/// <summary>
/// Checks a record for nullness, type affinity, size overflow, and field count
/// </summary>
/// <param name="R">A record to check</param>
/// <param name="FixAffinity">If true, the method will cast an invalid affinity cell</param>
/// <returns>A boolean describing whether or not the check fails</returns>
public bool Check(Record R, bool FixAffinity)
{
// Check length //
if (R.Count != this.Count)
{
throw new Exception(String.Format("Record size {0} does not match schema size {1}", R.Count, this.Count));
}
// Check nullness and affinity //
for (int i = 0; i < R.Count; i++)
{
// Check affinity //
if (R[i].Affinity != this.ColumnAffinity(i) && this.ColumnAffinity(i) != CellAffinity.VARIANT && !FixAffinity)
{
throw new Exception(String.Format("Column Affinities do not match {0} : {1} != {2}", i, R[i].Affinity, this.ColumnAffinity(i)));
}
else if (R[i].Affinity != this.ColumnAffinity(i) && this.ColumnAffinity(i) != CellAffinity.VARIANT)
{
R[i] = CellConverter.Cast(R[i], this.ColumnAffinity(i));
}
// Check nullness //
if (!this.ColumnNull(i) && R[i].IsNull)
{
throw new Exception(String.Format("Column {0} is null", i));
}
}
return(true);
}
public override Cell Evaluate(SpoolSpace Memory)
{
this.CheckParameters();
Cell c = this._Children[0].Evaluate(Memory);
Cell d = this._Children[1].Evaluate(Memory);
CellAffinity a = (CellAffinity)d.BYTE;
return(CellConverter.Cast(c, a));
}
/// <summary>
/// Fixing any affinity issues by auto casting the cell type to the correct type based on the column
/// </summary>
/// <param name="R">A record to check</param>
/// <returns>A record</returns>
public Record Fix(Record R)
{
// Check nullness and affinity //
for (int i = 0; i < R.Count; i++)
{
// Cast to a new affinity if need by //
if (R[i].Affinity != this.ColumnAffinity(i) && this.ColumnAffinity(i) != CellAffinity.VARIANT)
{
R[i] = CellConverter.Cast(R[i], this.ColumnAffinity(i));
}
}
return(R);
}