iceberg::arrow::record_batch_projector

Struct RecordBatchProjector

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

Help to project specific field from `RecordBatch`` according to the fields id.

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impl RecordBatchProjector

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pub fn from_iceberg_schema( iceberg_schema: Arc<IcebergSchema>, target_field_ids: &[i32], ) -> Result<Self>

Create RecordBatchProjector using Iceberg schema.

This constructor converts the Iceberg schema to Arrow schema with field ID metadata, then uses the standard field ID lookup for projection.

§Arguments
  • iceberg_schema - The Iceberg schema for field ID mapping
  • target_field_ids - The field IDs to project
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pub fn project_column(&self, batch: &[ArrayRef]) -> Result<Vec<ArrayRef>>

Do projection with columns

Trait Implementations§

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impl Clone for RecordBatchProjector

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fn clone(&self) -> RecordBatchProjector

Returns a copy 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 RecordBatchProjector

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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 PartialEq for RecordBatchProjector

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fn eq(&self, other: &RecordBatchProjector) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for RecordBatchProjector

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impl StructuralPartialEq for RecordBatchProjector

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