alamb commented on code in PR #5622:
URL: https://github.com/apache/arrow-rs/pull/5622#discussion_r1562485694
##########
arrow-json/src/writer/encoder.rs:
##########
@@ -443,3 +448,33 @@ impl<'a> Encoder for MapEncoder<'a> {
out.push(b'}');
}
}
+
+struct FixedSizeBinaryEncoder<'a> {
+ array: &'a FixedSizeBinaryArray,
+ explicit_nulls: bool,
+}
+
+impl<'a> FixedSizeBinaryEncoder<'a> {
+ fn new(array: &'a FixedSizeBinaryArray, options: &EncoderOptions) -> Self {
+ Self {
+ array,
+ explicit_nulls: options.explicit_nulls,
+ }
+ }
+}
+
+impl<'a> Encoder for FixedSizeBinaryEncoder<'a> {
+ fn encode(&mut self, idx: usize, out: &mut Vec<u8>) {
+ if self.array.is_valid(idx) {
Review Comment:
I double checked by making the following change locally and the tests all
still pass. Thus I agree the valid check is not needed
```diff
diff --git a/arrow-json/src/writer/encoder.rs
b/arrow-json/src/writer/encoder.rs
index 27fa5747288..470d2fadd06 100644
--- a/arrow-json/src/writer/encoder.rs
+++ b/arrow-json/src/writer/encoder.rs
@@ -101,7 +101,7 @@ fn make_encoder_impl<'a>(
DataType::FixedSizeBinary(_) => {
let array =
array.as_any().downcast_ref::<FixedSizeBinaryArray>().unwrap();
- (Box::new(FixedSizeBinaryEncoder::new(array, options)) as _,
array.nulls().cloned())
+ (Box::new(FixedSizeBinaryEncoder::new(array)) as _,
array.nulls().cloned())
}
DataType::Struct(fields) => {
@@ -451,14 +451,12 @@ impl<'a> Encoder for MapEncoder<'a> {
struct FixedSizeBinaryEncoder<'a> {
array: &'a FixedSizeBinaryArray,
- explicit_nulls: bool,
}
impl<'a> FixedSizeBinaryEncoder<'a> {
- fn new(array: &'a FixedSizeBinaryArray, options: &EncoderOptions) ->
Self {
+ fn new(array: &'a FixedSizeBinaryArray) -> Self {
Self {
array,
- explicit_nulls: options.explicit_nulls,
}
}
}
@@ -473,8 +471,6 @@ impl<'a> Encoder for FixedSizeBinaryEncoder<'a> {
write!(out, "{byte:02x}").unwrap();
}
out.push(b'"');
- } else if self.explicit_nulls {
- out.extend_from_slice(b"null");
}
}
}
```
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