anoopj commented on code in PR #2985:
URL: https://github.com/apache/iceberg-rust/pull/2985#discussion_r3763828426
##########
crates/iceberg/src/arrow/record_batch_transformer.rs:
##########
@@ -870,11 +930,53 @@ impl RecordBatchTransformer {
fields,
child_values,
} => Self::create_struct_column(fields, child_values,
num_rows)?,
+
+ ColumnSource::Coalesce {
+ source_index,
+ fallback,
+ target_type,
+ } => Self::create_coalesce_column(
+ &columns[*source_index],
+ fallback,
+ target_type,
+ )?,
})
})
.collect()
}
+ /// Builds a coalesced column: the source column's per-row value where
non-null,
+ /// else the scalar `fallback`, cast to `target_type` (the run-end-encoded
type
+ /// the column's other paths produce).
+ fn create_coalesce_column(
+ source: &ArrayRef,
+ fallback: &PrimitiveLiteral,
+ target_type: &DataType,
+ ) -> Result<ArrayRef> {
+ if source.data_type() != &DataType::Int64 {
Review Comment:
Done
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