public static Query AddLastTableSourceAlias(this Query query, string alias)
{
Argument.NotNull(query, "query");
Argument.NotWhiteSpace(alias, "alias");
var lastTableSource = query.From.InternalNodes.LastOrDefault();
if (lastTableSource == null)
{
throw new InvalidOperationException("Query's table source list is empty.");
}
var lastItem = lastTableSource as SimpleTableSource;
if (lastItem == null)
{
throw new InvalidOperationException("An alias couldn't be added to the last query's table source.");
}
if (lastItem.Alias != null)
{
throw new InvalidOperationException("Last table source already has an alias.");
}
var newTableSource = new SimpleTableSource(lastItem.Table, alias);
return(new Query(query.Select, query.From.ReplaceLast(newTableSource), query.Where));
}
protected internal virtual void VisitSimpleTableSource(SimpleTableSource tableSource)
{
}