Struct TodoSchema

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pub struct TodoSchema<T>(PhantomData<T>);
Expand description

A placeholder for a Codec impl that hasn’t yet gotten a real Schema.

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§0: PhantomData<T>

Trait Implementations§

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impl<T: Debug> Debug for TodoSchema<T>

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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<T> Default for TodoSchema<T>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<T> PartialEq for TodoSchema<T>

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: Debug + Send + Sync> Schema<T> for TodoSchema<T>

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type ArrowColumn = StructArray

The type of column we decode from, and encoder will finish into.
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type Statistics = NoneStats

Statistics we collect for a schema of this type.
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type Decoder = TodoColumnarDecoder<T>

Type that is able to decode values of T from Self::ArrowColumn.
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type Encoder = TodoColumnarEncoder<T>

Type that is able to encoder values of T.
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fn decoder(&self, _col: Self::ArrowColumn) -> Result<Self::Decoder, Error>

Returns a type that is able to decode instances of T from the provider column.
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fn encoder(&self) -> Result<Self::Encoder, Error>

Returns a type that can encode values of T.
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fn decoder_any(&self, col: &dyn Array) -> Result<Self::Decoder, Error>

Returns a type that is able to decode instances of T from a type erased arrow::array::Array, erroring if the provided array is not Self::ArrowColumn.

Auto Trait Implementations§

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impl<T> Freeze for TodoSchema<T>

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impl<T> RefUnwindSafe for TodoSchema<T>
where T: RefUnwindSafe,

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impl<T> Send for TodoSchema<T>
where T: Send,

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impl<T> Sync for TodoSchema<T>
where T: Sync,

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impl<T> Unpin for TodoSchema<T>
where T: Unpin,

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impl<T> UnwindSafe for TodoSchema<T>
where T: UnwindSafe,

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where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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Mutably borrows from an owned value. Read more
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Performs the cast.
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Returns the argument unchanged.

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