Hello,

I got an exception on Domain.Build() (perform) with DO 4.3 latest release : this is a normal exception I had something wrong in my model (duplicated field)

[Field]
public string MyField 
{
  get { return myField; }
}

[Field]
private string myField {get;set;}

Obviously the first [Field] attribute is a mistake.

However the exception should have been more informative:

System.ArgumentException occurred
  Message=An item with the same key has already been added.
  Source=mscorlib
  StackTrace:
       at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
       at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
       at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
       at Xtensive.Sql.Model.NodeCollection`1.Add(TNode item)
       at Xtensive.Sql.Model.PairedNodeCollection`2.Add(TNode item)
       at Xtensive.Sql.Model.TableColumn.ChangeDataTable(DataTable value)
       at Xtensive.Sql.Model.DataTableNode.set_DataTable(DataTable value)
       at Xtensive.Sql.Model.DataTableNode..ctor(DataTable dataTable, String name)
       at Xtensive.Sql.Model.DataTableColumn..ctor(DataTable dataTable, String name)
       at Xtensive.Sql.Model.TableColumn..ctor(Table table, String name, SqlValueType dataType)
       at Xtensive.Sql.Model.Table.CreateColumn(String name, SqlValueType dataType)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.CreateColumn(ColumnInfo columnInfo, Table table)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitCreateColumnAction(CreateNodeAction createColumnAction)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitCreateAction(CreateNodeAction action)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitAction(NodeAction action)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitAction(NodeAction action)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitAction(NodeAction action)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitAction(NodeAction action)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitAction(NodeAction action)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitAction(NodeAction action)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.VisitAction(NodeAction action)
       at Xtensive.Storage.Providers.Sql.SqlActionTranslator.Translate()
       at Xtensive.Storage.Providers.Sql.SchemaUpgradeHandler.UpgradeSchema(ActionSequence upgradeActions, StorageInfo sourceSchema, StorageInfo targetSchema)
       at Xtensive.Storage.Building.Builders.DomainBuilder.SynchronizeSchema(SchemaUpgradeMode schemaUpgradeMode)
       at Xtensive.Storage.Building.Builders.DomainBuilder.BuildDomain(DomainConfiguration configuration, DomainBuilderConfiguration builderConfiguration)
       at Xtensive.Storage.Upgrade.UpgradingDomainBuilder.BuildStageDomain(UpgradeStage stage)
       at Xtensive.Storage.Upgrade.UpgradingDomainBuilder.Build(DomainConfiguration configuration)
       at Xtensive.Storage.Domain.Build(DomainConfiguration configuration)

Could you add an informative message for this one (or possibly a generic message for this part of code) mentioning the offending table/column/... ?

Thanks, Julien

Updated at 21.07.2010 9:58:44

To tony:

An trick in that case is to double-click in "Stack trace" to the methods on top of stack trace and use the "Locals" window in visual studio, which allow to see the local variables where the exception is thrown.

That's how I found where the problem was.

[attachment=0:1257vwhs]debug.png[/attachment:1257vwhs]

Updated at 26.07.2010 14:00:17

Another case of vague exception message:

Xtensive.Storage.DomainBuilderException occurred
  Message=Unsupported type: 'DataSet'.
  Source=Xtensive.Storage
  StackTrace:
       at Xtensive.Storage.Building.Validator.ValidateFieldType(TypeDef declaringType, Type fieldType, Boolean isKeyField)
       at Xtensive.Storage.Building.ModelInspector.InspectField(TypeDef typeDef, FieldDef fieldDef, Boolean isKeyField)
       at Xtensive.Storage.Building.ModelInspector.Inspect(TypeDef typeDef)
       at Xtensive.Storage.Building.ModelInspector.InspectTypes()
       at Xtensive.Storage.Building.ModelInspector.Run()
       at Xtensive.Storage.Building.Builders.ModelBuilder.Run()
       at Xtensive.Storage.Building.Builders.DomainBuilder.BuildModel()
       at Xtensive.Storage.Building.Builders.DomainBuilder.BuildDomain(DomainConfiguration configuration, DomainBuilderConfiguration builderConfiguration)
       at Xtensive.Storage.Upgrade.UpgradingDomainBuilder.BuildStageDomain(UpgradeStage stage)
       at Xtensive.Storage.Upgrade.UpgradingDomainBuilder.Build(DomainConfiguration configuration)
       at Xtensive.Storage.Domain.Build(DomainConfiguration configuration)

Could you give type and property in expression message?

This would be really more practical.

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