private static void NeedsOrdering(OrderingFinder finder, MethodCallExpression node)
{
if (QueryableUtility.IsOrderingMethod(node))
{
finder.NeedsOrderBy = false;
finder.state = Finish;
}
}
private static void Start(OrderingFinder finder, MethodCallExpression node)
{
if (methods.Any(m => m.Equals(node.Method.Name)))
{
finder.NeedsOrderBy = true;
finder.state = NeedsOrdering;
}
}
private static void NeedsOrdering(OrderingFinder finder, MethodCallExpression node)
{
if (QueryableUtility.IsOrderingMethod(node))
{
finder.NeedsOrderBy = false;
finder.state = Finish;
}
}
private static void Start(OrderingFinder finder, MethodCallExpression node)
{
if (methods.Any(m => m.Equals(node.Method.Name)))
{
finder.NeedsOrderBy = true;
finder.state = NeedsOrdering;
}
}
internal static bool NeedsOrderMethod(Expression expression)
{
OrderingFinder finder = new OrderingFinder
{
NeedsOrderBy = false
};
finder.Visit(expression);
return finder.NeedsOrderBy;
}
internal static bool NeedsOrderMethod(Expression expression)
{
OrderingFinder finder = new OrderingFinder
{
NeedsOrderBy = false
};
finder.Visit(expression);
return(finder.NeedsOrderBy);
}
public Expression Visit(IQueryable query)
{
if (OrderingFinder.NeedsOrderMethod(query.Expression))
{
// Create Ordered at root and combine both queries.
var orderedQuery = query.OrderBy(this.propertyAccessor.GetAccessor <T>());
return(QueryComposer.Compose(orderedQuery, query).Expression);
}
return(query.Expression);
}