risingwave_meta_model_migration::sea_orm

Struct RelationBuilder

pub struct RelationBuilder<E, R>where
    E: EntityTrait,
    R: EntityTrait,{
    entities: PhantomData<(E, R)>,
    rel_type: RelationType,
    from_tbl: TableRef,
    to_tbl: TableRef,
    from_col: Option<Identity>,
    to_col: Option<Identity>,
    is_owner: bool,
    on_delete: Option<ForeignKeyAction>,
    on_update: Option<ForeignKeyAction>,
    on_condition: Option<Box<dyn Fn(SeaRc<dyn Iden>, SeaRc<dyn Iden>) -> Condition + Sync + Send>>,
    fk_name: Option<String>,
    condition_type: ConditionType,
}

Expand description

Defines a helper to build a relation

Fields§

§entities: PhantomData<(E, R)>§rel_type: RelationType§from_tbl: TableRef§to_tbl: TableRef§from_col: Option<Identity>§to_col: Option<Identity>§is_owner: bool§on_delete: Option<ForeignKeyAction>§on_update: Option<ForeignKeyAction>§on_condition: Option<Box<dyn Fn(SeaRc<dyn Iden>, SeaRc<dyn Iden>) -> Condition + Sync + Send>>§fk_name: Option<String>§condition_type: ConditionType

Implementations§

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impl<E, R> RelationBuilder<E, R>
where E: EntityTrait, R: EntityTrait,

pub fn from<T>(self, identifier: T) -> RelationBuilder<E, R>
where T: IdentityOf<E>,

Build a relationship from an Entity

pub fn to<T>(self, identifier: T) -> RelationBuilder<E, R>
where T: IdentityOf<R>,

Build a relationship to an Entity

pub fn on_delete(self, action: ForeignKeyAction) -> RelationBuilder<E, R>

An operation to perform on a foreign key when a delete operation occurs

pub fn on_update(self, action: ForeignKeyAction) -> RelationBuilder<E, R>

An operation to perform on a foreign key when an update operation occurs

pub fn on_condition<F>(self, f: F) -> RelationBuilder<E, R>
where F: Fn(SeaRc<dyn Iden>, SeaRc<dyn Iden>) -> Condition + 'static + Send + Sync,

Set custom join ON condition.

This method takes a closure with parameters denoting the left-hand side and right-hand side table in the join expression.

pub fn fk_name(self, fk_name: &str) -> RelationBuilder<E, R>

Set the name of foreign key constraint

pub fn condition_type( self, condition_type: ConditionType, ) -> RelationBuilder<E, R>

Set the condition type of join on expression

Trait Implementations§

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impl<E, R> Debug for RelationBuilder<E, R>
where E: EntityTrait, R: EntityTrait,

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

Formats the value using the given formatter. Read more

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impl<E, R> From<RelationBuilder<E, R>> for RelationDef
where E: EntityTrait, R: EntityTrait,

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fn from(b: RelationBuilder<E, R>) -> RelationDef

Converts to this type from the input type.

Auto Trait Implementations§

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Struct RelationBuilder Copy item path

Fields§

Implementations§

impl<E, R> RelationBuilder<E, R>where E: EntityTrait, R: EntityTrait,

pub fn from<T>(self, identifier: T) -> RelationBuilder<E, R>where T: IdentityOf<E>,

pub fn to<T>(self, identifier: T) -> RelationBuilder<E, R>where T: IdentityOf<R>,

pub fn on_delete(self, action: ForeignKeyAction) -> RelationBuilder<E, R>

pub fn on_update(self, action: ForeignKeyAction) -> RelationBuilder<E, R>

pub fn on_condition<F>(self, f: F) -> RelationBuilder<E, R>where F: Fn(SeaRc<dyn Iden>, SeaRc<dyn Iden>) -> Condition + 'static + Send + Sync,

pub fn fk_name(self, fk_name: &str) -> RelationBuilder<E, R>

pub fn condition_type( self, condition_type: ConditionType, ) -> RelationBuilder<E, R>

Trait Implementations§

impl<E, R> Debug for RelationBuilder<E, R>where E: EntityTrait, R: EntityTrait,

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

impl<E, R> From<RelationBuilder<E, R>> for RelationDefwhere E: EntityTrait, R: EntityTrait,

fn from(b: RelationBuilder<E, R>) -> RelationDef

Auto Trait Implementations§

impl<E, R> Freeze for RelationBuilder<E, R>

impl<E, R> !RefUnwindSafe for RelationBuilder<E, R>

impl<E, R> Send for RelationBuilder<E, R>

impl<E, R> Sync for RelationBuilder<E, R>

impl<E, R> Unpin for RelationBuilder<E, R>where E: Unpin, R: Unpin,

impl<E, R> !UnwindSafe for RelationBuilder<E, R>

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<U> As for U

fn as_<T>(self) -> Twhere T: CastFrom<U>,

impl<T> AsAny for Twhere T: Any,

fn as_any(&self) -> &(dyn Any + 'static)

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

fn type_name(&self) -> &'static str

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> Downcast for Twhere T: AsAny + ?Sized,

fn is<T>(&self) -> boolwhere T: AsAny,

fn downcast_ref<T>(&self) -> Option<&T>where T: AsAny,

fn downcast_mut<T>(&mut self) -> Option<&mut T>where T: AsAny,

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘwhere F: FnOnce(&Self) -> bool,

impl<T> IntoRequest<T> for T

fn into_request(self) -> Request<T>

impl<L> LayerExt<L> for L

fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>where L: Layer<S>,

impl<T> Pointable for T

const ALIGN: usize

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> PolicyExt for Twhere T: ?Sized,

fn and<P, B, E>(self, other: P) -> And<T, P>where T: Policy<B, E>, P: Policy<B, E>,

fn or<P, B, E>(self, other: P) -> Or<T, P>where T: Policy<B, E>, P: Policy<B, E>,

impl<T> Same for T

type Output = T

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>

impl<T> MaybeSend for Twhere T: Send,

Struct RelationBuilder

impl<E, R> RelationBuilder<E, R>
where E: EntityTrait, R: EntityTrait,

pub fn from<T>(self, identifier: T) -> RelationBuilder<E, R>
where T: IdentityOf<E>,

pub fn to<T>(self, identifier: T) -> RelationBuilder<E, R>
where T: IdentityOf<R>,

pub fn on_condition<F>(self, f: F) -> RelationBuilder<E, R>
where F: Fn(SeaRc<dyn Iden>, SeaRc<dyn Iden>) -> Condition + 'static + Send + Sync,

impl<E, R> Debug for RelationBuilder<E, R>
where E: EntityTrait, R: EntityTrait,

impl<E, R> From<RelationBuilder<E, R>> for RelationDef
where E: EntityTrait, R: EntityTrait,

impl<E, R> Unpin for RelationBuilder<E, R>
where E: Unpin, R: Unpin,

impl<T> Any for T
where T: 'static + ?Sized,

fn as_<T>(self) -> T
where T: CastFrom<U>,

impl<T> AsAny for T
where T: Any,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> Downcast for T
where T: AsAny + ?Sized,

fn is<T>(&self) -> bool
where T: AsAny,

fn downcast_ref<T>(&self) -> Option<&T>
where T: AsAny,

fn downcast_mut<T>(&mut self) -> Option<&mut T>
where T: AsAny,

impl<T, U> Into<U> for T
where U: From<T>,

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>
where L: Layer<S>,

impl<T> PolicyExt for T
where T: ?Sized,

fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

impl<T> MaybeSend for T
where T: Send,