Lets imagine model entity:

public class User: Entity
  public string Name {get;set;]

and opposite Dto class:

public class UserDto: IDataErrorInfo
  public string _Key {get;set;}
  public string Name {get;set;}

  public string this[string columnName]
        if (columnName == "Name")
           if (string.IsNullOrEmpty(this.Name))
             return "Name cannot be empty!";

        return null;

Now creating mapping builder:

var builder = new Xtensive.ObjectMapping.MappingBuilder()
  .MapType<User, UserDto, string>(entity => entity.Key.Format(), objDto => objDto._Key)
  .IgnoreProperty(objDto => objDto.Error)
  .TrackChanges(dto => dto.ID, false);

And when i trying to create Mapper from this mapping description, it fails on:

The primitive property System.String Item [System.String] in UserDto is bound to the property System.Object Item [System.String] in User that isn't primitive.

I can imagine(maybe wrong) why it throws this, because yours Xtensive.Orm.Entity has also indexer with return type object, not like mine string. My question is, how can i tell to mapping description to ignore indexer ? something like IgnoreProperty but for indexer, maybe IgnoreIndexer or something?

Problem is i need such indexer in UserDto class because its implements IDataErrorInfo which is used on app for validation.

asked May 20 '11 at 15:35

Peter%20%C5%A0ulek's gravatar image

Peter Šulek

edited May 23 '11 at 01:26

Hello Peter,

I'll check this, thanks for the sample.

(May 23 '11 at 06:40) Dmitri Maximov Dmitri%20Maximov's gravatar image

Can you confirm this? I have many Dto classes with indexer and for now i must enclose these parts with #if SILVERILGHT #endif to be not a part of Dto on server side when transform real DO entities to Dto.

(May 24 '11 at 03:07) Peter Šulek Peter%20%C5%A0ulek's gravatar image

One Answer:

Peter, the issue is fixed in 7544 revision. The binaries will be published soon.

answered May 24 '11 at 05:47

Dmitri%20Maximov's gravatar image

Dmitri Maximov

And how will you fix it?Just ignoring indexer?

(May 24 '11 at 05:58) Peter Šulek Peter%20%C5%A0ulek's gravatar image

Right, properties with indexer are skipped.

(May 24 '11 at 06:53) Dmitri Maximov Dmitri%20Maximov's gravatar image

The nightly build is available in the download section.

(May 24 '11 at 10:58) Dmitri Maximov Dmitri%20Maximov's gravatar image

Downloaded, tested, worked. Confirmed that it was fixed. Thanks a lot!

(May 24 '11 at 15:22) Peter Šulek Peter%20%C5%A0ulek's gravatar image

It was a pleasure =)

(May 25 '11 at 02:58) Dmitri Maximov Dmitri%20Maximov's gravatar image
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