Enum WriteMode 

#[non_exhaustive]
pub enum WriteMode {
    Append,
    Upsert,
    Delete,
    Overwrite,
}

Write semantics for a sink. Serialized snake_case. Default Append.

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.

Append

Insert every record (today’s behaviour).

Upsert

Insert-or-update by key; optionally route delete-marked rows to deletes.

Delete

Delete by key for every record.

Overwrite

Replace the entire destination with this run’s records (truncate-load / full refresh). The old contents are swapped out atomically only after the run completes successfully, so a mid-run failure leaves them intact. No key is required — it is a whole-dataset operation, not a keyed one.

Implementations

impl WriteMode

pub fn as_str(&self) -> &'static str

Lowercase wire name, for error messages.

Trait Implementations

impl Clone for WriteMode

fn clone(&self) -> WriteMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WriteMode

impl Debug for WriteMode

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

Formats the value using the given formatter.

impl Default for WriteMode

fn default() -> WriteMode

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for WriteMode

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WriteMode

impl JsonSchema for WriteMode

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for WriteMode

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for WriteMode

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for WriteMode