Enum CdcOperation 

pub enum CdcOperation {
    Insert,
    Delete,
    UpdateBefore,
    UpdateAfter,
}

CDC operation type for changelog records.

These map to Z-set weights:

• Insert: +1 weight
• Delete: -1 weight
• UpdateBefore: -1 weight (first half of update)
• UpdateAfter: +1 weight (second half of update)

Variants

Insert

Insert a new record (+1 weight)

Delete

Delete an existing record (-1 weight)

UpdateBefore

Retraction of previous value before update (-1 weight)

UpdateAfter

New value after update (+1 weight)

Implementations

impl CdcOperation

pub fn weight(&self) -> i32

Returns the Z-set weight for this operation.

• Insert/UpdateAfter: +1
• Delete/UpdateBefore: -1

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.

pub fn debezium_op(&self) -> char

Returns the Debezium-compatible operation code.

• ‘c’: create (insert)
• ‘d’: delete
• ‘u’: update (used for both before/after in Debezium)

pub fn to_u8(self) -> u8

Converts the operation to a u8 for compact storage.

Used by ChangelogRef to store operation type in a single byte.

pub fn from_u8(value: u8) -> Self

Converts from u8 (defaults to Insert for unknown values).

Trait Implementations

impl Archive for CdcOperation

type Archived = ArchivedCdcOperation

The archived representation of this type.

type Resolver = CdcOperationResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

fn resolve( &self, resolver: <Self as Archive>::Resolver, out: Place<<Self as Archive>::Archived>, )

Creates the archived version of this value at the given position and writes it to the given output.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize.

impl Clone for CdcOperation

fn clone(&self) -> CdcOperation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CdcOperation

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

Formats the value using the given formatter.

impl<__D: Fallible + ?Sized> Deserialize<CdcOperation, __D> for Archived<CdcOperation>

fn deserialize( &self, deserializer: &mut __D, ) -> Result<CdcOperation, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl From<CdcOperation> for EventType

fn from(op: CdcOperation) -> Self

Converts a CdcOperation into an EventType.

• Insert / UpdateAfter → Insert
• Delete / UpdateBefore → Delete

impl PartialEq for CdcOperation

fn eq(&self, other: &CdcOperation) -> 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<__S: Fallible + ?Sized> Serialize<__S> for CdcOperation

fn serialize( &self, serializer: &mut __S, ) -> Result<<Self as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl Copy for CdcOperation

impl Eq for CdcOperation

impl StructuralPartialEq for CdcOperation