Struct arrow::ipc::gen::Message::FieldNode [−][src]
Expand description
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
Tuple Fields
0: [u8; 16]
Implementations
The number of value slots in the Arrow array at this level of a nested tree
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
Runs the verifier for this type, assuming its at position pos
in the verifier’s buffer.
Should not need to be called directly. Read more
Auto Trait Implementations
impl RefUnwindSafe for FieldNode
impl UnwindSafe for FieldNode
Blanket Implementations
Mutably borrows from an owned value. Read more