Method into_plan

src/expr/src/linear.rs:643–645

Convert the `MapFilterProject` into a staged evaluation plan. The main behavior is extract temporal predicates, which cannot be evaluated using the standard machinery.

(self)

    /// The main behavior is extract temporal predicates, which cannot be evaluated
    /// using the standard machinery.
    pub fn into_plan(self) -> Result<plan::MfpPlan<E>, String> {
        plan::MfpPlan::create_from(self)
    }
}

impl<E: OptimizableExpr> MapFilterProject<E> {