Enum DynFilterPayload 

#[non_exhaustive]
pub enum DynFilterPayload {
    Datafusion(Vec<u8>),
}

Serialized predicate payload for remote dynamic filter updates.

The payload is tagged in JSON so receivers can reject unsupported encodings before decoding engine-specific bytes. For DataFusion expressions the payload bytes are serialized by serde_json as a base64 string, for example:

{ "kind": "datafusion", "payload": "CQgH" }

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.

Datafusion(Vec<u8>)

A serialized DataFusion [PhysicalExpr] encoded as a protobuf [PhysicalExprNode].

Implementations

impl DynFilterPayload

pub fn from_datafusion_expr( expr: &Arc<dyn PhysicalExpr>, max_payload_bytes: usize, ) -> DataFusionResult<Self>

Encodes a DataFusion physical expression into a bounded dynamic filter payload.

This rejects expressions that cannot be safely shipped as dynamic filter predicates and fails if the serialized payload exceeds max_payload_bytes.

pub fn decode_datafusion_expr( &self, task_ctx: &TaskContext, input_schema: &Schema, max_payload_bytes: usize, ) -> DataFusionResult<Arc<dyn PhysicalExpr>>

Decodes a DataFusion dynamic filter payload against the provided input schema.

The decoded expression is validated to ensure column indexes stay within the receiver-side schema, column names are consistent (defensive check), and the payload stays within max_payload_bytes.

Trait Implementations

impl Clone for DynFilterPayload

fn clone(&self) -> DynFilterPayload

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DynFilterPayload

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for DynFilterPayload

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for DynFilterPayload

fn eq(&self, other: &DynFilterPayload) -> 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 Serialize for DynFilterPayload

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for DynFilterPayload

impl StructuralPartialEq for DynFilterPayload