fn from(empty_relation: PyEmptyRelation) -> Self {

empty_relation.empty

}

fn from(empty: EmptyRelation) -> PyEmptyRelation {

PyEmptyRelation { empty }

}

fn fmt(&self, f: &mut Formatter) -> fmt::Result {

write!(

f,

"Empty Relation

&self.empty.produce_one_row, &self.empty.schema

)

}

fn produce_one_row(&self) -> PyResult<bool> {

Ok(self.empty.produce_one_row)

}

/// Resulting Schema for this `EmptyRelation` node instance

fn schema(&self) -> PyResult<PyDFSchema> {

Ok((*self.empty.schema).clone().into())

}

/// Get a String representation of this column

fn __repr__(&self) -> String {

format!("{}", self)

}

fn __name__(&self) -> PyResult<String> {

Ok("EmptyRelation".to_string())

}

fn inputs(&self) -> Vec<PyLogicalPlan> {

// table scans are leaf nodes and do not have inputs

vec![]

}

fn to_variant(&self, py: Python) -> PyResult<PyObject> {

Ok(self.clone().into_py(py))

}