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https://issues.apache.org/jira/browse/ARROW-13025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Li reassigned ARROW-13025:
--------------------------------
Assignee: David Li
> [C++][Compute] Enhance FunctionOptions with equality, debug representability,
> and serializability
> -------------------------------------------------------------------------------------------------
>
> Key: ARROW-13025
> URL: https://issues.apache.org/jira/browse/ARROW-13025
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Ben Kietzman
> Assignee: David Li
> Priority: Major
> Fix For: 5.0.0
>
>
> Currently the {{FunctionOptions}} interface is entirely opaque. It would be
> useful to add
> - equality comparability {code}
> bool FunctionOptions::Equals(const FunctionOptions& other) const
> {code}
> - debug representation {code}
> std::string FunctionOptions::ToString() const
> {code}
> - serializability {code}
> Status FunctionOptions::Serialize(io::OutputStream*) const
> Result<std::unique_ptr<FunctionOptions>>
> FunctionOptions::Deserialize(io::InputStream*)
> {code} (or similar)
> These are already implemented for common instances of {{FunctionOptions}} in
> expression.cc, since {{Expression}} has the above capabilities and may
> contain a {{FunctionOptions}}. Making these explicit virtual functions will
> formalize this ad-hoc
> code and expose it for direct unit testing.
> As an added bonus, if options can serialize themselves to JSON then that can
> be used by Python and other bindings to generate wrappers instead of the
> current hand-written listing of wrapper classes for each {{FunctionOptions}}
> subclass
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