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added condition to lazy loading of relationship objects

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no db calls will be made if foreign key is 0.
This commit is contained in:
kay.one
2013-05-21 22:30:54 -07:00
parent f5a68782ce
commit 28b47b415f
4 changed files with 56 additions and 34 deletions
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6
NzbDrone.Core/Datastore/RelationshipExtensions.cs
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@@ -13,8 +13,10 @@ namespace NzbDrone.Core.Datastore
where TChild : ModelBase
{
return relationshipBuilder.For(portalExpression.GetMemberName())
.LazyLoad((db, parent) => db.Query<TChild>()
.SingleOrDefault(c => c.Id == childIdSelector(parent)));
.LazyLoad(
query: (db, parent) => db.Query<TChild>().SingleOrDefault(c => c.Id == childIdSelector(parent)),
condition: parent => childIdSelector(parent) > 0
);
}