psvri commented on code in PR #2468:
URL: https://github.com/apache/arrow-rs/pull/2468#discussion_r947167189
##########
arrow/src/array/builder/struct_builder.rs:
##########
@@ -223,40 +220,28 @@ impl StructBuilder {
let arr = f.finish();
child_data.push(arr.into_data());
}
-
+ let length = self.len();
let null_bit_buffer = self.null_buffer_builder.finish();
let builder = ArrayData::builder(DataType::Struct(self.fields.clone()))
- .len(self.len)
+ .len(length)
.child_data(child_data)
.null_bit_buffer(null_bit_buffer);
- self.len = 0;
-
let array_data = unsafe { builder.build_unchecked() };
StructArray::from(array_data)
}
/// Constructs and validates contents in the builder to ensure that
/// - fields and field_builders are of equal length
- /// - the number of items in individual field_builders are equal to
self.len
- /// - the number of items in individual field_builders are equal to
self.null_buffer_builder.len()
+ /// - the number of items in individual field_builders are equal to
self.len()
fn validate_content(&self) {
if self.fields.len() != self.field_builders.len() {
panic!("Number of fields is not equal to the number of
field_builders.");
}
- if !self.field_builders.iter().all(|x| x.len() == self.len) {
+ if !self.field_builders.iter().all(|x| x.len() == self.len()) {
Review Comment:
Thanks for the information, I wasn't aware of this.
I shall make this change tomorrow.
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