pub struct ViewRollback { /* private fields */ }Expand description
The view as it stood before a query or view replaced it: a checkpoint. A query can
plan and still fail on its rows (a value that will not cast); then the table returns
to this, rows and all. Frames and buffers are shared, not copied. Taken by
DataTableState::rollback_point or DataTableState::try_transition, restored by
DataTableState::roll_back.
Implementations§
Source§impl ViewRollback
impl ViewRollback
Sourcepub fn count_landed(
&mut self,
len_generation: u64,
rows: usize,
file_row_groups: Option<&[Vec<usize>]>,
) -> bool
pub fn count_landed( &mut self, len_generation: u64, rows: usize, file_row_groups: Option<&[Vec<usize>]>, ) -> bool
A background count of frame len_generation came back while this checkpoint
was waiting. Kept when the frame is the one this restores, so the rows and the
count return together; returns whether it was.
Auto Trait Implementations§
impl !Freeze for ViewRollback
impl !RefUnwindSafe for ViewRollback
impl !UnwindSafe for ViewRollback
impl Send for ViewRollback
impl Sync for ViewRollback
impl Unpin for ViewRollback
impl UnsafeUnpin for ViewRollback
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