private SaveMap BeforeSaveEntities(SaveMap saveMap)
{
// Only save selected DTO types
var badType = saveMap.Keys
.FirstOrDefault(k => k != typeof(Customer) && k != typeof(Product));
if (badType != null)
{
throw new InvalidOperationException("Cannot save changes to type " + badType.Name);
}
// Need a new NorthwindDtoRepository for reading;
// Can't use the existing one during a save because for unknown reason
// EF DbContext crashes with nullref exception.
var readRepo = new NorthwindDtoRepository {
UserSessionId = UserSessionId
};
_customerMapper = new CustomerMapper(readRepo);
_productMapper = new ProductMapper();
// convert DTO types to corresponding server types
saveMap.ConvertBeforeSaveMap(
_contextProvider.CreateEntityInfo, _entitySaveGuard.BeforeSaveEntity,
_customerMapper, _productMapper);
// Now ready to apply server model validation
_entitySaveGuard.BeforeSaveEntities(saveMap);
return(saveMap);
}
public CustomerMapper(NorthwindDtoRepository repo)
{
this.repo = repo;
}
