Enum Materialization 

pub enum Materialization {
    Streaming,
    BoundedBarrier {
        working_set_size: u64,
    },
    UnboundedBarrier,
}

Streaming-vs-barrier classification per spec §6.2.

Variants

Streaming

O(operator-local state) per pull; no input materialized.

BoundedBarrier

Holds a finite working set; size declared at compile time. The two natural barriers per spec §6.3: zip(Cycle) shorter children + non-Lex order.

Fields

working_set_size: u64

Tuples the barrier holds at most.

UnboundedBarrier

Working set is unbounded. Always V6-rejected per spec §5; this variant exists for representational completeness but should never propagate through to a valid AST’s metadata.

Trait Implementations

impl Clone for Materialization

fn clone(&self) -> Materialization

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Materialization

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Materialization

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Materialization

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Materialization

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 Materialization