/// <summary>Visit an unbound constrain.</summary>
/// <param name="unboundConstrain">Unbound constrain to be visited.</param>
protected override void VisitUnboundConstrain(UnboundConstrain unboundConstrain)
{
VisitComponent(unboundConstrain.Subject);
_commandText.Append(" ");
VisitComponent(unboundConstrain.Predicate);
_commandText.Append(" ");
VisitComponent(unboundConstrain.Value);
_commandText.Append(" . ");
}
/// <summary>Visits a select clause.</summary>
/// <param name="selectClause">Select clause to be visited.</param>
/// <param name="queryModel">Query model containing given select clause.</param>
public override void VisitSelectClause(SelectClause selectClause, Remotion.Linq.QueryModel queryModel)
{
QuerySourceReferenceExpression querySource = FindQuerySource(selectClause.Selector);
_visitor.VisitExpression(selectClause.Selector);
QueryComponent component = _visitor.RetrieveComponent();
_query = _visitor.Query;
_mainFromComponent = _query.FindAllComponents<StrongEntityAccessor>().Where(item => item.SourceExpression == querySource.ReferencedQuerySource).First();
if (_query.Subject == null)
{
_query.Subject = _mainFromComponent.About;
UnboundConstrain genericConstrain = new UnboundConstrain(new Identifier("s"), new Identifier("p"), new Identifier("o"), _mainFromComponent.SourceExpression.FromExpression);
_mainFromComponent.Elements.Insert(0, genericConstrain);
_query.Select.Add(genericConstrain);
}
_subject = _query.Subject;
queryModel.MainFromClause.Accept(this, queryModel);
_query.Select.Add(_mainFromComponent);
VisitBodyClauses(queryModel.BodyClauses, queryModel);
VisitResultOperators(queryModel.ResultOperators, queryModel);
OverrideSelector(component, selectClause.Selector);
}
/// <summary>Visit an unbound constrain.</summary> /// <param name="unboundConstrain">Unbound constrain to be visited.</param> protected abstract void VisitUnboundConstrain(UnboundConstrain unboundConstrain);
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);
}
}
