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Code Issues Releases Wiki Activity

RelationshipExtensions has more type enforcement.

This commit is contained in:
kay.one 2013-03-26 01:00:46 -07:00
parent a9ad739745
commit e9b9e63f7a
1 changed files with 16 additions and 4 deletions
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20
NzbDrone.Core/Datastore/RelationshipExtensions.cs
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@ -8,26 +8,38 @@ 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)
public static RelationshipBuilder<TParent> HasOne<TParent, TChild>(this ColumnMapBuilder<TParent> columnMapBuilder, Expression<Func<TParent, LazyLoaded<TChild>>> portalExpression, Func<TParent, int> childIdSelector)
where TParent : ModelBase
where TChild : ModelBase
{
return columnMapBuilder.Relationships.AutoMapComplexTypeProperties<ILazyLoaded>()
.For(portalExpression)
.For(portalExpression.GetMemberName())
.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)
public static RelationshipBuilder<TParent> HasMany<TParent, TChild>(this ColumnMapBuilder<TParent> columnMapBuilder, Expression<Func<TParent, LazyList<TChild>>> portalExpression, Func<TParent, int> childIdSelector)
where TParent : ModelBase
where TChild : ModelBase
{
return columnMapBuilder.Relationships.AutoMapComplexTypeProperties<ILazyLoaded>()
.For(portalExpression)
.For(portalExpression.GetMemberName())
.LazyLoad((db, parent) => db.Query<TChild>().Where(c => c.Id == childIdSelector(parent)).ToList());
}
private static string GetMemberName<T, TMember>(this Expression<Func<T, TMember>> member)
{
var expression = member.Body as MemberExpression;
if (expression == null)
{
expression = (MemberExpression)((UnaryExpression)member.Body).Operand;
}
return expression.Member.Name;
}
}
}