Struct ChangelogRef 

pub struct ChangelogRef {
    pub batch_offset: u32,
    pub row_index: u32,
    pub weight: i16,
    /* private fields */
}

Zero-allocation changelog reference for Ring 0 hot path.

Instead of allocating a full ChangelogRecord, this stores offsets into the event batch with the operation type.

Size: 12 bytes (u32 + u32 + i16 + u8 + padding)

Fields

batch_offset: u32

Offset into the current batch

row_index: u32

Row index within the batch

weight: i16

Z-set weight (+1 or -1)

Implementations

impl ChangelogRef

pub fn new( batch_offset: u32, row_index: u32, weight: i16, operation: CdcOperation, ) -> Self

Creates a new changelog reference.

pub fn insert(batch_offset: u32, row_index: u32) -> Self

Creates an insert reference.

pub fn delete(batch_offset: u32, row_index: u32) -> Self

Creates a delete reference.

pub fn update_before(batch_offset: u32, row_index: u32) -> Self

Creates an update-before reference (retraction).

pub fn update_after(batch_offset: u32, row_index: u32) -> Self

Creates an update-after reference.

pub fn operation(&self) -> CdcOperation

Returns the CDC operation type.

pub fn is_insert(&self) -> bool

Returns true if this is an insert-type operation.

pub fn is_delete(&self) -> bool

Returns true if this is a delete-type operation.

Trait Implementations

impl Clone for ChangelogRef

fn clone(&self) -> ChangelogRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChangelogRef

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

Formats the value using the given formatter.

impl PartialEq for ChangelogRef

fn eq(&self, other: &ChangelogRef) -> 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 Copy for ChangelogRef

impl Eq for ChangelogRef

impl StructuralPartialEq for ChangelogRef