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BatchAdapter

datafusion_physical_expr_adapter::schema_rewriter

Struct BatchAdapter 

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

Adapter for transforming record batches to match a target schema.

Create instances via BatchAdapterFactory.

§Performance

The adapter pre-computes the projection expressions during creation, so the adapt_batch call is efficient and suitable for use in hot paths like streaming file scans.

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impl BatchAdapter

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pub fn adapt_batch(&self, batch: &RecordBatch) -> Result<RecordBatch>

Adapt the given record batch to match the target schema.

The input batch must conform to the source schema used when creating this adapter.

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impl Debug for BatchAdapter

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

Formats the value using the given formatter. Read more

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