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DecodedColumn

Enum DecodedColumn 

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pub enum DecodedColumn {
Show 14 variants I64(Vec<i64>), U64(Vec<u64>), F64(Vec<f64>), Bool(Vec<bool>), String(Vec<String>), Decimal(Vec<i128>), Bytes(Vec<Vec<u8>>), NullableI64(Vec<Option<i64>>), NullableU64(Vec<Option<u64>>), NullableF64(Vec<Option<f64>>), NullableBool(Vec<Option<bool>>), NullableString(Vec<Option<String>>), NullableDecimal(Vec<Option<i128>>), NullableBytes(Vec<Option<Vec<u8>>>),
}
Expand description

Typed column values returned by ColumnDecoder.

Each variant wraps a Vec of the corresponding Rust type. Nullable variants use Option<T> where None represents a null value.

Has a custom PartialEq implementation that uses bitwise comparison for f64 values so that NaN == NaN holds.

Variants§

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I64(Vec<i64>)

Signed 64-bit integers (timestamps or i64 fields).

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U64(Vec<u64>)

Unsigned 64-bit integers.

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F64(Vec<f64>)

64-bit floating point values.

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Bool(Vec<bool>)

Boolean values.

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String(Vec<String>)

UTF-8 string values.

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Decimal(Vec<i128>)

Exact decimal mantissas — mantissa × 10⁻ˢᶜᵃˡᵉ, with the scale held by the column rather than by each value.

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Bytes(Vec<Vec<u8>>)

Opaque byte strings — a composite value’s own encoding, carried whole.

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NullableI64(Vec<Option<i64>>)

Nullable signed 64-bit integers.

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NullableU64(Vec<Option<u64>>)

Nullable unsigned 64-bit integers.

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NullableF64(Vec<Option<f64>>)

Nullable 64-bit floating point values.

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NullableBool(Vec<Option<bool>>)

Nullable boolean values.

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NullableString(Vec<Option<String>>)

Nullable UTF-8 string values.

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NullableDecimal(Vec<Option<i128>>)

Nullable decimal mantissas.

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NullableBytes(Vec<Option<Vec<u8>>>)

Nullable byte strings.

Implementations§

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impl DecodedColumn

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pub fn len(&self) -> usize

Returns the number of values in this decoded column.

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pub fn is_empty(&self) -> bool

Returns true if this decoded column contains no values.

Trait Implementations§

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impl Clone for DecodedColumn

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fn clone(&self) -> DecodedColumn

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DecodedColumn

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for DecodedColumn

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more