Struct MorselPlan 

pub struct MorselPlan { /* private fields */ }

Return result of MorselPlanner::plan.

Logical Ordering

For plans where the output order of rows is maintained, the output order of a MorselPlanner is logically defined as follows:

1. All morsels that are directly produced
2. Recursively, all morsels produced by the returned planners

Implementations

impl MorselPlan

pub fn new() -> Self

Create an empty morsel plan.

pub fn with_morsels(self, morsels: Vec<Box<dyn Morsel>>) -> Self

Set the ready morsels.

pub fn with_planners(self, planners: Vec<Box<dyn MorselPlanner>>) -> Self

Set the ready child planners.

pub fn with_pending_planner<F>(self, io_future: F) -> Self

where F: Future<Output = Result<Box<dyn MorselPlanner>>> + Send + 'static,

Set the pending planner for an I/O phase.

pub fn set_pending_planner<F>(&mut self, io_future: F)

where F: Future<Output = Result<Box<dyn MorselPlanner>>> + Send + 'static,

Set the pending planner for an I/O phase.

pub fn take_morsels(&mut self) -> Vec<Box<dyn Morsel>>

Take the ready morsels.

pub fn take_ready_planners(&mut self) -> Vec<Box<dyn MorselPlanner>>

Take the ready child planners.

pub fn take_pending_planner(&mut self) -> Option<PendingMorselPlanner>

Take the pending I/O future, if any.

pub fn has_io_future(&self) -> bool

Returns true if this plan contains an I/O future.

Trait Implementations

impl Default for MorselPlan

fn default() -> MorselPlan

Returns the “default value” for a type.