[英]NHibernate Many-To-One on Joined Subclass with Filter
我有一个类设置,看起来像这样:
public abstract class Parent
{
public virtual bool IsDeleted { get; set; }
}
public class Child : Parent
{
}
public class Other
{
public virtual ICollection<Child> Children { get; set; }
}
Child被映射为Parent的join-subclass。 Childen被映射为多对一包。 这个包有一个名为SoftDeletableFilter的过滤器。 过滤器映射如下所示:
<filter-def name="SoftDeleteableFilter" condition="(IsDeleted = 0 or IsDeleted is null)" />
问题是当加载Other.Children时,过滤器将应用于Child表而不是父表。 有没有办法告诉NHibernate将过滤器应用于父类?
编辑:这是父映射:
<class name="Parent">
<id ..
<property name="IsDeleted" type="System.Boolean">
<column name="IsDeleted" />
</property>
<joined-subclass name="Child">
<key>
<column name="ParentId" />
</key>
...
</joined-subclass>
</class>
终于找到了答案。 也许不是性能最友好的方法,但您可以将过滤条件重写为子查询:
ParentId in (Select p.ParentId from Parent p where p.IsDeleted = false)
感谢CSharper 在用户组的建议
您需要将过滤器添加到父类:
<class name="Parent">
<id ..
<property name="IsDeleted" type="System.Boolean">
<column name="IsDeleted" />
</property>
<joined-subclass name="Child">
<key>
<column name="ParentId" />
</key>
**<filter-def name="SoftDeleteableFilter" condition="(IsDeleted = 0 or IsDeleted is null)" />**
</joined-subclass>
**<filter-def name="SoftDeleteableFilter" condition="(IsDeleted = 0 or IsDeleted is null)" />**
</class>
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