Struct arrow::array::FixedSizeListBuilder [−][src]
pub struct FixedSizeListBuilder<T: ArrayBuilder> { /* fields omitted */ }
Array builder for ListArray
Implementations
impl<T: ArrayBuilder> FixedSizeListBuilder<T>
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impl<T: ArrayBuilder> FixedSizeListBuilder<T>
[src]pub fn new(values_builder: T, length: i32) -> Self
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Creates a new FixedSizeListBuilder
from a given values array builder
length
is the number of values within each array
pub fn with_capacity(values_builder: T, length: i32, capacity: usize) -> Self
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Creates a new FixedSizeListBuilder
from a given values array builder
length
is the number of values within each array
capacity
is the number of items to pre-allocate space for in this builder
impl<T: ArrayBuilder> FixedSizeListBuilder<T> where
T: 'static,
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impl<T: ArrayBuilder> FixedSizeListBuilder<T> where
T: 'static,
[src]pub fn values(&mut self) -> &mut T
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Returns the child array builder as a mutable reference.
This mutable reference can be used to append values into the child array builder,
but you must call append
to delimit each distinct list value.
pub fn value_length(&self) -> i32
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pub fn append(&mut self, is_valid: bool) -> Result<()>
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Finish the current variable-length list array slot
pub fn finish(&mut self) -> FixedSizeListArray
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Builds the FixedSizeListBuilder
and reset this builder.
Trait Implementations
impl<T: ArrayBuilder> ArrayBuilder for FixedSizeListBuilder<T> where
T: 'static,
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impl<T: ArrayBuilder> ArrayBuilder for FixedSizeListBuilder<T> where
T: 'static,
[src]fn as_any(&self) -> &dyn Any
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Returns the builder as a non-mutable Any
reference.
fn as_any_mut(&mut self) -> &mut dyn Any
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Returns the builder as a mutable Any
reference.
fn into_box_any(self: Box<Self>) -> Box<dyn Any>
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Returns the boxed builder as a box of Any
.
fn len(&self) -> usize
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Returns the number of array slots in the builder
fn is_empty(&self) -> bool
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Returns whether the number of array slots is zero
fn finish(&mut self) -> ArrayRef
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Builds the array and reset this builder.
impl<T: Debug + ArrayBuilder> Debug for FixedSizeListBuilder<T>
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impl<T: Debug + ArrayBuilder> Debug for FixedSizeListBuilder<T>
[src]Auto Trait Implementations
impl<T> RefUnwindSafe for FixedSizeListBuilder<T> where
T: RefUnwindSafe,
impl<T> RefUnwindSafe for FixedSizeListBuilder<T> where
T: RefUnwindSafe,
impl<T> Send for FixedSizeListBuilder<T> where
T: Send,
impl<T> Send for FixedSizeListBuilder<T> where
T: Send,
impl<T> Sync for FixedSizeListBuilder<T> where
T: Sync,
impl<T> Sync for FixedSizeListBuilder<T> where
T: Sync,
impl<T> Unpin for FixedSizeListBuilder<T> where
T: Unpin,
impl<T> Unpin for FixedSizeListBuilder<T> where
T: Unpin,
impl<T> UnwindSafe for FixedSizeListBuilder<T> where
T: UnwindSafe,
impl<T> UnwindSafe for FixedSizeListBuilder<T> where
T: UnwindSafe,