Struct arrow::array::MapBuilder

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pub struct MapBuilder<K: ArrayBuilder, V: ArrayBuilder> { /* private fields */ }

Implementations

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impl<K: ArrayBuilder, V: ArrayBuilder> MapBuilder<K, V>

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pub fn new(
 field_names: Option<MapFieldNames>,
 key_builder: K,
 value_builder: V
) -> Self

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pub fn with_capacity(
 field_names: Option<MapFieldNames>,
 key_builder: K,
 value_builder: V,
 capacity: usize
) -> Self

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pub fn keys(&mut self) -> &mut K

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pub fn values(&mut self) -> &mut V

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pub fn append(&mut self, is_valid: bool) -> Result<()>

Finish the current map array slot

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pub fn finish(&mut self) -> MapArray

Trait Implementations

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impl<K: ArrayBuilder, V: ArrayBuilder> ArrayBuilder for MapBuilder<K, V>

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fn len(&self) -> usize

Returns the number of array slots in the builder

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fn is_empty(&self) -> bool

Returns whether number of array slots is zero

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fn finish(&mut self) -> ArrayRef

Builds the array

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fn as_any(&self) -> &dyn Any

Returns the builder as a non-mutable Any reference. Read more

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fn as_any_mut(&mut self) -> &mut dyn Any

Returns the builder as a mutable Any reference. Read more

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fn into_box_any(self: Box<Self>) -> Box<dyn Any>

Returns the boxed builder as a box of Any.

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impl<K: Debug + ArrayBuilder, V: Debug + ArrayBuilder> Debug for MapBuilder<K, V>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<K, V> RefUnwindSafe for MapBuilder<K, V> where
K: RefUnwindSafe,
V: RefUnwindSafe,

impl<K, V> Send for MapBuilder<K, V>

impl<K, V> Sync for MapBuilder<K, V> where
K: Sync,
V: Sync,

impl<K, V> Unpin for MapBuilder<K, V> where
K: Unpin,
V: Unpin,

impl<K, V> UnwindSafe for MapBuilder<K, V> where
K: UnwindSafe,
V: UnwindSafe,

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,

const: unstable · source

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,

const: unstable · source

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

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

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 for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct arrow::array::MapBuilder

Implementations

impl<K: ArrayBuilder, V: ArrayBuilder> MapBuilder<K, V>

pub fn new( field_names: Option<MapFieldNames>, key_builder: K, value_builder: V) -> Self

pub fn with_capacity( field_names: Option<MapFieldNames>, key_builder: K, value_builder: V, capacity: usize) -> Self

pub fn keys(&mut self) -> &mut K

pub fn values(&mut self) -> &mut V

pub fn append(&mut self, is_valid: bool) -> Result<()>

pub fn finish(&mut self) -> MapArray

Trait Implementations

impl<K: ArrayBuilder, V: ArrayBuilder> ArrayBuilder for MapBuilder<K, V>

fn len(&self) -> usize

fn is_empty(&self) -> bool

fn finish(&mut self) -> ArrayRef

fn as_any(&self) -> &dyn Any

fn as_any_mut(&mut self) -> &mut dyn Any

fn into_box_any(self: Box<Self>) -> Box<dyn Any>

impl<K: Debug + ArrayBuilder, V: Debug + ArrayBuilder> Debug for MapBuilder<K, V>

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

Auto Trait Implementations

impl<K, V> RefUnwindSafe for MapBuilder<K, V> where K: RefUnwindSafe, V: RefUnwindSafe,

impl<K, V> Send for MapBuilder<K, V>

impl<K, V> Sync for MapBuilder<K, V> where K: Sync, V: Sync,

impl<K, V> Unpin for MapBuilder<K, V> where K: Unpin, V: Unpin,

impl<K, V> UnwindSafe for MapBuilder<K, V> where K: UnwindSafe, V: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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

fn vzip(self) -> V

pub fn new(
field_names: Option<MapFieldNames>,
key_builder: K,
value_builder: V
) -> Self

pub fn with_capacity(
field_names: Option<MapFieldNames>,
key_builder: K,
value_builder: V,
capacity: usize
) -> Self

impl<K, V> RefUnwindSafe for MapBuilder<K, V> where
K: RefUnwindSafe,
V: RefUnwindSafe,

impl<K, V> Sync for MapBuilder<K, V> where
K: Sync,
V: Sync,

impl<K, V> Unpin for MapBuilder<K, V> where
K: Unpin,
V: Unpin,

impl<K, V> UnwindSafe for MapBuilder<K, V> where
K: UnwindSafe,
V: UnwindSafe,

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

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