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InMemoryTable

scirs2_io::table_provider

Struct InMemoryTable 

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pub struct InMemoryTable { /* private fields */ }
Expand description

A simple TableProvider backed by an in-memory list of RecordBatches.

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impl InMemoryTable

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pub fn new(schema: Schema, batches: Vec<RecordBatch>) -> Self

Create a new in-memory table with the given schema and batches.

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pub fn total_rows(&self) -> usize

Return the total number of rows across all batches.

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impl TableProvider for InMemoryTable

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fn schema(&self) -> &Schema

Return the table’s schema.
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fn scan( &self, projection: Option<&[usize]>, limit: Option<usize>, ) -> Result<Box<dyn Iterator<Item = Result<RecordBatch, IoError>>>, IoError>

Produce an iterator of RecordBatches. Read more
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fn n_rows_estimate(&self) -> Option<usize>

Optional row-count estimate for query planning.

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