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ParquetDecoderConfig

laminar_connectors::schema::parquet

Struct ParquetDecoderConfig 

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pub struct ParquetDecoderConfig {
    pub projection_indices: Vec<usize>,
    pub row_group_indices: Vec<usize>,
    pub batch_size: usize,
    pub predicate: Option<RowGroupPredicate>,
}
Expand description

Configuration for the Parquet decoder.

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§projection_indices: Vec<usize>

Column indices to project (empty = all columns).

§row_group_indices: Vec<usize>

Row-group indices to read (empty = all row groups).

§batch_size: usize

Maximum rows per RecordBatch.

§predicate: Option<RowGroupPredicate>

Optional row-group predicate for statistics-based filtering.

Implementations§

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impl ParquetDecoderConfig

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pub fn with_projection(self, indices: Vec<usize>) -> Self

Sets the projection column indices.

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pub fn with_row_groups(self, indices: Vec<usize>) -> Self

Sets the row-group indices to read.

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pub fn with_batch_size(self, size: usize) -> Self

Sets the batch size.

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pub fn with_predicate(self, predicate: RowGroupPredicate) -> Self

Sets a row-group predicate.

Trait Implementations§

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impl Clone for ParquetDecoderConfig

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fn clone(&self) -> ParquetDecoderConfig

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ParquetDecoderConfig

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

Formats the value using the given formatter. Read more
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impl Default for ParquetDecoderConfig

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fn default() -> Self

Returns the “default value” for a type. Read more

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