Trait lance_encoding_datafusion::substrait::FilterExpressionExt

pub trait FilterExpressionExt {
    // Required methods
    fn substrait_to_df(&self, schema: &Schema) -> Result<(Expr, DFSchema)>;
    fn df_to_substrait(expr: Expr, schema: &Schema) -> Result<Self>
       where Self: Sized;
}

Helper trait to bridge lance-encoding and substrait

Required Methods

fn substrait_to_df(&self, schema: &Schema) -> Result<(Expr, DFSchema)>

Convert a lance-encoding filter expression (which we assume is substrait encoded) into a datafusion expr

fn df_to_substrait(expr: Expr, schema: &Schema) -> Result<Self>

where Self: Sized,

Convert a datafusion filter expression into a lance-encoding filter expression (using substrait)

Implementations on Foreign Types

impl FilterExpressionExt for FilterExpression

fn substrait_to_df(&self, schema: &Schema) -> Result<(Expr, DFSchema)>

fn df_to_substrait(expr: Expr, schema: &Schema) -> Result<Self>

where Self: Sized,

Implementors