Enum parser_database::ast::FieldArity

pub enum FieldArity {
    Required,
    Optional,
    List,
}

An arity of a data model field.

Variants

Required

The field either must be in an insert statement, or the field must have a default value for the insert to succeed.

name String

Optional

The field does not need to be in an insert statement for the write to succeed.

name String?

List

The field can have multiple values stored in the same column.

name String[]

Implementations

impl FieldArity

pub fn is_list(&self) -> bool

pub fn is_optional(&self) -> bool

pub fn is_required(&self) -> bool

Trait Implementations

impl Clone for FieldArity

fn clone(&self) -> FieldArity

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FieldArity

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

Formats the value using the given formatter.

impl Hash for FieldArity

fn hash<__H>(&self, state: &mut __H)where __H: Hasher,

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 PartialEq for FieldArity

fn eq(&self, other: &FieldArity) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FieldArity

impl Eq for FieldArity

impl StructuralEq for FieldArity

impl StructuralPartialEq for FieldArity