![](/img/trans.png)
[英]How can I use my abstract base class in a One to Many in a TPH using Fluent NHibernate automapping?
[英]Fluent NHibernate how to override mappings for an abstract base class
我想對所有Types Of AuditedEntity
都執行此Types Of AuditedEntity
,但是正如我們告訴FH忽略基本摘要一樣,代碼不會受到攻擊。 我不想對我的所有實體執行此操作,然后在添加新的typeof<AuditedEntity>
時讓某人忘記
public abstract class AuditedEntity : Entity ...
public class AuditedEntityMappings : IAutoMappingOverride<AuditedEntity>
{
public void Override(AutoMapping<AuditedEntity> mapping)
{
mapping.Where("DeletedById is null");
}
}
這篇文章看起來很有希望,但該方法已被棄用
得益於對某些合理復雜表達式的幫助,該表達式導致以下擴展:
var model =
AutoMap.AssemblyOf<AuditedEntity>(new AutomappingConfiguration(databaseName))
.HideDeletedEntities();
...
public static class ReflectiveEnumerator
{
public static IEnumerable<Type> GetSubTypesOf<T>() where T : class
{
return Assembly.GetAssembly(typeof (T)).GetTypes()
.Where(myType => myType.IsClass &&
!myType.IsAbstract &&
myType.IsSubclassOf(typeof (T)));
}
}
public static class AutoPersistenceModelExtensions
{
public static AutoPersistenceModel HideDeletedEntities(this AutoPersistenceModel model)
{
var types = ReflectiveEnumerator.GetSubTypesOf<AuditedEntity>();
foreach (var t in types)
{
var mapped = typeof(AutoMapping<>).MakeGenericType(t);
var p = Expression.Parameter(mapped, "m");
var expression = Expression.Lambda(Expression.GetActionType(mapped),
Expression.Call(p, mapped.GetMethod("Where"),
Expression.Constant("DeletedById is null")), p);
typeof(AutoPersistenceModel).GetMethod("Override").MakeGenericMethod(t)
.Invoke(model, new object[] { expression.Compile() });
}
return model;
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.