重命名NHibernate的标准

重命名NHibernate的标准

本文介绍了重命名NHibernate的标准的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

限时删除!!

我想加盟别名多次,但是这取决于它应该做的次数。

 员工employeeAlias = NULL; 
事情thingAlias = NULL;
变种名称=字符串[] {A,B,C,D,E} //值的数量可以改变
的for(int i = 0;我< names.Length;我++)
{
queryOver
.JoinAlias(()=> employeeAlias.Things,
()=> thingAlias,
JoinType .LeftOuterJoin,
Restrictions.Eq(Projections.Property(()=> thingAlias.Name,
名称由[i]));
}

然而,在执行时,NHibernate的抛出一个错误说:



NHibernate.QueryException:重复别名:thingAlias ---> System.ArgumentException:具有相同键的项已被添加



有没有一种办法可以让NHibernate的加入一个别名与指定的名称,这样就不会再使用该变量的名字吗?



谢谢你们。这一直是。从昨天开始我的问题,我无法找到一个妥善的解决办法。



PS:



我想做这样的事情:

  SELECT * FROM员工Ë
LEFT OUTER JOIN事情T于e.Id = T .EmployeedId和t.Name =A
LEFT OUTER JOIN事情T于e.Id = t.EmployeedId AND t.Name =b


解决方案

你正在尝试实现是不可能的。每个关系(多到一一对许多)可只能使用一次。



要支持这个说法,请点击此处查看:的

 私人无效CreateAssociationPathCriteriaMap()
{
的foreach(CriteriaImpl.Subcriteria暴击rootCriteria.IterateSubcriteria())
{
串wholeAssociationPath = GetWholeAssociationPath(暴击);

{
associationPathCriteriaMap.Add(wholeAssociationPath,暴击);
}
赶上(ArgumentException的AE)
{
抛出新QueryException(重复协会路径:
+ wholeAssociationPath,AE);
}



所以,我们可以在这里看到,无论别名,到了最后,所有associtated关系(连接)加入到 associationPathCriteriaMap ,这是的IDictionary<字符串的ICriteria>



这意味着,现在有办法了如何在比赛中两个相同的键...


I am trying to join aliases multiple times but it depends on the number of times it should do it.

Employee employeeAlias = null;
Thing thingAlias = null;
var names = string[] {"A", "B", "C", "D", "E"} // number of values could vary
for(int i = 0; i < names.Length ; i++)
{
   queryOver
       .JoinAlias(() => employeeAlias.Things,
                  () => thingAlias,
                  JoinType.LeftOuterJoin,
                  Restrictions.Eq(Projections.Property(() => thingAlias.Name,
                                  names[i]));
}

However, upon execution, NHibernate throws an error saying:

NHibernate.QueryException: duplicate alias: thingAlias ---> System.ArgumentException: An item with the same key has already been added

Is there a way I can make NHibernate join an alias with a specified name so that it will not re-use the name of the variable?

Thanks guys. This has been my problem since yesterday and I can't find a proper solution.

PS:

I'm trying to do something like this:

SELECT * FROM Employee e
LEFT OUTER JOIN Thing t on e.Id = t.EmployeedId AND t.Name = "A"
LEFT OUTER JOIN Thing t on e.Id = t.EmployeedId AND t.Name = "B"
解决方案

What you are trying to achieve is impossible. Each relation (many-to-one, one-to-many) can be used exactly once.

To support this statement, please, check it here: CriteriaQueryTranslator.cs

private void CreateAssociationPathCriteriaMap()
{
    foreach (CriteriaImpl.Subcriteria crit in rootCriteria.IterateSubcriteria())
    {
        string wholeAssociationPath = GetWholeAssociationPath(crit);
        try
        {
            associationPathCriteriaMap.Add(wholeAssociationPath, crit);
        }
        catch (ArgumentException ae)
        {
            throw new QueryException("duplicate association path: "
                                    + wholeAssociationPath, ae);
        }

So, what we can see here, regardless of aliases, at the end, all associtated relations (JOINS) are added into associationPathCriteriaMap, which is IDictionary<string, ICriteria>.

That means, that there is now way how to have two same keys in play...

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1403页,肝出来的..

09-06 10:24