} // _Ordered_Comparer_impl_ class
public static DataSet getOrdered(DataSet dataSet, params OrderByItem[] orderByItems)
{
List <Row> values = new List <Row>();
IComparer <Row> valueComparator = null;
if (orderByItems != null && orderByItems.Length != 0)
{
int[] sortIndexes = new int[orderByItems.Length];
for (int i = 0; i < orderByItems.Length; i++)
{
OrderByItem item = orderByItems[i];
int index_of = dataSet.indexOf(item.getSelectItem());
sortIndexes[i] = index_of;
}
values = readDataSetFull(dataSet);
if (values.IsEmpty())
{
return(new EmptyDataSet(dataSet.getSelectItems()));
}
valueComparator = ObjectComparator.getComparator();
// create a comparator for doing the actual sorting/ordering
IComparer <Row> comparator = new _Ordered_Comparer_impl_(valueComparator, orderByItems);
}
values.Sort(valueComparator); // Collections.sort(data, comparator);
dataSet = new InMemoryDataSet(values);
return(dataSet);
} // getOrdered()
private bool compare(Object selectItemValue, Object operandValue)
{
IComparer <Object> comparator = ObjectComparator.getComparator();
if (_operator == OperatorType.DIFFERENT_FROM)
{
return(comparator.Compare(selectItemValue, operandValue) != 0);
}
else if (_operator == OperatorType.EQUALS_TO)
{
return(comparator.Compare(selectItemValue, operandValue) == 0);
}
else if (_operator == OperatorType.GREATER_THAN)
{
return(comparator.Compare(selectItemValue, operandValue) > 0);
}
else if (_operator == OperatorType.GREATER_THAN_OR_EQUAL)
{
return(comparator.Compare(selectItemValue, operandValue) >= 0);
}
else if (_operator == OperatorType.LESS_THAN)
{
return(comparator.Compare(selectItemValue, operandValue) < 0);
}
else if (_operator == OperatorType.LESS_THAN_OR_EQUAL)
{
return(comparator.Compare(selectItemValue, operandValue) <= 0);
}
else if (_operator == OperatorType.LIKE)
{
//WildcardPattern matcher = new WildcardPattern((String)operandValue, '%');
//return matcher.matches((String)selectItemValue);
return(false);
}
else if (_operator == OperatorType.NOT_LIKE)
{
//WildcardPattern matcher = new WildcardPattern((String)operandValue, '%');
//return !matcher.matches((String)selectItemValue);
return(false);
}
else if (_operator == OperatorType.IN)
{
HashSet <object> inValues = getInValues();
return(inValues.Contains(selectItemValue));
}
else if (_operator == OperatorType.NOT_IN)
{
HashSet <object> inValues = getInValues();
return(!inValues.Contains(selectItemValue));
}
else
{
throw new InvalidOperationException("Operator could not be determined");
}
}
} // getName()
// public override Comparator<object> getComparator()
public IComparer <object> getComparator()
{
if (isTimeBased())
{
return(TimeComparator.getComparator());
}
if (isNumber())
{
return(NumberComparator.getComparator());
}
if (isLiteral())
{
return(ToStringComparator.getComparator());
}
return(ObjectComparator.getComparator());
} // getComparator()