Struct MaterializedOperator 

pub struct MaterializedOperator { /* private fields */ }

An operator that yields rows from a pre-materialized vector.

This is useful for:

• Converting existing Vec<Row> results to the operator model
• CTEs that have been pre-computed
• Subquery results

Implementations

impl MaterializedOperator

pub fn new(rows: Vec<Row>, schema: Vec<ColumnInfo>) -> Self

Create an operator from a vector of rows.

pub fn with_ordering(self, ordering: OrderingProperty) -> Self

Attach ordering already proven by the producing physical operator.

This method does not inspect rows. Callers must propagate a genuine physical certificate rather than infer one from current contents.

pub fn from_arc(arc_rows: CompactArc<Vec<Row>>, schema: Vec<ColumnInfo>) -> Self

Create from a CompactArc<Vec<Row>>, unwrapping if sole owner or cloning if shared. This is optimal for CTE results which may have multiple references.

Trait Implementations

impl Operator for MaterializedOperator

fn open(&mut self) -> Result<()>

Initialize the operator.

fn next(&mut self) -> Result<Option<RowRef>>

Get the next row from this operator.

fn close(&mut self) -> Result<()>

Close the operator and release resources.

fn schema(&self) -> &[ColumnInfo]

Get the schema (column information) for this operator’s output.

fn estimated_rows(&self) -> Option<usize>

Get an estimate of the number of rows this operator will produce.

fn ordering(&self) -> OrderingProperty

Physical ordering guaranteed by this operator’s output.

fn name(&self) -> &str

Get a descriptive name for this operator (for EXPLAIN).