Struct Constraint 

pub struct Constraint {
    pub name: String,
    pub constraint_type: ConstraintType,
    pub columns: Vec<String>,
    pub ref_table: Option<String>,
    pub ref_columns: Option<Vec<String>>,
}

Constraint definition

Fields

name: String

Constraint name

constraint_type: ConstraintType

Constraint type

columns: Vec<String>

Columns involved

ref_table: Option<String>

Reference table (for foreign keys)

ref_columns: Option<Vec<String>>

Reference columns (for foreign keys)

Implementations

impl Constraint

pub fn new( name: impl Into<String>, constraint_type: ConstraintType, ) -> Constraint

Create a new constraint

pub fn on_columns(self, columns: Vec<String>) -> Constraint

Set columns

pub fn references(self, table: String, columns: Vec<String>) -> Constraint

Set foreign key reference

Trait Implementations

impl Clone for Constraint

fn clone(&self) -> Constraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Constraint

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

Formats the value using the given formatter.