public override IList <int[]> Evaluate(GroupByRollupEvalContext context)
{
var result = new int[_expressions.Count];
for (int i = 0; i < _expressions.Count; i++)
{
int index = context.GetIndex(_expressions[i]);
result[i] = index;
}
result.SortInPlace();
// find dups
for (int i = 0; i < result.Length - 1; i++)
{
if (result[i] == result[i + 1])
{
throw new GroupByRollupDuplicateException(
new int[]
{
result[i]
});
}
}
return(Collections.SingletonList(result));
}
public override IList <int[]> Evaluate(GroupByRollupEvalContext context)
{
int index = context.GetIndex(_expression);
return(Collections.SingletonList(
new int[]
{
index
}));
}