У меня есть запросNHibernate JoinQueryOver и Ленивый Loading
var query = _session.QueryOver<TEntity>().JoinQueryOver<PropertyMultTable>(p => p.Properties).Where(propertyPredicate).List();
этот запрос создаст следующий SQL
select this_.BaseEntity_id as BaseId0_1_ ,
this_1_.Label as Label0_1_ ,
this_1_.Description as Descript3_0_1_ ,
this_1_.CreatedDate as CreatedD4_0_1_ ,
this_.Width as Width2_1_ ,
this_.Height as Height2_1_ ,
this_.Duration as Duration2_1_ ,
propertymu1_.id as id4_0_ ,
propertymu1_.Name as Name4_0_ ,
propertymu1_1_.DateTimeValue as DateTime2_5_0_ ,
propertymu1_2_.IntegerValue as IntegerV2_6_0_ ,
propertymu1_3_.DecimalValue as DecimalV2_7_0_ ,
propertymu1_4_.StringValue as StringVa2_8_0_
from [Video] this_
inner join [BaseEntity] this_1_ on this_.BaseEntity_id = this_1_.BaseId
inner join [PropertyMultTable] propertymu1_ on this_.BaseEntity_id = propertymu1_.BaseEntity_id
left outer join DateTimeValues propertymu1_1_ on propertymu1_.id = propertymu1_1_.PropertyMultTable_id
left outer join IntegerValues propertymu1_2_ on propertymu1_.id = propertymu1_2_.PropertyMultTable_id
left outer join DecimalValues propertymu1_3_ on propertymu1_.id = propertymu1_3_.PropertyMultTable_id
left outer join StringValues propertymu1_4_ on propertymu1_.id = propertymu1_4_.PropertyMultTable_id
where (propertymu1_2_.IntegerValue >= 459144
and propertymu1_2_.IntegerValue <= 691982
)
, но я хочу, чтобы получить только лицо, без свойств. Таким образом, мне нужно SQL, как это:
select this_.BaseEntity_id as BaseId0_1_ ,
this_1_.Label as Label0_1_ ,
this_1_.Description as Descript3_0_1_ ,
this_1_.CreatedDate as CreatedD4_0_1_ ,
this_.Width as Width2_1_ ,
this_.Height as Height2_1_ ,
this_.Duration as Duration2_1_
from [Video] this_
inner join [BaseEntity] this_1_ on this_.BaseEntity_id = this_1_.BaseId
inner join [PropertyMultTable] propertymu1_ on this_.BaseEntity_id = propertymu1_.BaseEntity_id
left outer join DateTimeValues propertymu1_1_ on propertymu1_.id = propertymu1_1_.PropertyMultTable_id
left outer join IntegerValues propertymu1_2_ on propertymu1_.id = propertymu1_2_.PropertyMultTable_id
left outer join DecimalValues propertymu1_3_ on propertymu1_.id = propertymu1_3_.PropertyMultTable_id
left outer join StringValues propertymu1_4_ on propertymu1_.id = propertymu1_4_.PropertyMultTable_id
where (propertymu1_2_.IntegerValue >= 459144
and propertymu1_2_.IntegerValue <= 691982
)
или даже намного лучше, как это:
select distinct this_.BaseEntity_id as BaseId0_1_ ,
this_1_.Label as Label0_1_ ,
this_1_.Description as Descript3_0_1_ ,
this_1_.CreatedDate as CreatedD4_0_1_ ,
this_.Width as Width2_1_ ,
this_.Height as Height2_1_ ,
this_.Duration as Duration2_1_
from [Video] this_
inner join [BaseEntity] this_1_ on this_.BaseEntity_id = this_1_.BaseId
inner join [PropertyMultTable] propertymu1_ on this_.BaseEntity_id = propertymu1_.BaseEntity_id
left outer join IntegerValues propertymu1_2_ on propertymu1_.id = propertymu1_2_.PropertyMultTable_id
where (propertymu1_2_.IntegerValue >= 459144
and propertymu1_2_.IntegerValue <= 691982
)
Могу ли я сделать это с Fluent NHibernate? Спасибо за ответы.
Вы можете добавить класс декларацию видео? – Baz1nga
Видео - это класс с 3 свойствами Ширина, Высота и Длительность, и он получен из BaseEntity, который содержит только свойства: Id, Label, Description and CreatedDate – msi
Fluent NHibernate используется для создания сопоставлений, а не для создания запросов , –