protected override ComparerResult CompareObjects(object x, object y, Tolerance tolerance)
{
throw new NotImplementedException("You cannot compare two booleans with a tolerance");
}
protected abstract ComparerResult CompareObjects(object x, object y, Tolerance tolerance);
public ComparerResult Compare(object x, object y, ColumnType columnType, Tolerance tolerance, Rounding rounding)
{
//Any management
if (x.ToString() != "(any)" && y.ToString() != "(any)")
{
//Null management
if (DBNull.Value.Equals(x))
{
if (!DBNull.Value.Equals(y) && y.ToString() != "(null)" && y.ToString() != "(blank)")
{
return(new ComparerResult("(null)"));
}
}
else if (DBNull.Value.Equals(y))
{
if (!DBNull.Value.Equals(x) && x.ToString() != "(null)" && x.ToString() != "(blank)")
{
return(new ComparerResult(x.ToString()));
}
}
//(value) management
else if (x.ToString() == "(value)" || y.ToString() == "(value)")
{
if (DBNull.Value.Equals(x) || DBNull.Value.Equals(y))
{
return(new ComparerResult(DBNull.Value.Equals(y) ? "(null)" : x.ToString()));
}
}
//Not Null management
else
{
//Numeric
if (columnType == ColumnType.Numeric)
{
//Convert to decimal
if (rounding != null)
{
return(numericComparer.Compare(x, y, rounding));
}
else
{
return(numericComparer.Compare(x, y, tolerance));
}
}
//Date and Time
else if (columnType == ColumnType.DateTime)
{
//Convert to dateTime
if (rounding != null)
{
return(dateTimeComparer.Compare(x, y, rounding));
}
else if (tolerance != null && tolerance != DateTimeTolerance.None)
{
return(dateTimeComparer.Compare(x, y, tolerance));
}
else
{
return(dateTimeComparer.Compare(x, y));
}
}
//Boolean
else if (columnType == ColumnType.Boolean)
{
//Convert to bool
return(booleanComparer.Compare(x, y));
}
//Text
else
{
if (tolerance == null || tolerance == TextSingleMethodTolerance.None)
{
return(textComparer.Compare(x, y));
}
else
{
return(textComparer.Compare(x, y, tolerance));
}
}
}
}
return(ComparerResult.Equality);
}