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[NO JIRA] [Rust] Fix rustdoc formatting issues with Rust 1.80.0 (#3050)
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* [NO JIRA] [Rust] Fix rustdoc formatting issues with Rust 1.80.0

Signed-off-by: Martin Tzvetanov Grigorov <mgrigorov@apache.org>

* Fix "error: `-` has lower precedence than method calls, which might be unexpected"

that fails on today's nightly compiler

Signed-off-by: Martin Tzvetanov Grigorov <mgrigorov@apache.org>

---------

Signed-off-by: Martin Tzvetanov Grigorov <mgrigorov@apache.org>
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martin-g authored Jul 26, 2024
1 parent a335c74 commit 42c54e6
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Showing 2 changed files with 30 additions and 32 deletions.
31 changes: 15 additions & 16 deletions lang/rust/avro/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -49,8 +49,7 @@ All data in Avro is schematized, as in the following example:
There are basically two ways of handling Avro data in Rust:

* **as Avro-specialized data types** based on an Avro schema;
* **as generic Rust serde-compatible types** implementing/deriving `Serialize` and
`Deserialize`;
* **as generic Rust serde-compatible types** implementing/deriving `Serialize` and `Deserialize`;

**apache-avro** provides a way to read and write both these data representations easily and
efficiently.
Expand Down Expand Up @@ -264,15 +263,15 @@ Avro supports three different compression codecs when encoding data:

* **Null**: leaves data uncompressed;
* **Deflate**: writes the data block using the deflate algorithm as specified in RFC 1951, and
typically implemented using the zlib library. Note that this format (unlike the "zlib format" in
RFC 1950) does not have a checksum.
typically implemented using the zlib library. Note that this format (unlike the "zlib format" in
RFC 1950) does not have a checksum.
* **Snappy**: uses Google's [Snappy](http://google.github.io/snappy/) compression library. Each
compressed block is followed by the 4-byte, big-endianCRC32 checksum of the uncompressed data in
the block. You must enable the `snappy` feature to use this codec.
compressed block is followed by the 4-byte, big-endianCRC32 checksum of the uncompressed data in
the block. You must enable the `snappy` feature to use this codec.
* **Zstandard**: uses Facebook's [Zstandard](https://facebook.github.io/zstd/) compression library.
You must enable the `zstandard` feature to use this codec.
You must enable the `zstandard` feature to use this codec.
* **Bzip2**: uses [BZip2](https://sourceware.org/bzip2/) compression library.
You must enable the `bzip` feature to use this codec.
You must enable the `bzip` feature to use this codec.
* **Xz**: uses [xz2](https://github.com/alexcrichton/xz2-rs) compression library.
You must enable the `xz` feature to use this codec.

Expand Down Expand Up @@ -531,7 +530,7 @@ fn main() -> Result<(), Error> {

let mut record = Record::new(writer.schema()).unwrap();
record.put("decimal_fixed", Decimal::from(9936.to_bigint().unwrap().to_signed_bytes_be()));
record.put("decimal_var", Decimal::from((-32442.to_bigint().unwrap()).to_signed_bytes_be()));
record.put("decimal_var", Decimal::from(((-32442).to_bigint().unwrap()).to_signed_bytes_be()));
record.put("uuid", uuid::Uuid::parse_str("550e8400-e29b-41d4-a716-446655440000").unwrap());
record.put("date", Value::Date(1));
record.put("time_millis", Value::TimeMillis(2));
Expand Down Expand Up @@ -690,14 +689,14 @@ registered and used!

The library provides two implementations of schema equality comparators:
1. `SpecificationEq` - a comparator that serializes the schemas to their
canonical forms (i.e. JSON) and compares them as strings. It is the only implementation
until apache_avro 0.16.0.
See the [Avro specification](https://avro.apache.org/docs/1.11.1/specification/#parsing-canonical-form-for-schemas)
for more information!
canonical forms (i.e. JSON) and compares them as strings. It is the only implementation
until apache_avro 0.16.0.
See the [Avro specification](https://avro.apache.org/docs/1.11.1/specification/#parsing-canonical-form-for-schemas)
for more information!
2. `StructFieldEq` - a comparator that compares the schemas structurally.
It is faster than the `SpecificationEq` because it returns `false` as soon as a difference
is found and is recommended for use!
It is the default comparator since apache_avro 0.17.0.
It is faster than the `SpecificationEq` because it returns `false` as soon as a difference
is found and is recommended for use!
It is the default comparator since apache_avro 0.17.0.

To use a custom comparator, you need to implement the `SchemataEq` trait and set it using the
`set_schemata_equality_comparator` function:
Expand Down
31 changes: 15 additions & 16 deletions lang/rust/avro/src/lib.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -38,8 +38,7 @@
//! There are basically two ways of handling Avro data in Rust:
//!
//! * **as Avro-specialized data types** based on an Avro schema;
//! * **as generic Rust serde-compatible types** implementing/deriving `Serialize` and
//! `Deserialize`;
//! * **as generic Rust serde-compatible types** implementing/deriving `Serialize` and `Deserialize`;
//!
//! **apache-avro** provides a way to read and write both these data representations easily and
//! efficiently.
Expand Down Expand Up @@ -279,15 +278,15 @@
//!
//! * **Null**: leaves data uncompressed;
//! * **Deflate**: writes the data block using the deflate algorithm as specified in RFC 1951, and
//! typically implemented using the zlib library. Note that this format (unlike the "zlib format" in
//! RFC 1950) does not have a checksum.
//! typically implemented using the zlib library. Note that this format (unlike the "zlib format" in
//! RFC 1950) does not have a checksum.
//! * **Snappy**: uses Google's [Snappy](http://google.github.io/snappy/) compression library. Each
//! compressed block is followed by the 4-byte, big-endianCRC32 checksum of the uncompressed data in
//! the block. You must enable the `snappy` feature to use this codec.
//! compressed block is followed by the 4-byte, big-endianCRC32 checksum of the uncompressed data in
//! the block. You must enable the `snappy` feature to use this codec.
//! * **Zstandard**: uses Facebook's [Zstandard](https://facebook.github.io/zstd/) compression library.
//! You must enable the `zstandard` feature to use this codec.
//! You must enable the `zstandard` feature to use this codec.
//! * **Bzip2**: uses [BZip2](https://sourceware.org/bzip2/) compression library.
//! You must enable the `bzip` feature to use this codec.
//! You must enable the `bzip` feature to use this codec.
//! * **Xz**: uses [xz2](https://github.com/alexcrichton/xz2-rs) compression library.
//! You must enable the `xz` feature to use this codec.
//!
Expand Down Expand Up @@ -644,7 +643,7 @@
//!
//! let mut record = Record::new(writer.schema()).unwrap();
//! record.put("decimal_fixed", Decimal::from(9936.to_bigint().unwrap().to_signed_bytes_be()));
//! record.put("decimal_var", Decimal::from((-32442.to_bigint().unwrap()).to_signed_bytes_be()));
//! record.put("decimal_var", Decimal::from(((-32442).to_bigint().unwrap()).to_signed_bytes_be()));
//! record.put("uuid", uuid::Uuid::parse_str("550e8400-e29b-41d4-a716-446655440000").unwrap());
//! record.put("date", Value::Date(1));
//! record.put("time_millis", Value::TimeMillis(2));
Expand Down Expand Up @@ -803,14 +802,14 @@
//!
//! The library provides two implementations of schema equality comparators:
//! 1. `SpecificationEq` - a comparator that serializes the schemas to their
//! canonical forms (i.e. JSON) and compares them as strings. It is the only implementation
//! until apache_avro 0.16.0.
//! See the [Avro specification](https://avro.apache.org/docs/1.11.1/specification/#parsing-canonical-form-for-schemas)
//! for more information!
//! canonical forms (i.e. JSON) and compares them as strings. It is the only implementation
//! until apache_avro 0.16.0.
//! See the [Avro specification](https://avro.apache.org/docs/1.11.1/specification/#parsing-canonical-form-for-schemas)
//! for more information!
//! 2. `StructFieldEq` - a comparator that compares the schemas structurally.
//! It is faster than the `SpecificationEq` because it returns `false` as soon as a difference
//! is found and is recommended for use!
//! It is the default comparator since apache_avro 0.17.0.
//! It is faster than the `SpecificationEq` because it returns `false` as soon as a difference
//! is found and is recommended for use!
//! It is the default comparator since apache_avro 0.17.0.
//!
//! To use a custom comparator, you need to implement the `SchemataEq` trait and set it using the
//! `set_schemata_equality_comparator` function:
Expand Down

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