Struct ColumnLayout 

pub struct ColumnLayout {
    pub name: String,
    pub data_type: u8,
    pub nullable: bool,
    pub default: Option<Vec<u8>>,
    pub vector_dim: Option<u32>,
    pub compress: bool,
    pub enum_variants: Vec<String>,
    pub decimal_precision: u8,
    pub element_type: Option<u8>,
    pub metadata: Vec<(String, String)>,
}

Plain, engine-agnostic view of a persisted column definition.

Fields

name: String

Column name.

data_type: u8

DataType discriminant byte.

nullable: bool

Whether NULL is allowed.

default: Option<Vec<u8>>

Serialized default value, if any.

vector_dim: Option<u32>

Vector dimension, if any.

compress: bool

Per-column compression flag.

enum_variants: Vec<String>

Enum variant labels (for enum-typed columns).

decimal_precision: u8

Decimal precision.

element_type: Option<u8>

Array element DataType discriminant byte, if any.

metadata: Vec<(String, String)>

Column metadata (key, value) pairs in persistence order.

Trait Implementations

impl Clone for ColumnLayout

fn clone(&self) -> ColumnLayout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnLayout

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

Formats the value using the given formatter.

impl PartialEq for ColumnLayout

fn eq(&self, other: &ColumnLayout) -> 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 StructuralPartialEq for ColumnLayout