【发布时间】：2015-01-24 10:53:40
【问题描述】：
使用 Orchard.Projections 模块，无法搜索 Unicode 文本。例如，结果查询是Select ... From ... Where ... Col Like '%term%'，但我们期望Select ... From ... Where ... Col Like N'%term%'（N 包含在Like 之后）。在代码中查找它，我们在 Orchard.ContentManagement.HqlRestrictions 中找到 public static BinaryExpression Like()。通过添加 N 并将 value = "'%" + FormatValue(value, false) + "%'"; 更改为 value = "N'%" + FormatValue(value, false) + "%'";，我们会收到此错误：
NHibernate.Hql.Ast.ANTLR.QuerySyntaxException was caught
HResult=-2146232832
Message=Exception of type 'Antlr.Runtime.MismatchedTokenException' was thrown. near line 9, column 61
Source=NHibernate
StackTrace:
at NHibernate.Hql.Ast.ANTLR.ErrorCounter.ThrowQueryException() in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Hql\Ast\ANTLR\ErrorCounter.cs:line 73
at NHibernate.Hql.Ast.ANTLR.HqlParseEngine.Parse() in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Hql\Ast\ANTLR\QueryTranslatorImpl.cs:line 479
at NHibernate.Hql.Ast.ANTLR.ASTQueryTranslatorFactory.CreateQueryTranslators(String queryString, String collectionRole, Boolean shallow, IDictionary`2 filters, ISessionFactoryImplementor factory) in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Hql\Ast\ANTLR\ASTQueryTranslatorFactory.cs:line 19
at NHibernate.Engine.Query.HQLStringQueryPlan.CreateTranslators(String hql, String collectionRole, Boolean shallow, IDictionary`2 enabledFilters, ISessionFactoryImplementor factory) in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Engine\Query\HQLStringQueryPlan.cs:line 24
at NHibernate.Engine.Query.HQLStringQueryPlan..ctor(String hql, String collectionRole, Boolean shallow, IDictionary`2 enabledFilters, ISessionFactoryImplementor factory) in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Engine\Query\HQLStringQueryPlan.cs:line 16
at NHibernate.Engine.Query.HQLStringQueryPlan..ctor(String hql, Boolean shallow, IDictionary`2 enabledFilters, ISessionFactoryImplementor factory) in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Engine\Query\HQLStringQueryPlan.cs:line 14
at NHibernate.Engine.Query.QueryPlanCache.GetHQLQueryPlan(String queryString, Boolean shallow, IDictionary`2 enabledFilters) in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Engine\Query\QueryPlanCache.cs:line 62
at NHibernate.Impl.AbstractSessionImpl.GetHQLQueryPlan(String query, Boolean shallow) in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Impl\AbstractSessionImpl.cs:line 310
at NHibernate.Impl.AbstractSessionImpl.CreateQuery(String queryString) in c:\Users\sebros\Documents\My Projects\nhibernate-core\src\NHibernate\Impl\AbstractSessionImpl.cs:line 289
at Orchard.ContentManagement.DefaultHqlQuery.Slice(Int32 skip, Int32 count) in d:\Projects\...\src\Orchard\ContentManagement\DefaultHqlQuery.cs:line 188
at Orchard.Projections.Services.ProjectionManager.GetContentItems(Int32 queryId, Int32 skip, Int32 count)
at Orchard.Projections.Drivers.ProjectionPartDriver.<>c__DisplayClass2e.<Display>b__1e(Object shape)
at Orchard.ContentManagement.Drivers.ContentPartDriver`1.<>c__DisplayClass12.<ContentShape>b__11(BuildShapeContext ctx) in d:\Projects\...\src\Orchard\ContentManagement\Drivers\ContentPartDriver.cs:line 135
at Orchard.ContentManagement.Drivers.ContentPartDriver`1.<>c__DisplayClass15.<ContentShapeImplementation>b__14(BuildShapeContext ctx) in d:\Projects\...\src\Orchard\ContentManagement\Drivers\ContentPartDriver.cs:line 140
at Orchard.ContentManagement.Drivers.ContentShapeResult.ApplyImplementation(BuildShapeContext context, String displayType) in d:\Projects\...\src\Orchard\ContentManagement\Drivers\ContentShapeResult.cs:line 45
at Orchard.ContentManagement.Drivers.ContentShapeResult.Apply(BuildDisplayContext context) in d:\Projects\...\src\Orchard\ContentManagement\Drivers\ContentShapeResult.cs:line 21
at Orchard.ContentManagement.Drivers.CombinedResult.Apply(BuildDisplayContext context) in d:\Projects\...\src\Orchard\ContentManagement\Drivers\CombinedResult.cs:line 28
at Orchard.ContentManagement.Drivers.Coordinators.ContentPartDriverCoordinator.<>c__DisplayClassa.<BuildDisplay>b__9(IContentPartDriver driver) in d:\Projects\...\src\Orchard\ContentManagement\Drivers\Coordinators\ContentPartDriverCoordinator.cs:line 49
at Orchard.InvokeExtensions.Invoke[TEvents](IEnumerable`1 events, Action`1 dispatch, ILogger logger) in d:\Projects\...\src\Orchard\InvokeExtensions.cs:line 17
InnerException:
第 9 行，第 61 列表示“N”的位置。
有什么想法吗？ 我们如何使用这个模块在不更改数据库排序规则的情况下搜索 unicode 文本？
果园版本是1.8.1
【问题讨论】：
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只是...脱离原生 NHibernate 的 包装器... NHibernate 中的原生 HQL 确实支持参数
var hql="FROM Entity e WHERE e.Property Like :value";和通过使用 unicode 方法设置值：.SetString("value", unicodeValue);- 生成的 SQL 完全按预期工作... -
@BertrandLeRoy，我已经发布了一个讨论，orchard.codeplex.com/discussions/578488。是否可以将线程移动到问题中？顺便问一下，有什么快速的解决方案吗？我们可能无法等待下一个版本。谢谢
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或许能解决你的问题stackoverflow.com/questions/447566/…
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CTRL+A, CTRL+C, CTRL+V ;) 如果您无法自行修复或等待修复，我可以看到的解决方法是从投影切换到直接 HQL 查询。我有一系列帖子可以帮助您入门：weblogs.asp.net/bleroy/Tags/NHibernate
标签： nhibernate unicode orchardcms