Enum SchemaConstraint 

pub enum SchemaConstraint {
    Unique {
        fields: Vec<String>,
    },
    Index {
        fields: Vec<String>,
        name: String,
    },
    Check {
        expression: String,
    },
    ForeignKey {
        field: String,
        references: String,
        on_delete: ReferentialAction,
    },
}

Schema constraints for validation.

Variants

Unique

Fields

fields: Vec<String>

Index

Fields

fields: Vec<String>

name: String

Check

Fields

expression: String

ForeignKey

Fields

field: String

references: String

on_delete: ReferentialAction

Trait Implementations

impl Archive for SchemaConstraint

where Vec<String>: Archive, String: Archive, ReferentialAction: Archive,

type Archived = ArchivedSchemaConstraint

The archived representation of this type.

type Resolver = SchemaConstraintResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

unsafe fn resolve( &self, pos: usize, resolver: <Self as Archive>::Resolver, out: *mut <Self as Archive>::Archived, )

Creates the archived version of this value at the given position and writes it to the given output.

impl Clone for SchemaConstraint

fn clone(&self) -> SchemaConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaConstraint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SchemaConstraint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<__D: Fallible + ?Sized> Deserialize<SchemaConstraint, __D> for Archived<SchemaConstraint>

where Vec<String>: Archive, Archived<Vec<String>>: Deserialize<Vec<String>, __D>, String: Archive, Archived<String>: Deserialize<String, __D>, ReferentialAction: Archive, Archived<ReferentialAction>: Deserialize<ReferentialAction, __D>,

fn deserialize( &self, deserializer: &mut __D, ) -> Result<SchemaConstraint, __D::Error>

Deserializes using the given deserializer

impl PartialEq for SchemaConstraint

fn eq(&self, other: &SchemaConstraint) -> 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<__S: Fallible + ?Sized> Serialize<__S> for SchemaConstraint

where Vec<String>: Serialize<__S>, String: Serialize<__S>, ReferentialAction: Serialize<__S>,

fn serialize( &self, serializer: &mut __S, ) -> Result<<Self as Archive>::Resolver, __S::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl Serialize for SchemaConstraint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SchemaConstraint