feat: make FixedSizeList scalar also an ArrayRef #8221
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wjones127
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enhancement
wjones127
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|
cc @jayzhan211 |
This was referenced Nov 15, 2023
jayzhan211
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Nov 15, 2023
| @@ -1032,8 +1020,11 @@ impl ScalarValue { | |||
| ScalarValue::Binary(v) => v.is_none(), | |||
| ScalarValue::FixedSizeBinary(_, v) => v.is_none(), | |||
| ScalarValue::LargeBinary(v) => v.is_none(), | |||
| ScalarValue::Fixedsizelist(v, ..) => v.is_none(), | |||
| ScalarValue::List(arr) => arr.len() == arr.null_count(), | |||
| // arr.len() should be 1 for a list scalar, but we don't seem to | |||
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why arr.len() should be 1? I thought it can be any kind of ListArray
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If arr.len() > 1, it isn't a scalar. arr is a ListArray or FixedSizeListArray, so arr.len() == 1 means there is one list.
I think we dont need, we just assume we have FixedSizeList as ArrayRef |
jayzhan211
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Nov 16, 2023
Weijun-H
approved these changes
Nov 16, 2023
comphead
approved these changes
Nov 16, 2023
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Which issue does this PR close?
Changes
ScalarValue::FixedSizeList()to wrap anArrayRef. This is an API breaking change, so while I did this I also fixed the capitalization of the nameFixedsizelisttoFixedSizeList, so it's consistent with the data and array type in arrow-rs.Closes #8218.
Rationale for this change
We can re-use a lot of functions with
ScalarValue::List, and this representation leaves less room for invalid state (for example, previously one could create a scalar that contained scalar values of varying data type).What changes are included in this PR?
ScalarValue::FixedsizelisttoScalarValue::FixedSizeList.ScalarValue::FixedSizeListto wrap an array ref.Are these changes tested?
There's not much testing for this type. I can work on adding more tests in #8220.
Are there any user-facing changes?
Yes, this is a breaking API change.