我有一个像这样的简单类
[ActiveRecord("Subscriptions")]
public class Subscription : ActiveRecordBase<Subscription>
{
public Subscription()
{
}
public Subscription(string name)
{
this.Name = name;
}
[PrimaryKey(PrimaryKeyType.Native)]
private int Id { get; set; }
[Property]
public string Name { get; set; }
}
我想使用从基类继承的FindOne()方法进行简单查找。看起来它使用NHibernate.Criterion.DetachedCriteria,但我找不到任何例子。
答案 0 :(得分:2)
你也可以使用LINQ,我发现LINQ语法更具可读性:
// find the subscription with id = 3
var subscription = Castle.ActiveRecord.Framework.ActiveRecordLinqBase<Subscription>.Queryable.SingleOrDefault(s => s.Id == 3);
// find all the active subscriptions
var activeSubscriptions = ActiveRecordLinqBase<Subscription>.Queryable.Where(s => s.IsActive);
如果您的类继承自ActiveRecordLinqBase,您只需编写:
// find the subscription with id = 3
var subscription = Subscription.Queryable.SingleOrDefault(s => s.Id == 3);
// find all the active subscriptions
var activeSubscriptions = Subscription.Queryable.Where(s => s.IsActive);
答案 1 :(得分:1)
它不是很复杂:
Subscription.FindOne(NHibernate.Criterion.Expression.Eq("Id",3))
使用Expression-class,你可以拥有构建sql / hql / select所需的所有东西,你只需要反复嵌套它。
Subscription.FindOne(Expression.And(Expression.Eq(...),Expression.Eq(...)))
问候 Juy Juka