マッピングを設定しているにもかかわらずNot.Nullable()、Not.LazyLoad()
何らかの理由で、NHは2回テーブルに参加しています。1回目はWHEREを緩和するためのINNER JOINで、2回目はデータを選択するためのOUTERJOINです。
確かに、すでにデータを結合しているので、結合されたテーブルを使用するのは理にかなっています...
SELECT
...Tables..
from Tasks taskentity0_,
outer Cases caseentity1_,
outer Grades gradeentit2_,
Cases caseentity5_
WHERE
....
これに対する私のLINQクエリは次のとおりです。
IQueryable<TaskEntity> tasks = TaskRepo.Find(
t => t.DueDate <= DateTime.Now
&& (t.TaskInitials == userInitials || (t.TaskInitials == "" || t.TaskInitials == null))
&& t.Team.GST.Any
(x => x.Initials == userInitials
&& x.WorkType.WorkTypeCode == t.WorkType.WorkTypeCode
&& x.Team.TeamCode == t.Team.TeamCode
)
&& (t.Case.CaseOnHold <= DateTime.Now || t.Case.CaseOnHold == null || (t.SingleTask == "M" || t.SingleTask == "m"))
&& (t.Case.CaseMatter.StartsWith("0") || t.Case.CaseMatter.StartsWith("9"))
).Fetch(t => t.Case,FetchProvider)
私の参照マッピング：
References(x => x.Case).Column("ta_c_ref").Not.Nullable();
考え？
リポジトリパターンを使用しており、このように機能するようにFetch拡張メソッドを再実装しました（したがって、FetchProviderを渡します）。
また、 sQueryOver<T>が必要なため、ここではオプションではありませんIQueryable。
NH3.1を使用しています。
大衆向け：
FetchまたはLINQを使用しなくなり、HQLに移行しました...
/// <summary>
/// Interfaces for Fetch() statements
/// </summary>
public interface IFetchingProvider
{
IFetchRequest<TOriginating, TRelated> Fetch<TOriginating, TRelated>(IQueryable<TOriginating> query, Expression<Func<TOriginating, TRelated>> relatedObjectSelector);
IFetchRequest<TOriginating, TRelated> FetchMany<TOriginating, TRelated>(IQueryable<TOriginating> query, Expression<Func<TOriginating, IEnumerable<TRelated>>> relatedObjectSelector);
IFetchRequest<TQueried, TRelated> ThenFetch<TQueried, TFetch, TRelated>(IFetchRequest<TQueried, TFetch> query, Expression<Func<TFetch, TRelated>> relatedObjectSelector);
IFetchRequest<TQueried, TRelated> ThenFetchMany<TQueried, TFetch, TRelated>(IFetchRequest<TQueried, TFetch> query, Expression<Func<TFetch, IEnumerable<TRelated>>> relatedObjectSelector);
}
public class NhFetchingProvider : IFetchingProvider
{
public IFetchRequest<TOriginating, TRelated> Fetch<TOriginating, TRelated>(IQueryable<TOriginating> query, Expression<Func<TOriginating, TRelated>> relatedObjectSelector)
{
var fetch = EagerFetchingExtensionMethods.Fetch(query, relatedObjectSelector);
return new FetchRequest<TOriginating, TRelated>(fetch);
}
public IFetchRequest<TOriginating, TRelated> FetchMany<TOriginating, TRelated>(IQueryable<TOriginating> query, Expression<Func<TOriginating, IEnumerable<TRelated>>> relatedObjectSelector)
{
var fecth = EagerFetchingExtensionMethods.FetchMany(query, relatedObjectSelector);
return new FetchRequest<TOriginating, TRelated>(fecth);
}
public IFetchRequest<TQueried, TRelated> ThenFetch<TQueried, TFetch, TRelated>(IFetchRequest<TQueried, TFetch> query, Expression<Func<TFetch, TRelated>> relatedObjectSelector)
{
var impl = query as FetchRequest<TQueried, TFetch>;
var fetch = EagerFetchingExtensionMethods.ThenFetch(impl.NhFetchRequest, relatedObjectSelector);
return new FetchRequest<TQueried, TRelated>(fetch);
}
public IFetchRequest<TQueried, TRelated> ThenFetchMany<TQueried, TFetch, TRelated>(IFetchRequest<TQueried, TFetch> query, Expression<Func<TFetch, IEnumerable<TRelated>>> relatedObjectSelector)
{
var impl = query as FetchRequest<TQueried, TFetch>;
var fetch = EagerFetchingExtensionMethods.ThenFetchMany(impl.NhFetchRequest, relatedObjectSelector);
return new FetchRequest<TQueried, TRelated>(fetch);
}
}
public static IFetchRequest<TOriginating, TRelated> Fetch<TOriginating, TRelated>(this IQueryable<TOriginating> query, Expression<Func<TOriginating, TRelated>> relatedObjectSelector, Func<IFetchingProvider> FetchingProvider)
{
return FetchingProvider().Fetch(query, relatedObjectSelector);
}