/// <summary>
/// Accepts the specified visitor by calling its <see cref="IQueryModelVisitor.VisitOrdering"/> method.
/// </summary>
/// <param name="visitor">The visitor to accept.</param>
/// <param name="queryModel">The query model in whose context this clause is visited.</param>
/// <param name="orderByClause">The <see cref="OrderByClause"/> in whose context this item is visited.</param>
/// <param name="index">The index of this item in the <paramref name="orderByClause"/>'s <see cref="OrderByClause.Orderings"/> collection.</param>
public virtual void Accept (IQueryModelVisitor visitor, QueryModel queryModel, OrderByClause orderByClause, int index)
{
ArgumentUtility.CheckNotNull ("visitor", visitor);
ArgumentUtility.CheckNotNull ("queryModel", queryModel);
ArgumentUtility.CheckNotNull ("orderByClause", orderByClause);
visitor.VisitOrdering (this, queryModel, orderByClause, index);
}
protected override QueryModel ApplyNodeSpecificSemantics (QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
ArgumentUtility.CheckNotNull ("queryModel", queryModel);
var clause = new OrderByClause();
clause.Orderings.Add (new Ordering (GetResolvedKeySelector (clauseGenerationContext), OrderingDirection.Desc));
queryModel.BodyClauses.Add (clause);
return queryModel;
}
public virtual void VisitOrderByClause (OrderByClause orderByClause, QueryModel queryModel, int index)
{
ArgumentUtility.CheckNotNull ("orderByClause", orderByClause);
ArgumentUtility.CheckNotNull ("queryModel", queryModel);
VisitOrderings (orderByClause.Orderings, queryModel, orderByClause);
}
protected virtual void VisitOrderings (ObservableCollection<Ordering> orderings, QueryModel queryModel, OrderByClause orderByClause)
{
ArgumentUtility.CheckNotNull ("queryModel", queryModel);
ArgumentUtility.CheckNotNull ("orderByClause", orderByClause);
ArgumentUtility.CheckNotNull ("orderings", orderings);
foreach (var indexValuePair in orderings.AsChangeResistantEnumerableWithIndex())
indexValuePair.Value.Accept (this, queryModel, orderByClause, indexValuePair.Index);
}
public virtual void VisitOrdering (Ordering ordering, QueryModel queryModel, OrderByClause orderByClause, int index)
{
ArgumentUtility.CheckNotNull ("ordering", ordering);
ArgumentUtility.CheckNotNull ("queryModel", queryModel);
ArgumentUtility.CheckNotNull ("orderByClause", orderByClause);
// nothing to do here
}
public override void VisitOrderByClause(OrderByClause orderByClause, QueryModel queryModel, int index)
{
QueryText.Append(" sort ");
for (int i = 0; i < orderByClause.Orderings.Count; i++)
{
GetAqlExpression(orderByClause.Orderings[i].Expression, queryModel);
QueryText.AppendFormat(" {0} {1} ",
orderByClause.Orderings[i].OrderingDirection == OrderingDirection.Asc ? "asc" : "desc",
i != orderByClause.Orderings.Count - 1 ? " , " : string.Empty);
}
base.VisitOrderByClause(orderByClause, queryModel, index);
}
/// <summary>
/// Clones this clause.
/// </summary>
/// <param name="cloneContext">The clones of all query source clauses are registered with this <see cref="CloneContext"/>.</param>
/// <returns>A clone of this clause.</returns>
public OrderByClause Clone (CloneContext cloneContext)
{
ArgumentUtility.CheckNotNull ("cloneContext", cloneContext);
var result = new OrderByClause();
foreach (var ordering in Orderings)
{
var orderingClone = ordering.Clone (cloneContext);
result.Orderings.Add (orderingClone);
}
return result;
}
