public dynamic this[string column]
{
get
{
if (FrameColumns.ContainsKey(column))
{
return(FrameColumns[column].GetVal(Index));;
}
else if (CustomColumns.ContainsKey(column))
{
return(CustomColumns[column]);
}
else
{
throw new IndexOutOfRangeException($"Column {column} does not exist.");
}
}
set
{
if (FrameColumns.ContainsKey(column))
{
FrameColumns[column].SetVal(Index, value);;
}
else if (CustomColumns.ContainsKey(column))
{
CustomColumns[column] = value;
}
else
{
throw new IndexOutOfRangeException($"Column {column} does not exist.");
}
}
}
public FrameDR Sel(params string[] columns)
{
var notfound = columns.Where(c => !FrameColumns.ContainsKey(c) || !CustomColumns.ContainsKey(c));
if (notfound.Count() != 0)
{
throw new ArgumentException($"The following columns do not exist in the row: {notfound.Aggregate((s1, s2) => s1 + "," + s2)}.");
}
var frameColumns = FrameColumns.Where(c => columns.Contains(c.Key));
FrameDR dr = null;
if (columns.Count() != 0)
{
dr = new FrameDR(this.Frame, this.Index, frameColumns.Select(c => c.Value).ToArray());
}
else
{
dr = new FrameDR();
}
var customColumns = CustomColumns.Where(c => columns.Contains(c.Key));
foreach (var c in customColumns)
{
dr.Add((c.Key, c.Value));
}
return(dr);
}
public FrameDR(Frame f, int index, params IColumn[] columns) : this()
{
Frame = f;
FrameColumnsArray = columns ?? throw new ArgumentNullException();
Index = index;
for (int i = 0; i < FrameColumnsArray.Length; i++)
{
FrameColumns.Add(FrameColumnsArray[i].Label, FrameColumnsArray[i]);
}
foreach (var c in FrameColumns)
{
AddCallSite(c.Key);
}
}
public override bool TrySetMember(SetMemberBinder binder, object value)
{
if (FrameColumns.ContainsKey(binder.Name))
{
IColumn s = (IColumn)CallSites[binder.Name].Target(CallSites[binder.Name], this.Frame);
return(s.SetVal(Index, value));
}
else if (CustomColumns.ContainsKey(binder.Name))
{
return(CustomColumns[binder.Name] = value);
}
else
{
CustomColumns.Add(binder.Name, value);
return(true);
}
}
public override bool TryGetMember(GetMemberBinder binder, out object result)
{
result = null;
if (FrameColumns.ContainsKey(binder.Name))
{
if (!CallSites.ContainsKey(binder.Name))
{
AddCallSite(binder.Name);
}
result = GetFrameColumnMember(binder.Name);
return(true);
}
else if (CustomColumns.ContainsKey(binder.Name))
{
result = CustomColumns[binder.Name];
return(true);
}
else
{
return(false);
}
}
