Struct EventBatchBuilder 

pub struct EventBatchBuilder { /* private fields */ }

Incremental builder for a columnar EventBatch.

Implementations

impl EventBatchBuilder

pub fn new(schema: Arc<Schema>) -> Self

Creates an empty builder.

pub fn with_capacity(schema: Arc<Schema>, capacity: usize) -> Self

Creates an empty builder with per-column capacity.

pub fn push<P, S>(&mut self, p4s: P, scalars: S) -> LadduDataResult<&mut Self>

where P: IntoIterator<Item = RealVec4>, S: IntoIterator<Item = f64>,

Appends an unweighted event from ordered values.

Errors

Returns LadduDataError when value counts do not match the schema or the builder already contains weighted events.

pub fn push_weighted<P, S>( &mut self, p4s: P, scalars: S, weight: f64, ) -> LadduDataResult<&mut Self>

where P: IntoIterator<Item = RealVec4>, S: IntoIterator<Item = f64>,

Appends a weighted event from ordered values.

Errors

Returns LadduDataError when value counts do not match the schema or the builder already contains unweighted events.

pub fn push_event(&mut self, event: OwnedEvent) -> LadduDataResult<&mut Self>

Validates and appends one owned event.

Errors

Returns LadduDataError when the event shape does not match the schema or its weight presence differs from prior events.

pub fn extend<I>(&mut self, events: I) -> LadduDataResult<&mut Self>

where I: IntoIterator<Item = OwnedEvent>,

Appends all owned events from an iterator.

Errors

Returns the first LadduDataError produced by an event whose shape or weight presence is incompatible with the builder.

pub fn finish(self) -> LadduDataResult<EventBatch>

Finalizes the builder into an immutable batch.

Errors

Returns LadduDataError if the accumulated columns or weights have inconsistent lengths.