protected DtoBase()
{
this.Type = DtoType.GetDtoType(this.GetType());
// walk...
this.Values = new Dictionary <DtoField, DtoValue>();
foreach (var field in this.Type.Fields)
{
if (field is DtoEntityMemberField)
{
this.Values[field] = new DtoStoredValue(field.DefaultValue);
}
else if (field is DtoAdHocField)
{
this.Values[field] = new DtoRedirectedValue((DtoAdHocField)field);
}
else
{
throw new NotSupportedException(string.Format("Cannot handle '{0}'.", field.GetType()));
}
}
// also...
this.Links = new Dictionary <DtoLink, DtoLinkWrapper>();
foreach (var link in this.Type.Links)
{
this.Links[link] = new DtoLinkWrapper();
}
}
public static IDtoCapable GetConcrete(this IDtoBase dto)
{
var type = DtoType.GetDtoType(dto.GetType());
if (dto.IsNew())
{
return(type.CreateConcreteInstance());
}
else
{
// load...
var item = (IDtoCapable)type.ConcreteEntityType.Persistence.GetById(new object[] { dto.Id }, OnNotFound.ReturnNull);
return(item);
}
}
public static IDtoBase ToDto(this IDtoCapable item)
{
var type = DtoType.GetDtoType(item.GetType());
var dto = (IDtoBase)Activator.CreateInstance(type.Type);
// raise...
dto.OnInitializingFromConcrete(item);
// walk...
foreach (var field in type.Fields)
{
if (field.CanGetValueFromConcreteItem)
{
var value = field.GetValueFromConcreteItem(item);
dto[field] = value;
}
}
// end...
dto.OnInitializedFromConcrete(item);
// return...
return(dto);
}
//public static PagedDataResult<T> ToDtos<T>(this IEnumerable<IDtoCapable> items, PagedDataRequest request)
// where T : IDtoBase
//{
// throw new NotImplementedException("This operation has not been implemented.");
//}
public static List <T> ToDtos <T>(this IEnumerable <IDtoCapable> items)
where T : IDtoBase
{
var dtoType = DtoType.InferDtoType(items);
// get...
using (var conn = Database.CreateConnection(dtoType.ConcreteEntityType))
{
conn.BeginTransaction();
try
{
var dtos = new List <T>();
foreach (var item in items)
{
dtos.Add(item.ToDto <T>());
}
// next -- preload any linked data that we can find...
foreach (var link in dtoType.Links)
{
var map = new Dictionary <long, IDtoBase>();
foreach (var dto in dtos)
{
// get...
var parentId = dto.GetValue <long>(link.ReferenceField);
if (parentId != 0 && !(map.ContainsKey(parentId)))
{
map[parentId] = null;
}
}
// load everything up...
var pages = Runtime.Current.GetPages(map.Keys, 500);
foreach (var page in pages)
{
var filter = new SqlFilter(link.Link.ParentEntityType);
var keyField = link.Link.ParentEntityType.GetKeyFields()[0];
filter.Constraints.AddValueListConstraint(keyField, page);
// add...
var gots = filter.ExecuteEntityCollection();
foreach (IDtoCapable got in gots)
{
var id = ConversionHelper.ToInt64(filter.EntityType.Storage.GetValue(got, keyField));
if (map.ContainsKey(id))
{
map[id] = got.ToDto();
}
}
}
// go back and fill them in...
foreach (var dto in dtos)
{
var parentId = dto.GetValue <long>(link.ReferenceField);
if (parentId != 0)
{
dto.SetLink(link, map[parentId]);
}
}
}
// ok...
conn.Commit();
// return...
return(dtos);
}
catch (Exception ex)
{
conn.Rollback();
throw new InvalidOperationException("The operation failed", ex);
}
}
}
public static DtoType GetDtoType(this IDtoBase dto)
{
return(DtoType.GetDtoType(dto.GetType()));
}