Ian Cook created ARROW-13119:
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Summary: [R] Set empty schema in scalar Expressions
Key: ARROW-13119
URL: https://issues.apache.org/jira/browse/ARROW-13119
Project: Apache Arrow
Issue Type: Improvement
Components: R
Reporter: Ian Cook
Assignee: Ian Cook
Fix For: 5.0.0
Closely related to ARROW-13117 is the problem of {{type()}} and {{type_id()}}
not working for scalar expressions. For example, currently this happens:
{code:r}> Expression$scalar("foo")$type()
Error: !is.null(schema) is not TRUE
> Expression$scalar(42L)$type()
Error: !is.null(schema) is not TRUE{code}
This is what we want to happen:
{code:r}> Expression$scalar("foo")$type()
Utf8
string
> Expression$scalar(42L)$type()
Int32
int32{code}
This is simple to solve; we just need to set {{schema}} to an empty schema for
all scalar expressions.
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