[−][src]Struct arrow::ipc::gen::Message::FieldNode
Data structures for describing a table row batch (a collection of equal-length Arrow arrays) Metadata about a field at some level of a nested type tree (but not its children).
For example, a List[[1, 2, 3], null, [4], [5, 6], null]
would have {length: 5, null_count: 2} for its List node, and {length: 6,
null_count: 0} for its Int16 node, as separate FieldNode structs
Implementations
impl FieldNode
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pub fn new(_length: i64, _null_count: i64) -> Self
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pub fn length(&self) -> i64
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The number of value slots in the Arrow array at this level of a nested tree
pub fn null_count(&self) -> i64
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The number of observed nulls. Fields with null_count == 0 may choose not to write their physical validity bitmap out as a materialized buffer, instead setting the length of the bitmap buffer to 0.
Trait Implementations
impl Clone for FieldNode
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impl Copy for FieldNode
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impl Debug for FieldNode
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impl<'a> Follow<'a> for FieldNode
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impl<'a> Follow<'a> for &'a FieldNode
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impl PartialEq<FieldNode> for FieldNode
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impl<'b> Push for FieldNode
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type Output = FieldNode
fn push(&self, dst: &mut [u8], _rest: &[u8])
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pub fn size() -> usize
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pub fn alignment() -> PushAlignment
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impl<'b> Push for &'b FieldNode
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type Output = FieldNode
fn push(&self, dst: &mut [u8], _rest: &[u8])
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pub fn size() -> usize
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pub fn alignment() -> PushAlignment
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impl SafeSliceAccess for FieldNode
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impl SimpleToVerifyInSlice for FieldNode
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impl StructuralPartialEq for FieldNode
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impl<'a> Verifiable for FieldNode
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fn run_verifier<'o, 'b>(
v: &mut Verifier<'o, 'b>,
pos: usize
) -> Result<(), InvalidFlatbuffer>
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v: &mut Verifier<'o, 'b>,
pos: usize
) -> Result<(), InvalidFlatbuffer>
Auto Trait Implementations
impl RefUnwindSafe for FieldNode
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impl Send for FieldNode
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impl Sync for FieldNode
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impl Unpin for FieldNode
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impl UnwindSafe for FieldNode
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,