Hi,

I want to rename a Field of a Structure, but I can't find the right upgrader hint to do it. I have tried the following hint :

hints.Add(new RenameFieldHint(typeof(MyEntity), "MyStructure.Name", "MyStructure.NewName"));

The hint is accepted by validateRenameFieldHints method and goes to the upgrader phase where i have the following exception (note the hint is not listed in Schema hints but the 'new RenameFieldHint' has been executed, I have double checked that by changing the name of a the 2nd argument in call of RenameFieldHint to a random property name and i do get the validateRenameFieldHints exception):

Xtensive.Orm.SchemaSynchronizationException: Extracted schema is not equal to the target schema. Details:
Schema comparison result: NotEqual
Has unsafe actions: true
Has column type changes: false
Compatible in ValidateLegacy mode: unknown

Unsafe actions:
  RemoveNode, Path=Tables/MyEntity/Columns/MyStructure.Name
Schema hints:

Schema difference:
  "./" != "./" (NodeDifference): Unknown
    +Tables: "./Tables (4)" != "./Tables (4)" (NodeCollectionDifference): 1 change(s)
      "./Tables/MyEntity" != "./Tables/MyEntity" (NodeDifference): Unknown
        +Columns: "./Tables/MyEntity/Columns (2)" != "./Tables/MyEntity/Columns (2)" (NodeCollectionDifference): 2 change(s)
          "./Tables/MyEntity/Columns/MyStructure.Name" != "" (NodeDifference): Removed
            +Type: "Type: String?, Length: 4000, Native type: VarChar(4000)" != "" (ValueDifference): values differ
          "" != "./Tables/MyEntity/Columns/MyStructure.NewName" (NodeDifference): Created
            +Type: "" != "Type: String?, Length: 4000, Native type: VarChar(4000)" (ValueDifference): values differ
   à Xtensive.Orm.Upgrade.UpgradingDomainBuilder.SynchronizeSchema(Domain domain, SchemaUpgrader upgrader, SchemaExtractor extractor, SchemaUpgradeMode schemaUpgradeMode)

Sample used:

  public class MyStructure : Structure
  {
    [Field]
    public string NewName { get; set; }
  }

  [Serializable]
  [HierarchyRoot]
  public class MyEntity : Entity
  {
    [Field, Key]
    public int Id { get; private set; }

    [Field]
    public MyStructure MyStructure { get; set; }

    public MyEntity(Session session): base(session)
    {
    }
  }

Is this possible to do ? What would be the right syntax ? Shall i upgrade the column names in raw sql ?

Benoit