Struct arrow::ipc::gen::Message::FieldNode [−][src]
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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impl FieldNode
[src]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 set_length(&mut self, x: i64)
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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.
pub fn set_null_count(&mut self, x: i64)
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Trait Implementations
impl SafeSliceAccess for FieldNode
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impl SafeSliceAccess for FieldNode
[src]impl SimpleToVerifyInSlice for FieldNode
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impl SimpleToVerifyInSlice for FieldNode
[src]impl StructuralPartialEq for FieldNode
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impl StructuralPartialEq for FieldNode
[src]impl<'a> Verifiable for FieldNode
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impl<'a> Verifiable for FieldNode
[src]fn run_verifier(
v: &mut Verifier<'_, '_>,
pos: usize
) -> Result<(), InvalidFlatbuffer>
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v: &mut Verifier<'_, '_>,
pos: usize
) -> Result<(), InvalidFlatbuffer>
Auto Trait Implementations
impl RefUnwindSafe for FieldNode
impl RefUnwindSafe for FieldNode
impl UnwindSafe for FieldNode
impl UnwindSafe for FieldNode