Struct PushdownContext 

pub struct PushdownContext<'a> {
    pub schema: &'a Schema,
    pub exec_ctx: Option<&'a ExecutionContext>,
}

Context for pushdown operations

Fields

schema: &'a Schema

Schema for type coercion and column index lookup

exec_ctx: Option<&'a ExecutionContext>

Execution context for parameter resolution

Implementations

impl<'a> PushdownContext<'a>

pub fn new(schema: &'a Schema, exec_ctx: Option<&'a ExecutionContext>) -> Self

pub fn column_type(&self, name: &str) -> Option<DataType>

Get column data type by name

pub fn has_column(&self, name: &str) -> bool

Check if a column exists in the schema

pub fn coerce_to_column_type(&self, column: &str, value: Value) -> Option<Value>

Coerce value to column type if known