Enum PendingState 

#[non_exhaustive]
pub enum PendingState {
    Ready,
    NotReady,
    Error,
    NoTasksAvailable,
    Unknown(duckdb_pending_state),
}

Incremental execution of a prepared statement, one task at a time. The state of a pending execution, as reported by DuckDB.

Mirrors duckdb_pending_state. #[non_exhaustive] and carries Unknown so a value a future DuckDB adds is preserved rather than lost.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Ready

The result is ready; call execute.

NotReady

More tasks remain; call execute_task again.

Error

Execution failed; error has the message.

NoTasksAvailable

No tasks are currently available (e.g. waiting on another thread).

Unknown(duckdb_pending_state)

A state this build does not recognise; the raw value is preserved.

Implementations

impl PendingState

pub fn is_finished(self) -> bool

Returns true if this state means execution has finished (result ready).

Uses DuckDB’s own duckdb_pending_execution_is_finished rather than comparing to Ready directly, so the definition stays in sync with DuckDB.

Trait Implementations

impl Clone for PendingState

fn clone(&self) -> PendingState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for PendingState

impl Debug for PendingState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for PendingState

impl Hash for PendingState

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for PendingState

fn eq(&self, other: &PendingState) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for PendingState