::metadata::AxionDataType;pubmodpostgres;/// A trait for mapping database-specific type names to Axion's normalized data types.
pubtraitTypeMapper: Send + Sync {/// Maps a SQL type name and an optional UDT name to an `AxionDataType`.
fnsql_to_axion(&self, sql_type:&str, udt_name:Option<&str>)-> AxionDataType;}