internal ProjectionExpression(SelectExpression source, Expression projector) : base((ExpressionType)DbExpressionType.Projection, projector.Type)
{
Source = source;
Projector = projector;
}
public Expression Remove(SelectExpression outerSelect, params SelectExpression[] selectsToRemove)
{
return(Remove(outerSelect, (IEnumerable <SelectExpression>)selectsToRemove));
}
public Expression Remove(SelectExpression outerSelect, IEnumerable <SelectExpression> selectsToRemove)
{
_selectsToRemove = new HashSet <SelectExpression>(selectsToRemove);
_map = selectsToRemove.ToDictionary(d => d.Alias, d => d.Columns.ToDictionary(d2 => d2.Name, d2 => d2.Expression));
return(Visit(outerSelect));
}
protected override Expression VisitSelect(SelectExpression select)
{
this.aliases.Add(select.Alias);
return(select);
}