protected override ComparerResult CompareObjects(object x, object y, Tolerance tolerance)
{
if (!(tolerance is DateTimeTolerance))
throw new ArgumentException("Tolerance must be of type 'DateTimeTolerance'");
return CompareObjects(x, y, (DateTimeTolerance)tolerance);
}
private string GetToleranceText(Tolerance tolerance)
{
var toleranceText = string.Empty;
if (tolerance != null)
toleranceText += string.Format(" (+/- {0}) ", tolerance.ValueString);
return toleranceText;
}
public ComparerResult Compare(object x, object y, Tolerance tolerance)
{
var eq = CompareBasic(x, y);
if (eq != null)
return eq;
return CompareObjects(x, y, tolerance);
}
public virtual string GetText(ColumnRole role, ColumnType type, Tolerance tolerance, Rounding rounding)
{
var roleText = GetRoleText(role);
var typeText = GetTypeText(type);
var toleranceText = GetToleranceText(tolerance);
var roundingText = GetRoundingText(rounding);
var value = string.Format("{0} ({1}){2}{3}{4}", roleText, typeText, (toleranceText + roundingText).Length > 0 ? " " : "", toleranceText, roundingText);
return value;
}
protected abstract ComparerResult CompareObjects(object x, object y, Tolerance tolerance);
protected abstract ComparerResult CompareObjects(object x, object y, Tolerance tolerance);
protected override ComparerResult CompareObjects(object x, object y, Tolerance tolerance)
{
throw new NotImplementedException("You cannot compare with a text comparer and a tolerance.");
}
protected override ComparerResult CompareObjects(object x, object y, Tolerance tolerance)
{
throw new NotImplementedException("You cannot compare two booleans with a 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);
}