hqlクエリで大量のデータを取り込む

Question

以下のクエリでは、要求された日付範囲内にある割り当てを持つEmployeeオブジェクトが返されます。

クエリはすべての割り当てを返します。また、データベースに3つのクエリを実行していますが、わかりません（第3のバッチサイズはアクティビティ科目に100というバッチサイズがあるためです）。

要求された期間の割り当てだけを効率的に返すようにこのクエリを変更するにはどうすればよいですか？

乾杯、
Berryl

DATABASE SQL文：

NHibernate: select resource0_.ResourceId as ResourceId0_, resource0_.BusinessId as BusinessId0_, resource0_.ResourceName as Resource4_0_, resource0_.OwnerName as OwnerName0_, resource0_.EmployeeNumber as Employee6_0_, resource0_.FirstName as FirstName0_, resource0_.LastName as LastName0_, resource0_.DepartmentId as Departme9_0_, resource0_.ResourceType as Resource2_0_ from Resources resource0_ 
inner join Allocations allocation1_ on resource0_.ResourceId=allocation1_.ResourceId 
where resource0_.BusinessId=@p0 
and (allocation1_.StartTime between @p1 and @p2);@p0 = '000001' [Type: String (0)], @p1 = 12/27/2010 12:00:00 AM [Type: DateTime (0)], @p2 = 1/2/2011 11:59:59 PM [Type: DateTime (0)] 

NHibernate: SELECT allocation0_.ResourceId as ResourceId1_, allocation0_.AllocationId as Allocati1_1_, allocation0_.AllocationId as Allocati1_2_0_, allocation0_.ActivitySubjectId as Activity2_2_0_, allocation0_.ResourceId as ResourceId2_0_, allocation0_.StartTime as StartTime2_0_, allocation0_.EndTime as EndTime2_0_, allocation0_.PostingTime as PostingT6_2_0_ 
FROM Allocations allocation0_ WHERE allocation0_.ResourceId=@p0;@p0 = 98304 [Type: Int32 (0)] 

NHibernate: SELECT activitysu0_.ActivitySubjectId as Activity1_3_0_, activitysu0_.BusinessId as BusinessId3_0_, activitysu0_.Description as Descript4_3_0_, activitysu0_.ActivitySubjectType as Activity2_3_0_ 
FROM ActivitySubjects activitysu0_ WHERE activitysu0_.ActivitySubjectId in (@p0, @p1, @p2, @p3);@p0 = 32784 [Type: Int32 (0)], @p1 = 32854 [Type: Int32 (0)], @p2 = 32860 [Type: Int32 (0)], @p3 = 32861 [Type: Int32 (0)] 

HQL QUERY

public Resource GetResourceForDateRange<T>(string businessId, DateRange period) where T : Resource 
    { 
     Check.RequireStringValue(businessId, "businessId"); 
     Check.RequireNotNull(period); 

     const string hql = 
      @" 
           select r 
           from Resource r 
           inner join r.Allocations as a 
           where r.BusinessId = :businessId 
           and a.TimeRange.StartTime between :periodStart and :periodEnd"; 

     return _session.CreateQuery(hql) 
      .SetString("businessId", businessId) 
      .SetDateTime("periodStart", period.Start) 
      .SetDateTime("periodEnd", period.End) 
      .UniqueResult<Resource>(); 

    } 

MAPPING

<id name="Id" type="System.Int32" unsaved-value="0"> 
    <column name="ResourceId" /> 
    <generator class="hilo" /> 
</id> 

<discriminator column="ResourceType" type="System.String" /> 

<property name="BusinessId" length="50" not-null="true" unique="true" unique-key="DomainSignature" index="ResourceDomainSignature" /> 
<property name="ResourceName" length="75" not-null="true" /> 
<property name="OwnerName" length="75" not-null="true" /> 

<set access="field.camelcase-underscore" cascade="all-delete-orphan" inverse="true" name="Allocations"> 
    <key foreign-key="Allocations_Resource_FK"> 
    <column name="ResourceId" /> 
    </key> 
    <one-to-many class="Allocations.Allocation" /> 
</set> 

<subclass name="Resources.HumanResources.Employee" discriminator-value="EMPLOYEE"> 
    ... 
</subclass> 

Answer 1

3つのクエリを実行する理由は、遅延ロードがオフになっている可能性が高いためです。したがって、エンティティリソースに関連付けられているすべてのオブジェクトがロードされています。これがすべての割り当てを取得している理由です。

は、クラスのフェッチ参加

from Resource r 
left join fetch r.Allocations as a 
where r.BusinessId = :businessId 
and a.TimeRange.StartTime between :periodStart and :periodEnd