Enum FoldJoin 

pub enum FoldJoin {
    BestBy(String),
    Last,
    All,
}

How a FoldNode folds its passes into the single value it produces.

Adjacently tagged ({"kind": "...", "value": ...} for the variant that carries data, {"kind": "..."} for the unit variants) so a future join rule is a new variant that does not change how an existing document encodes, exactly like BranchCondition.

The variants are grounded in what the AARG loop actually needs. best_by is the argmax winner the loop’s “best draft wins, never the last pass” rule requires; last and all are the two obvious simpler folds a different consumer might want.

Variants

BestBy(String)

Produce the pass whose value MAXIMIZES the given reference (a path into the accumulated value, score or review.overall_score). This is the argmax the AARG loop needs: the best draft wins, never the last. The reference is parsed at submit like a crate::expr path, so a malformed one is a node-precise error.

Last

Produce the value of the last pass the loop ran.

All

Produce every pass’s value as a list, in pass order.

Trait Implementations

impl Clone for FoldJoin

fn clone(&self) -> FoldJoin

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FoldJoin

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FoldJoin

fn deserialize<__D>( __deserializer: __D, ) -> Result<FoldJoin, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for FoldJoin

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 FoldJoin

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FoldJoin

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FoldJoin