[jira] [Updated] (AVRO-3312) Rust: Use u32 instead of i32 for the Enum/Union's index field

["Martin Tzvetanov Grigorov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AVRO-3312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martin Tzvetanov Grigorov updated AVRO-3312:
--------------------------------------------
    Summary: Rust: Use u32 instead of i32 for the Enum/Union's index field  (was: Rust: Use u32 instead of i32 for the Enum/Union index field)

> Rust: Use u32 instead of i32 for the Enum/Union's index field
> -------------------------------------------------------------
>
>                 Key: AVRO-3312
>                 URL: https://issues.apache.org/jira/browse/AVRO-3312
>             Project: Apache Avro
>          Issue Type: Improvement
>          Components: rust
>            Reporter: Martin Tzvetanov Grigorov
>            Assignee: Martin Tzvetanov Grigorov
>            Priority: Major
>
> Currently Rust's Value::Enum and Value::Union use i32 (i.e. signed int) for their index [fields|https://github.com/apache/avro/blob/49c6e1067c937d066503be9c7f4032fb03f67474/lang/rust/src/types.rs#L61-L74]:
> {code}
>     /// An `enum` Avro value.
>     ///
>     /// An Enum is represented by a symbol and its position in the symbols list
>     /// of its corresponding schema.
>     /// This allows schema-less encoding, as well as schema resolution while
>     /// reading values.
>     Enum(i32, String),
>     /// An `union` Avro value.
>     ///
>     /// A Union is represented by the value it holds and its position in the type list
>     /// of its corresponding schema
>     /// This allows schema-less encoding, as well as schema resolution while
>     /// reading values.
>     Union(i32, Box<Value>),
> {code}
> Since they cannot be negative it would be better to change them to u32 (unsigned int).



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