Enum MetadataVersion

#[repr(i16)]
pub enum MetadataVersion {
    V1 = 0,
    V2 = 1,
    V3 = 2,
    V4 = 3,
    V5 = 4,
}

The enum MetadataVersion in the namespace org.apache.arrow.flatbuf

Generated from these locations:

• Enum MetadataVersion in the file Schema.fbs:31

Variants

V1 = 0

0.1.0 (October 2016).

V2 = 1

0.2.0 (February 2017). Non-backwards compatible with V1.

V3 = 2

0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.

V4 = 3

= 0.8.0 (December 2017). Non-backwards compatible with V3.

V5 = 4

= 1.0.0 (July 2020). Backwards compatible with V4 (V5 readers can read V4 metadata and IPC messages). Implementations are recommended to provide a V4 compatibility mode with V5 format changes disabled.

Incompatible changes between V4 and V5:

• Union buffer layout has changed. In V5, Unions don’t have a validity bitmap buffer.

Implementations

impl MetadataVersion

pub const ENUM_VALUES: [Self; 5]

Array containing all valid variants of MetadataVersion

Trait Implementations

impl Clone for MetadataVersion

fn clone(&self) -> MetadataVersion

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MetadataVersion

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MetadataVersion

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<MetadataVersion> for i16

fn from(value: MetadataVersion) -> Self

Converts to this type from the input type.

impl Hash for MetadataVersion

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 MetadataVersion

fn cmp(&self, other: &MetadataVersion) -> 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 MetadataVersion

fn eq(&self, other: &MetadataVersion) -> 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 MetadataVersion

fn partial_cmp(&self, other: &MetadataVersion) -> 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 MetadataVersion

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<i16> for MetadataVersion

type Error = UnknownEnumTagKind

The type returned in the event of a conversion error.

fn try_from(value: i16) -> Result<Self, UnknownEnumTagKind>

Performs the conversion.

impl Copy for MetadataVersion

impl Eq for MetadataVersion

impl StructuralPartialEq for MetadataVersion

impl VectorWrite<MetadataVersion> for MetadataVersion

Safety

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

impl WriteAs<MetadataVersion> for MetadataVersion

impl WriteAsDefault<MetadataVersion, MetadataVersion> for MetadataVersion

impl WriteAsOptional<MetadataVersion> for MetadataVersion