Struct ColumnMarker 

pub struct ColumnMarker {
    pub table: Cow<'static, str>,
    pub name: Cow<'static, str>,
}

A lightweight column identifier for use in selection descriptors.

Stores either borrowed static metadata or owned runtime strings so callers can avoid allocations for generated/schema-known columns without giving up support for dynamic names.

Fields

table: Cow<'static, str>

Table name.

name: Cow<'static, str>

Column name.

Implementations

impl ColumnMarker

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

Create a new column marker.

Accepts any type that implements Into<String>, so both &str literals and owned String values work without ceremony.

pub const fn from_static(table: &'static str, name: &'static str) -> Self

Create a new marker backed by borrowed static metadata.

pub fn alias(&self) -> String

Returns the join-safe alias for this column.

The alias uses the format “table__column” which is safe to use in queries with joins, preventing column name conflicts.

Example

use nautilus_core::ColumnMarker;

let marker = ColumnMarker::new("users", "id");
assert_eq!(marker.alias(), "users__id");

Trait Implementations

impl Clone for ColumnMarker

fn clone(&self) -> ColumnMarker

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnMarker

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

Formats the value using the given formatter.

impl Eq for ColumnMarker

impl<T> From<Column<T>> for ColumnMarker

Converts a typed column into a ColumnMarker for use in query building.

fn from(col: Column<T>) -> ColumnMarker

Converts to this type from the input type.

impl From<ColumnMarker> for SelectItem

fn from(marker: ColumnMarker) -> Self

Converts to this type from the input type.

impl PartialEq for ColumnMarker

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