Struct parquet::schema::types::GroupTypeBuilder

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pub struct GroupTypeBuilder<'a> { /* private fields */ }
Expand description

A builder for group types. All attributes are optional except the name. Note that if not specified explicitly, None is used as the repetition of the group, which means it is a root (message) type.

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impl<'a> GroupTypeBuilder<'a>

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pub fn new(name: &'a str) -> Self

Creates new group type builder with provided field name.

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pub fn with_repetition(self, repetition: Repetition) -> Self

Sets Repetition for this field and returns itself.

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pub fn with_converted_type(self, converted_type: ConvertedType) -> Self

Sets ConvertedType for this field and returns itself.

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pub fn with_logical_type(self, logical_type: Option<LogicalType>) -> Self

Sets LogicalType for this field and returns itself.

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pub fn with_fields(self, fields: Vec<TypePtr>) -> Self

Sets a list of fields that should be child nodes of this field. Returns updated self.

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pub fn with_id(self, id: Option<i32>) -> Self

Sets optional field id and returns itself.

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pub fn build(self) -> Result<Type>

Creates a new GroupType instance from the gathered attributes.

Auto Trait Implementations§

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impl<'a> Freeze for GroupTypeBuilder<'a>

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impl<'a> RefUnwindSafe for GroupTypeBuilder<'a>

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impl<'a> Send for GroupTypeBuilder<'a>

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impl<'a> Sync for GroupTypeBuilder<'a>

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impl<'a> Unpin for GroupTypeBuilder<'a>

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impl<'a> UnwindSafe for GroupTypeBuilder<'a>

Blanket Implementations§

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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> 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, 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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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