Struct ColumnSpec 

pub struct ColumnSpec {
    pub name: String,
    pub ty: ProtoFieldType,
    pub nullable: bool,
    pub comment: Option<Comment>,
}

A single column in a desired or live table schema.

Fields

name: String

Column name (verbatim; quoting applied at DDL-emit time).

ty: ProtoFieldType

Coarse sink-direction type (the 7-variant vocabulary that maps cleanly to Delta / Unity Catalog type names and carries widening rules).

nullable: bool

Whether the column admits NULL.

comment: Option<Comment>

Optional description and its authority.

Implementations

impl ColumnSpec

pub fn new(name: impl Into<String>, ty: ProtoFieldType) -> Self

Construct a nullable column with no comment.

pub fn with_nullable(self, nullable: bool) -> Self

Builder: set nullability.

pub fn with_comment(self, comment: Comment) -> Self

Builder: attach a comment.

Trait Implementations

impl Clone for ColumnSpec

fn clone(&self) -> ColumnSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnSpec

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

Formats the value using the given formatter.

impl PartialEq for ColumnSpec

fn eq(&self, other: &ColumnSpec) -> 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 Eq for ColumnSpec

impl StructuralPartialEq for ColumnSpec