LLBLgen 'Unique constraints' not handled well

[robsiera]

Error in regard to template ss_svc_EntityService.lpt
at line 278: foreach(var ucFieldName in uc.FieldsAsString.Split(',')
This line fails if there is a unique constraint defined in LLBLgen.
Exception type: InvalidOperationException: Sequence contains no matching element

LLBLGen Pro version 4.1. Build November 14th, 2013
-----[Core exception]--------------------
at System.Linq.Enumerable.Single[TSource](IEnumerable1 source, Func2 predicate)
at MJC_SS_Svc_EntityServiceTemplate.__ScriptCode()
at SD.LLBLGen.Pro.GeneratorCore.CodeGenerationEngineBase.EmitOutputToFile[TElement](TElement currentElement, String destinationFilename, Boolean failWhenExistent, Assembly compiledTemplatesAssembly, String templateID, Dictionary2 parameters, Boolean isPartOfSet, String outputDescription) at SD.LLBLGen.Pro.GeneratorCore.CodeGenerationEngineBase.EmitOutputForElements[TElement](String destinationFolderFormat, String filenameFormat, Boolean failWhenExistent, String templateID, Assembly compiledTemplatesAssembly, Dictionary2 parameters, ICollection1 elementsToTraverse, EmitType emitTypeUsed, Func2 nameProducerFunc, Func2 fullNameProducerFunc, Func2 elementTypeNameProducerFunc, Func2 groupNameProducerFunc) at SD.LLBLGen.Pro.GeneratorCore.CodeGenerationEngineBase.EmitOutput(Dictionary2 parameters, String destinationFolderFormat, String templateID, Assembly compiledTemplatesAssembly, EmitType emitTypeToPerform, String filenameFormat, Boolean failWhenExistent)
at SD.LLBLGen.Pro.LptParser.DotNetTemplateEngine.Perform(IGenerator executingGenerator, ITask taskDefinition, Dictionary2 parameters) at SD.LLBLGen.Pro.ApplicationCore.CodeGenerationMetaData.Tasks.Task.PerformElement(IGenerator executingGenerator, LogNode parentNode) at SD.LLBLGen.Pro.ApplicationCore.CodeGenerationMetaData.Tasks.TaskGroupElement.Perform(IGenerator executingGenerator, LogNode parentNode) at SD.LLBLGen.Pro.ApplicationCore.CodeGenerationMetaData.Tasks.TaskGroup.PerformElement(IGenerator executingGenerator, LogNode parentNode) at SD.LLBLGen.Pro.ApplicationCore.CodeGenerationMetaData.Tasks.TaskGroupElement.Perform(IGenerator executingGenerator, LogNode parentNode) at SD.LLBLGen.Pro.ApplicationCore.CodeGenerationMetaData.Tasks.TaskGroup.PerformElement(IGenerator executingGenerator, LogNode parentNode) at SD.LLBLGen.Pro.ApplicationCore.CodeGenerationMetaData.Tasks.TaskGroupElement.Perform(IGenerator executingGenerator, LogNode parentNode) at SD.LLBLGen.Pro.ApplicationCore.CodeGenerationMetaData.Tasks.TaskGroup.PerformElement(IGenerator executingGenerator, LogNode parentNode) at SD.LLBLGen.Pro.ApplicationCore.CodeGenerationMetaData.Tasks.TaskGroupElement.Perform(IGenerator executingGenerator, LogNode parentNode) at SD.LLBLGen.Pro.GeneratorCore.Generator.RunTasks(String rootNameSpaceToUse, String destinationRootFolder, String groupName) at SD.LLBLGen.Pro.GeneratorCore.Generator.Start(ITaskGroup tasksToExecute, ApplicationConfiguration configurationSettings, Language languageToUse, Platform platformToUse, List1 templateBindingsToUse, String templateGroupToUse, String rootNameSpaceToUse, String destinationRootFolder, Project projectDefinition, CodeGenerationCycleOutputType outputType)
at SD.LLBLGen.Pro.GeneratorCore.Generator.Start(ITaskGroup tasksToExecute, CodeGenerationCyclePreferences preferences, ApplicationConfiguration configurationSettings, Project projectDefinition)
at SD.LLBLGen.Pro.Gui.Classes.GuiController.PerformRunCodeGenerationCycleAction(ITaskGroup toExecute, CodeGenerationCyclePreferences codeGenerationCyclePreferences, HashSet1 entitiesToUse, HashSet1 spCallsToUse, HashSet1 typedViewsToUse, HashSet1 typedListsToUse, HashSet1 valueTypesToUse, HashSet1 tvfCallsTouse, List`1 vsNetProjectsCreated, LogNode& tasksResultLog)

[mattjcowan]

I'm guessing it's failing somewhere else, on an IEnumerable somewhere... Maybe in one of the following lines? allEntityFields.Single(f=>f.Name==ucFieldName);

Do you have any tables with only discriminators? missing PKs?

My tests generate fine at this point, but maybe I'm missing something (?)