/// <summary>Visit an unspecified entity accessor.</summary> /// <param name="entityAccessor">Unspecified entity accessor to be visited.</param> protected abstract void VisitUnspecifiedEntityAccessor(UnspecifiedEntityAccessor entityAccessor);
/// <summary>Visit an unspecified entity accessor.</summary>
/// <param name="entityAccessor">Unspecified entity accessor to be visited.</param>
protected override void VisitUnspecifiedEntityAccessor(UnspecifiedEntityAccessor entityAccessor)
{
_currentEntityAccessor.Push(entityAccessor);
_commandText.Append("{ ");
VisitStrongEntityAccessor(entityAccessor.EntityAccessor);
_commandText.Append("} UNION { ");
foreach (IQueryComponent component in entityAccessor.Elements)
{
_supressedComponents.Add(component);
}
VisitStrongEntityAccessor(entityAccessor.EntityAccessor);
_supressedComponents.Clear();
_commandText.AppendFormat("GRAPH ?G{0} {{ ", entityAccessor.About.Name);
foreach (QueryElement element in entityAccessor.Elements)
{
VisitComponent(element);
}
_commandText.Append("} ");
_commandText.AppendFormat("GRAPH <{0}> {{ ?G{1} <http://xmlns.com/foaf/0.1/primaryTopic> ", MetaGraphUri, entityAccessor.About.Name);
VisitComponent(entityAccessor.About);
_commandText.Append(" . } } ");
_currentEntityAccessor.Pop();
}
private void OverrideEntitySelector(Identifier identifier)
{
UnboundConstrain genericConstrain = new UnboundConstrain(identifier, new Identifier(identifier.Name + "P"), new Identifier(identifier.Name + "O"), _mainFromComponent.SourceExpression.FromExpression);
_mainFromComponent.Elements.Add(genericConstrain);
_query.Select.Clear();
_query.Select.Add(genericConstrain);
UnspecifiedEntityAccessor entityAccessor = new UnspecifiedEntityAccessor(identifier, _mainFromComponent);
entityAccessor.Elements.Add(genericConstrain);
_query.Select.Add(entityAccessor);
int indexOf = -1;
if ((indexOf = _query.Elements.IndexOf(_mainFromComponent)) != -1)
{
_query.Elements.RemoveAt(indexOf);
_query.Elements.Insert(indexOf, entityAccessor);
}
else
{
_query.Elements.Add(entityAccessor);
}
if (_mainFromComponent.Elements[0] is UnboundConstrain)
{
_mainFromComponent.Elements.RemoveAt(0);
}
}