alamb commented on code in PR #21849:
URL: https://github.com/apache/datafusion/pull/21849#discussion_r3148813617
##########
datafusion/functions/src/string/replace.rs:
##########
@@ -160,25 +162,29 @@ fn replace_view(args: &[ArrayRef]) -> Result<ArrayRef> {
let from_array = as_string_view_array(&args[1])?;
let to_array = as_string_view_array(&args[2])?;
- let mut builder = GenericStringBuilder::<i32>::new();
+ let len = string_array.len();
+ let mut builder = GenericStringArrayBuilder::<i32>::with_capacity(len, 0);
let mut buffer = String::new();
+ let nulls = NullBuffer::union(
+ NullBuffer::union(string_array.nulls(), from_array.nulls()).as_ref(),
+ to_array.nulls(),
+ );
Review Comment:
A good use for the new `NullBuffer::union_many` eventually:
- https://github.com/apache/arrow-rs/pull/9692
##########
datafusion/functions/src/string/replace.rs:
##########
@@ -160,25 +162,29 @@ fn replace_view(args: &[ArrayRef]) -> Result<ArrayRef> {
let from_array = as_string_view_array(&args[1])?;
let to_array = as_string_view_array(&args[2])?;
- let mut builder = GenericStringBuilder::<i32>::new();
+ let len = string_array.len();
+ let mut builder = GenericStringArrayBuilder::<i32>::with_capacity(len, 0);
let mut buffer = String::new();
+ let nulls = NullBuffer::union(
+ NullBuffer::union(string_array.nulls(), from_array.nulls()).as_ref(),
+ to_array.nulls(),
+ );
Review Comment:
Filed a ticket to track that improvement:
- https://github.com/apache/datafusion/issues/21880
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