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Deprecate old JSON reader (#3610) #3718
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Original file line number | Diff line number | Diff line change | ||||
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@@ -582,6 +582,7 @@ where | |||||
/// [`RawDecoder`]: crate::raw::RawDecoder | ||||||
/// [#3610]: https://github.com/apache/arrow-rs/issues/3610 | ||||||
#[derive(Debug)] | ||||||
#[deprecated(note = "Use RawDecoder instead")] | ||||||
pub struct Decoder { | ||||||
/// Explicit schema for the JSON file | ||||||
schema: SchemaRef, | ||||||
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@@ -638,6 +639,7 @@ impl DecoderOptions { | |||||
} | ||||||
} | ||||||
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#[allow(deprecated)] | ||||||
impl Decoder { | ||||||
/// Create a new JSON decoder from some value that implements an | ||||||
/// iterator over [`serde_json::Value`]s (aka implements the | ||||||
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@@ -1604,12 +1606,15 @@ fn flatten_json_string_values(values: &[Value]) -> Vec<Option<String>> { | |||||
/// [`RawReader`]: crate::raw::RawReader | ||||||
/// [#3610]: https://github.com/apache/arrow-rs/issues/3610 | ||||||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. ditto.
Suggested change
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#[derive(Debug)] | ||||||
#[deprecated(note = "Use RawReader instead")] | ||||||
#[allow(deprecated)] | ||||||
pub struct Reader<R: Read> { | ||||||
reader: BufReader<R>, | ||||||
/// JSON value decoder | ||||||
decoder: Decoder, | ||||||
} | ||||||
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#[allow(deprecated)] | ||||||
impl<R: Read> Reader<R> { | ||||||
/// Create a new JSON Reader from any value that implements the `Read` trait. | ||||||
/// | ||||||
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@@ -1656,6 +1661,7 @@ impl<R: Read> Reader<R> { | |||||
/// [#3610]: https://github.com/apache/arrow-rs/issues/3610 | ||||||
/// | ||||||
#[derive(Debug, Default)] | ||||||
#[deprecated(note = "Use RawReaderBuilder instead")] | ||||||
pub struct ReaderBuilder { | ||||||
/// Optional schema for the JSON file | ||||||
/// | ||||||
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@@ -1670,6 +1676,7 @@ pub struct ReaderBuilder { | |||||
options: DecoderOptions, | ||||||
} | ||||||
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#[allow(deprecated)] | ||||||
impl ReaderBuilder { | ||||||
/// Create a new builder for configuring JSON parsing options. | ||||||
/// | ||||||
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@@ -1750,6 +1757,7 @@ impl ReaderBuilder { | |||||
} | ||||||
} | ||||||
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#[allow(deprecated)] | ||||||
impl<R: Read> Iterator for Reader<R> { | ||||||
type Item = Result<RecordBatch, ArrowError>; | ||||||
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@@ -1759,6 +1767,7 @@ impl<R: Read> Iterator for Reader<R> { | |||||
} | ||||||
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#[cfg(test)] | ||||||
#[allow(deprecated)] | ||||||
mod tests { | ||||||
use super::*; | ||||||
use arrow_array::cast::{ | ||||||
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Original file line number | Diff line number | Diff line change |
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@@ -1121,7 +1121,7 @@ mod tests { | |
// Note: we are using the JSON Arrow reader for brevity | ||
let json_content = r#" | ||
{"stocks":{"long": "$AAA", "short": "$BBB"}} | ||
{"stocks":{"long": null, "long": "$CCC", "short": null}} | ||
{"stocks":{"long": "$CCC", "short": null}} | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. This wasn't actually valid JSON, it contained a duplicate key - the RawReader handles this differently (preserving the duplicate) than the old JSON reader which preserves only the last instance There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. This sounds like behavior change. Do we have document it at There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. The prior behaviour wasn't documented on |
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{"stocks":{"hedged": "$YYY", "long": null, "short": "$D"}} | ||
"#; | ||
let entries_struct_type = DataType::Struct(vec![ | ||
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@@ -1138,9 +1138,7 @@ mod tests { | |
false, | ||
); | ||
let schema = Arc::new(Schema::new(vec![stocks_field])); | ||
let builder = arrow::json::ReaderBuilder::new() | ||
.with_schema(schema) | ||
.with_batch_size(64); | ||
let builder = arrow::json::RawReaderBuilder::new(schema).with_batch_size(64); | ||
let mut reader = builder.build(std::io::Cursor::new(json_content)).unwrap(); | ||
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let batch = reader.next().unwrap().unwrap(); | ||
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Still need the comment? Actually it reads unclear and seems strange to put issue link there.
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These are link shorthand, they don't get rendered, but are used to attach links to the text above.