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Fix StructArray::filter length calculation #769

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merged 4 commits into from
Sep 10, 2024
Merged

Fix StructArray::filter length calculation #769

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AdamGS Sep 10, 2024
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AdamGS Sep 10, 2024
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AdamGS Sep 10, 2024
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AdamGS Sep 10, 2024
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7 changes: 5 additions & 2 deletions vortex-array/src/array/struct_/compute.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use itertools::Itertools;
use vortex_error::VortexResult;
use vortex_error::{vortex_err, VortexResult};
use vortex_scalar::Scalar;

use crate::array::struct_::StructArray;
Expand Down Expand Up @@ -82,7 +82,10 @@ impl FilterFn for StructArray {
.children()
.map(|field| filter(&field, predicate))
.try_collect()?;
let length = fields.first().map(|a| a.len()).unwrap_or_default();
let length = fields
.first()
.map(|a| a.len())
.ok_or(vortex_err!("Struct arrays should have at least one field"))?;
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Self::try_new(
self.names().clone(),
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