Module transform

Arrow-based transform implementations for Iceberg partition transforms

This module provides functionality to apply Iceberg partition transforms to Arrow arrays. It supports:

• Identity transforms that pass values through unchanged
• Time-based transforms (year, month, day, hour) for dates and timestamps
• Efficient handling of different Arrow array types
• Conversion between Arrow and Iceberg data types

The transforms maintain Arrow’s null value semantics and work with Arrow’s columnar memory model for optimal performance.

Functions

transform_arrow

Applies an Iceberg partition transform to an Arrow array