Struct FieldNode

pub struct FieldNode {
    pub length: i64,
    pub null_count: i64,
}

---

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 with values [[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

Generated from these locations:

• Struct FieldNode in the file Message.fbs:34

Fields

length: i64

The number of value slots in the Arrow array at this level of a nested tree

null_count: i64

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

fn clone(&self) -> FieldNode

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FieldNode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FieldNode

fn default() -> FieldNode

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FieldNode

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'a> From<FieldNodeRef<'a>> for FieldNode

fn from(value: FieldNodeRef<'a>) -> Self

Converts to this type from the input type.

impl Hash for FieldNode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for FieldNode

fn cmp(&self, other: &FieldNode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for FieldNode

fn eq(&self, other: &FieldNode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for FieldNode

fn partial_cmp(&self, other: &FieldNode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for FieldNode

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for FieldNode

impl Eq for FieldNode

impl StructuralPartialEq for FieldNode

impl VectorWrite<FieldNode> for FieldNode

Safety

The planus compiler generates implementations that initialize the bytes in write_values.

impl WriteAs<FieldNode> for FieldNode

impl WriteAsOffset<FieldNode> for FieldNode

impl WriteAsOptional<FieldNode> for FieldNode