Trait EngineDataFrame 

pub trait EngineDataFrame {
    // Required methods
    fn filter_expr_ir(
        &self,
        condition: &ExprIr,
    ) -> Result<DataFrame, EngineError>;
    fn select_expr_ir(&self, exprs: &[ExprIr]) -> Result<DataFrame, EngineError>;
    fn with_column_expr_ir(
        &self,
        name: &str,
        expr: &ExprIr,
    ) -> Result<DataFrame, EngineError>;
    fn collect_rows(&self) -> Result<CollectedRows, EngineError>;
}

Engine-generic DataFrame operations expressed in terms of ExprIr and EngineError. Implemented for the root DataFrame using the DataFrameBackend trait so callers can depend on this trait instead of the concrete Polars-backed type.

Required Methods

fn filter_expr_ir(&self, condition: &ExprIr) -> Result<DataFrame, EngineError>

fn select_expr_ir(&self, exprs: &[ExprIr]) -> Result<DataFrame, EngineError>

fn with_column_expr_ir( &self, name: &str, expr: &ExprIr, ) -> Result<DataFrame, EngineError>

fn collect_rows(&self) -> Result<CollectedRows, EngineError>

Implementors

impl EngineDataFrame for DataFrame