Enum StreamShapes 

pub enum StreamShapes {
    BatchLocal,
    CrossBatch,
}

How the streaming route’s batches may reference shapes (#5407). Read only by POST /api/v1/parse/parquet-stream, and only meaningful on the shared-shapes layout.

OPT-IN for the same reason ParquetLayout is, one level down. A client that sends parquet_layout=shared-shapes today decodes every batch on its own, against that batch’s own vertex table; a mesh row pointing into an EARLIER batch’s vertices would read as out of range at best, or as a different shape’s vertices at worst. So the stream shares across batches only for a client that says it keeps earlier batches’ shapes, and every batch it sends that way states its vertex_base / index_base in the event, which is how the client knows the server honoured the request.

Not part of the cache identity: a cross-batch stream fills the SAME v7 entry a batch-local one does, because both are valid whole-model v7 blobs (whole-stream offsets, one row group per batch). What differs is how a cached replay may split one back into batches; see split_into_batches.

Variants

BatchLocal

Every batch is self-contained: its mesh rows index its own vertex and index tables. The only behaviour before #5407.

CrossBatch

A batch carries only the shapes no earlier batch emitted, and its mesh rows index the whole stream’s vertex/index tables.

Trait Implementations

impl Clone for StreamShapes

fn clone(&self) -> StreamShapes

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamShapes

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

Formats the value using the given formatter.

impl Default for StreamShapes

fn default() -> StreamShapes

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for StreamShapes

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for StreamShapes

fn eq(&self, other: &StreamShapes) -> 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 Copy for StreamShapes

impl Eq for StreamShapes

impl StructuralPartialEq for StreamShapes