github/lidarr
1
0
Fork 0
mirror of https://github.com/lidarr/lidarr.git synced 2025-07-30 19:50:15 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

created HasOne, HasMany relationship extension.

Browse source
This commit is contained in:
kay.one 2013-03-26 00:50:18 -07:00
parent a2b91b469e
commit a9ad739745
4 changed files with 87 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

33
NzbDrone.Core/Datastore/RelationshipExtensions.cs Normal file
View file

@ -0,0 +1,33 @@
using System;
using System.Linq;
using System.Linq.Expressions;
using Marr.Data;
using Marr.Data.Mapping;
namespace NzbDrone.Core.Datastore
{
public static class RelationshipExtensions
{
public static RelationshipBuilder<TParent> HasOne<TParent, TChild>(this ColumnMapBuilder<TParent> columnMapBuilder, Expression<Func<TParent, object>> portalExpression, Func<TParent, int> childIdSelector)
where TParent : ModelBase
where TChild : ModelBase
{
return columnMapBuilder.Relationships.AutoMapComplexTypeProperties<ILazyLoaded>()
.For(portalExpression)
.LazyLoad((db, parent) => db.Query<TChild>().Single(c => c.Id == childIdSelector(parent)));
}
public static RelationshipBuilder<TParent> HasMany<TParent, TChild>(this ColumnMapBuilder<TParent> columnMapBuilder, Expression<Func<TParent, object>> portalExpression, Func<TParent, int> childIdSelector)
where TParent : ModelBase
where TChild : ModelBase
{
return columnMapBuilder.Relationships.AutoMapComplexTypeProperties<ILazyLoaded>()
.For(portalExpression)
.LazyLoad((db, parent) => db.Query<TChild>().Where(c => c.Id == childIdSelector(parent)).ToList());
}
}
}