Struct AvroDataType

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pub struct AvroDataType {
    nullability: Option<Nullability>,
    metadata: HashMap<String, String>,
    codec: Codec,
}
Expand description

An Avro datatype mapped to the arrow data model

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§nullability: Option<Nullability>§metadata: HashMap<String, String>§codec: Codec

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impl AvroDataType

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pub fn field_with_name(&self, name: &str) -> Field

Returns an arrow [Field] with the given name

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pub fn codec(&self) -> &Codec

Returns a reference to the codec used by this data type

The codec determines how Avro data is encoded and mapped to Arrow data types. This is useful when we need to inspect or use the specific encoding of a field.

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pub fn nullability(&self) -> Option<Nullability>

Returns the nullability status of this data type

In Avro, nullability is represented through unions with null types. The returned value indicates how nulls are encoded in the Avro format:

  • Some(Nullability::NullFirst) - Nulls are encoded as the first union variant
  • Some(Nullability::NullSecond) - Nulls are encoded as the second union variant
  • None - The type is not nullable

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impl Clone for AvroDataType

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fn clone(&self) -> AvroDataType

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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> 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<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, 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> 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 = Infallible

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

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> Allocation for T
where T: RefUnwindSafe + Send + Sync,