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feat: implement CursorTrait for SelectFour #3058

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feat: implement CursorTrait for SelectFour #3058

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78 changes: 76 additions & 2 deletions src/executor/cursor.rs
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
use crate::{
ConnectionTrait, DbErr, EntityTrait, FromQueryResult, Identity, IdentityOf, IntoIdentity,
PartialModelTrait, PrimaryKeyToColumn, QuerySelect, Select, SelectModel, SelectThree,
SelectThreeModel, SelectTwo, SelectTwoModel, SelectorTrait, Topology,
PartialModelTrait, PrimaryKeyToColumn, QuerySelect, Select, SelectFour, SelectFourModel,
SelectModel, SelectThree, SelectThreeModel, SelectTwo, SelectTwoModel, SelectorTrait, Topology,
};
use sea_query::{
Condition, DynIden, Expr, ExprTrait, IntoValueTuple, Order, SeaRc, SelectStatement, SimpleExpr,
Expand Down Expand Up @@ -404,6 +404,21 @@ where
type Selector = SelectThreeModel<M, N, O>;
}

impl<E, F, G, H, M, N, O, P, TOP> CursorTrait for SelectFour<E, F, G, H, TOP>
where
E: EntityTrait<Model = M>,
F: EntityTrait<Model = N>,
G: EntityTrait<Model = O>,
H: EntityTrait<Model = P>,
M: FromQueryResult + Sized + Send + Sync,
N: FromQueryResult + Sized + Send + Sync,
O: FromQueryResult + Sized + Send + Sync,
P: FromQueryResult + Sized + Send + Sync,
TOP: Topology,
{
type Selector = SelectFourModel<M, N, O, P>;
}

impl<E, F, M, N> SelectTwo<E, F>
where
E: EntityTrait<Model = M>,
Expand Down Expand Up @@ -502,6 +517,65 @@ where
}
}

impl<E, F, G, H, M, N, O, P, TOP> SelectFour<E, F, G, H, TOP>
where
E: EntityTrait<Model = M>,
F: EntityTrait<Model = N>,
G: EntityTrait<Model = O>,
H: EntityTrait<Model = P>,
M: FromQueryResult + Sized + Send + Sync,
N: FromQueryResult + Sized + Send + Sync,
O: FromQueryResult + Sized + Send + Sync,
P: FromQueryResult + Sized + Send + Sync,
TOP: Topology,
{
/// Convert into a cursor using column of first entity
pub fn cursor_by<C>(self, order_columns: C) -> Cursor<SelectFourModel<M, N, O, P>>
where
C: IdentityOf<E>,
{
let mut cursor = Cursor::new(
self.query,
SeaRc::new(E::default()),
order_columns.identity_of(),
);
{
let primary_keys: Vec<(DynIden, Identity)> = <F::PrimaryKey as Iterable>::iter()
.map(|pk| {
(
SeaRc::new(F::default()),
Identity::Unary(SeaRc::new(pk.into_column())),
)
})
.collect();
cursor.set_secondary_order_by(primary_keys);
}
{
let primary_keys: Vec<(DynIden, Identity)> = <G::PrimaryKey as Iterable>::iter()
.map(|pk| {
(
SeaRc::new(G::default()),
Identity::Unary(SeaRc::new(pk.into_column())),
)
})
.collect();
cursor.set_secondary_order_by(primary_keys);
}
{
let primary_keys: Vec<(DynIden, Identity)> = <H::PrimaryKey as Iterable>::iter()
.map(|pk| {
(
SeaRc::new(H::default()),
Identity::Unary(SeaRc::new(pk.into_column())),
)
})
.collect();
cursor.set_secondary_order_by(primary_keys);
}
cursor
}
}

#[cfg(test)]
#[cfg(feature = "mock")]
mod tests {
Expand Down