Struct ColumnarStore

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pub struct ColumnarStore { /* private fields */ }

Expand description

In-memory columnar store backed by Arrow RecordBatch.

Accumulates rows and converts them to columnar format on demand.

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impl ColumnarStore

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

Create a new ColumnarStore with the given schema.

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pub fn append_row(&mut self, values: &[ScalarValue]) -> DbxResult<()>

Append a row of values. Must match the schema’s field count and types.

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pub fn to_record_batch(&self) -> DbxResult<RecordBatch>

Convert accumulated rows into an Arrow RecordBatch (Parallelized).

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pub fn schema(&self) -> &Schema

Get the schema.

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pub fn row_count(&self) -> usize

Get the number of accumulated rows.

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pub fn clear(&mut self)

Clear all accumulated rows.

Auto Trait Implementations§

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impl UnwindSafe for ColumnarStore

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