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Add TimestampWithOffset canonical extension type #558

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Add TimestampWithOffset canonical extension type #558

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5dfba71
Add `TimestampWithOffset` extension type
serramatutu Oct 28, 2025
df33327
Allow dictionary encoding of `TimestampWithOffset`
serramatutu Dec 22, 2025
7d023b6
Allow run-end encoding of `TimestampWithOffset`
serramatutu Dec 22, 2025
9980eb2
Optimize `Values()` and `MarshalJSON()` for REE
serramatutu Dec 22, 2025
bd12287
General code smell patches
serramatutu Jan 30, 2026
cee17a3
Test with `-08:30` and `11:00` timezone
serramatutu Jan 30, 2026
e36a78f
Rename constructors
serramatutu Jan 30, 2026
cbf8f65
Leverage generics for REE and dict-encoding
serramatutu Feb 2, 2026
eff57e6
Add `UnsafeAppendBoolToBitmap()` to dict and REE builders
serramatutu Feb 3, 2026
2762d64
Make equals also check for data type
serramatutu Feb 3, 2026
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6 changes: 6 additions & 0 deletions arrow/array/dictionary.go
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Original file line number Diff line number Diff line change
Expand Up @@ -623,6 +623,12 @@ func (b *dictionaryBuilder) Release() {
}
}

func (b *dictionaryBuilder) UnsafeAppendBoolToBitmap(v bool) {
b.length += 1
b.nulls += 1
b.idxBuilder.UnsafeAppendBoolToBitmap(v)
}

func (b *dictionaryBuilder) AppendNull() {
b.length += 1
b.nulls += 1
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9 changes: 9 additions & 0 deletions arrow/array/encoded.go
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Original file line number Diff line number Diff line change
Expand Up @@ -386,6 +386,15 @@ func (b *RunEndEncodedBuilder) ContinueRun(n uint64) {
b.addLength(n)
}

func (b *RunEndEncodedBuilder) UnsafeAppendBoolToBitmap(v bool) {
if !v {
b.finishRun()
}

b.values.UnsafeAppendBoolToBitmap(v)
b.addLength(1)
}

func (b *RunEndEncodedBuilder) AppendNull() {
b.finishRun()
b.values.AppendNull()
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7 changes: 4 additions & 3 deletions arrow/extensions/extensions.go
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Original file line number Diff line number Diff line change
Expand Up @@ -21,11 +21,12 @@ import (
)

var canonicalExtensionTypes = []arrow.ExtensionType{
NewBool8Type(),
NewUUIDType(),
&OpaqueType{},
&JSONType{},
&OpaqueType{},
&TimestampWithOffsetType{},
&VariantType{},
NewBool8Type(),
NewUUIDType(),
}

func init() {
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