internal override int SaveValueToDb(ref object value, ref object exValue)
{
if (!this.IsAssigned)
{
throw new DataException("Попытка записать в БД неприсвоенное значение.");
}
MetadataAssociationRefList refs = this.Metadata.Association.Refs;
DataObject dataObject = (DataObject)base.GetValue();
if (dataObject != null && !dataObject.IsNull)
{
value = (object)dataObject.Id.ToString();
if (this.Metadata.Association.Selector != null)
{
exValue = InDbUtils.Convert((object)refs.Need(dataObject.Class).SelectorValue, this.Metadata.Association.Selector.DataType);
}
}
return(this.Metadata.Association.Selector != null ? 2 : 1);
}
public SqlUtils.NavigationStep EnsureRootStep(string path)
{
SqlUtils.NavigationStep navigationStep1 = !string.IsNullOrEmpty(path) ? this.FindRootStep(path) : throw new ArgumentNullException(nameof(path));
if (navigationStep1 != null)
{
return(navigationStep1);
}
string predecessorPath;
string identifier;
MetadataClass refClass1;
bool isExternalRef;
SqlUtils.Navigation.ParseLastPartOfPath(this.Class.Metadata.Classes, path, out predecessorPath, out identifier, out refClass1, out isExternalRef);
SqlUtils.NavigationStep predecessor = !string.IsNullOrEmpty(predecessorPath) ? this.EnsureRootStep(predecessorPath) : (SqlUtils.NavigationStep)null;
MetadataClass refClass2 = predecessor != null ? predecessor.TargetClass : this.Class;
SqlUtils.NavigationStep navigationStep2;
if (isExternalRef)
{
MetadataProperty metadataProperty = refClass1.Properties.Need(identifier);
if (!metadataProperty.IsLink)
{
throw new Exception(string.Format("Свойство \"{0}.{1}\" не является отношением.", (object)refClass1.Name, (object)identifier));
}
navigationStep2 = (SqlUtils.NavigationStep) new SqlUtils.ExternalAssociationNavigationStep(this, predecessor, path, metadataProperty.Association.Refs.Need(refClass2));
}
else
{
MetadataProperty property;
MetadataChildRef childRef;
refClass2.NeedMember(identifier, out property, out childRef);
if (property != null)
{
if (!property.IsLink)
{
throw new DataException(string.Format("\"{0}\" не является ассоциацией или дочерним объектом.", (object)identifier));
}
MetadataAssociationRefList refs = property.Association.Refs;
if (refClass1 == null && refs.Count != 1)
{
throw new DataException(string.Format("\"{0}\" является ассоциацией с вариантами связи. В тексте запроса такое поле следует указывать в форме \"имя-свойства:имя-связанного-класса\" (например, \"Subject:Person\").", (object)identifier));
}
navigationStep2 = (SqlUtils.NavigationStep) new SqlUtils.AssociationNavigationStep(this, predecessor, path, refClass1 == null ? refs[0] : refs.Need(refClass1));
}
else
{
navigationStep2 = (SqlUtils.NavigationStep) new SqlUtils.ChildNavigationStep(this, predecessor, path, childRef);
}
}
navigationStep2.TargetAlias = this.CreateUniqueAlias(navigationStep2.TargetClass.DataTable);
this.RootSteps.Add(navigationStep2);
return(navigationStep2);
}