Question

我正在尝试执行此HQL查询：

"from Order as order join order.Services as services"

但是无论何时我正在使用联接，我都会遇到这个例外：

[QuerySyntaxException: Exception of type 'Antlr.Runtime.NoViableAltException' was thrown. near line 1, column 20]
   NHibernate.Hql.Ast.ANTLR.ErrorCounter.ThrowQueryException() +118
   NHibernate.Hql.Ast.ANTLR.HqlParseEngine.Parse() +490
   NHibernate.Hql.Ast.ANTLR.ASTQueryTranslatorFactory.CreateQueryTranslators(String queryString, String collectionRole, Boolean shallow, IDictionary`2 filters, ISessionFactoryImplementor factory) +89
   NHibernate.Engine.Query.HQLStringQueryPlan.CreateTranslators(String hql, String collectionRole, Boolean shallow, IDictionary`2 enabledFilters, ISessionFactoryImplementor factory) +88
   NHibernate.Engine.Query.HQLStringQueryPlan..ctor(String hql, String collectionRole, Boolean shallow, IDictionary`2 enabledFilters, ISessionFactoryImplementor factory) +71
   NHibernate.Engine.Query.HQLStringQueryPlan..ctor(String hql, Boolean shallow, IDictionary`2 enabledFilters, ISessionFactoryImplementor factory) +50
   NHibernate.Engine.Query.QueryPlanCache.GetHQLQueryPlan(String queryString, Boolean shallow, IDictionary`2 enabledFilters) +241
   NHibernate.Impl.AbstractSessionImpl.GetHQLQueryPlan(String query, Boolean shallow) +179
   NHibernate.Impl.AbstractSessionImpl.CreateQuery(String queryString) +160
   BL.Queue.GetOrders() in c:\Yayasoft\YTour\YTour\BL\Queues\Queue.cs:66
   YTourWeb.Test.Page_Load(Object sender, EventArgs e) in c:\Yayasoft\YTour\YTour\YTourWeb\Test.aspx.cs:16
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +92
   System.Web.UI.Control.LoadRecursive() +54
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772

当我添加连接（任何连接）时，如果我执行选择而没有连接，则会发生这种情况两个实体都已映射，因此尝试连接未映射的属性不是问题任何想法？

Answer 1

在这种情况下，我会说，order这个词被错误地评估为ORDER BY的一部分。尝试使用不同的别名，例如 orderX ：

var hql = "from Order as orderX join orderX.Services as services"

nhibernate 3.3.1.4000 hql join抛出一个antlr异常

1 个答案: