[−][src]Struct arrow::builder::ListArrayBuilder
Array builder for ListArray
Methods
impl<T: ArrayBuilder> ListArrayBuilder<T>
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impl<T: ArrayBuilder> ListArrayBuilder<T>
pub fn new(values_builder: T) -> Self
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pub fn new(values_builder: T) -> Self
Creates a new ListArrayBuilder
from a given values array builder
impl<T: ArrayBuilder> ListArrayBuilder<T>
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impl<T: ArrayBuilder> ListArrayBuilder<T>
pub fn values(&mut self) -> &mut T
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pub fn values(&mut self) -> &mut T
Returns the child array builder as a mutable reference.
This mutable reference can be used to push values into the child array builder,
but you must call append
to delimit each distinct list value.
pub fn append(&mut self, is_valid: bool) -> Result<()>
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pub fn append(&mut self, is_valid: bool) -> Result<()>
Finish the current variable-length list array slot
Trait Implementations
impl<T: ArrayBuilder> ArrayBuilder for ListArrayBuilder<T> where
T: 'static,
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impl<T: ArrayBuilder> ArrayBuilder for ListArrayBuilder<T> where
T: 'static,
type ArrayType = ListArray
The type of array that this builder creates
fn into_any(self) -> Box<dyn Any>
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fn into_any(self) -> Box<dyn Any>
Returns the builder as an owned Any
type so that it can be downcast
to a specific
implementation before calling it's finish
method.
fn len(&self) -> usize
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fn len(&self) -> usize
Returns the number of array slots in the builder
fn finish(self) -> ListArray
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fn finish(self) -> ListArray
Builds the ListArray
Auto Trait Implementations
impl<T> Send for ListArrayBuilder<T> where
T: Send,
impl<T> Send for ListArrayBuilder<T> where
T: Send,
impl<T> Sync for ListArrayBuilder<T> where
T: Sync,
impl<T> Sync for ListArrayBuilder<T> where
T: Sync,
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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impl<T, U> Into for T where
U: From<T>,
impl<T> From for T
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impl<T> From for T
impl<T, U> TryFrom for T where
T: From<U>,
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impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
impl<T> Borrow for T where
T: ?Sized,
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impl<T> Borrow for T where
T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&self) -> TypeId
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fn get_type_id(&self) -> TypeId
impl<T> BorrowMut for T where
T: ?Sized,
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impl<T> BorrowMut for T where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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fn borrow_mut(&mut self) -> &mut T
impl<T, U> TryInto for T where
U: TryFrom<T>,
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impl<T, U> TryInto for T where
U: TryFrom<T>,