Wes McKinney created ARROW-8921:
-----------------------------------
Summary: [C++] Add "TypeResolver" class interface to replace
current OutputType::Resolver pattern
Key: ARROW-8921
URL: https://issues.apache.org/jira/browse/ARROW-8921
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Wes McKinney
Fix For: 1.0.0
Like the {{TypeMatcher}} for extensible input type checking, TypeResolver will
allow more flexibility with respect to the output type resolution rule.
Currently the resolver function is defined as
{code}
using Resolver =
std::function<Result<ValueDescr>(KernelContext*, const
std::vector<ValueDescr>&)>;
{code}
By changing to a {{TypeResolver}} interface with a virtual Resolve function, we
also can provide for better human-readability when printing kernel signatures
(by having {{TypeResolver::ToString}}) and permitting TypeResolvers to be
compared
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
