/// <summary>Visit an optional patterns.</summary> /// <param name="optionalPattern">Optional patterns to be visited.</param> protected abstract void VisitOptionalPattern(OptionalPattern optionalPattern);
/// <summary>Visit an optional patterns.</summary>
/// <param name="optionalPattern">Optional patterns accessor to be visited.</param>
protected override void VisitOptionalPattern(OptionalPattern optionalPattern)
{
_commandText.Append("OPTIONAL { ");
foreach (EntityConstrain pattern in optionalPattern.Patterns)
{
VisitComponent(pattern);
}
_commandText.Append(" } ");
}
private void VisitAnyResultOperator(AnyResultOperator anyResultOperator, Remotion.Linq.QueryModel queryModel, int index)
{
string targetIdentifierString = _visitor.Query.CreateIdentifier(_visitor.ItemNameOverride);
IList<EntityConstrain> entityConstrains = null;
StrongEntityAccessor entityAccessor = (from accessor in _visitor.Query.GetQueryComponentNavigator().FindAllComponents<StrongEntityAccessor>()
let constrains = accessor.Elements.OfType<EntityConstrain>()
from constrain in constrains
let predicate = constrain.Predicate as Literal
where predicate != null
let predicateUri = (Uri)predicate.Value
let identifier = constrain.Value as Identifier
where identifier != null
let identifierString = _visitor.Query.RetrieveIdentifier(identifier.Name)
where identifierString == targetIdentifierString
where (entityConstrains = constrains.Where(item =>
(item.Predicate is Literal) && (((Uri)((Literal)item.Predicate).Value).AbsoluteUri == predicateUri.AbsoluteUri)).ToList()).Count > 0
select accessor).FirstOrDefault();
if (entityAccessor != null)
{
foreach (EntityConstrain entityConstrain in entityConstrains)
{
int indexOf = entityAccessor.Elements.IndexOf(entityConstrain);
entityAccessor.Elements.RemoveAt(indexOf);
OptionalPattern optional = new OptionalPattern();
optional.Patterns.Add(entityConstrain);
entityAccessor.Elements.Insert(indexOf, optional);
}
}
Call call = new Call(MethodNames.Bound);
_result = call;
}