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Add TimestampWithOffset extension type #8743

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Add TimestampWithOffset extension type #8743

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f5adee7
Add `TimestampWithOffset` extension type
serramatutu Oct 23, 2025
4809af8
Update description to match new format
serramatutu Nov 12, 2025
c138eb9
Allow offsets to be dictionary encoded
serramatutu Nov 12, 2025
d187bb9
Allow offsets to be run end encoded
serramatutu Nov 12, 2025
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16 changes: 16 additions & 0 deletions arrow-schema/src/extension/canonical/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,8 @@ mod json;
pub use json::{Json, JsonMetadata};
mod opaque;
pub use opaque::{Opaque, OpaqueMetadata};
mod timestamp_with_offset;
pub use timestamp_with_offset::TimestampWithOffset;
mod uuid;
pub use uuid::Uuid;
mod variable_shape_tensor;
Expand Down Expand Up @@ -77,6 +79,11 @@ pub enum CanonicalExtensionType {
///
/// <https://arrow.apache.org/docs/format/CanonicalExtensions.html#bit-boolean>
Bool8(Bool8),

/// The extension type for `TimestampWithOffset`.
///
/// <https://arrow.apache.org/docs/format/CanonicalExtensions.html#timestamp-with-offset>
TimestampWithOffset(TimestampWithOffset),
}

impl TryFrom<&Field> for CanonicalExtensionType {
Expand All @@ -97,6 +104,9 @@ impl TryFrom<&Field> for CanonicalExtensionType {
Uuid::NAME => value.try_extension_type::<Uuid>().map(Into::into),
Opaque::NAME => value.try_extension_type::<Opaque>().map(Into::into),
Bool8::NAME => value.try_extension_type::<Bool8>().map(Into::into),
TimestampWithOffset::NAME => value
.try_extension_type::<TimestampWithOffset>()
.map(Into::into),
_ => Err(ArrowError::InvalidArgumentError(format!(
"Unsupported canonical extension type: {name}"
))),
Expand Down Expand Up @@ -148,3 +158,9 @@ impl From<Bool8> for CanonicalExtensionType {
CanonicalExtensionType::Bool8(value)
}
}

impl From<TimestampWithOffset> for CanonicalExtensionType {
fn from(value: TimestampWithOffset) -> Self {
CanonicalExtensionType::TimestampWithOffset(value)
}
}
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