public SelectClauseHandler(SelectClause clause)
{
_references = clause.Columns.ToList();
_resolvers = _references.Select(ValueResolver.Create).ToList();
if (_resolvers.OfType<AggregateValueResolver>().Any())
{
_groupingHandler =
new GroupingHandler(
_references.Where(ReferenceIsNotAggregateFunction).Select(r => r.GetAliasOrName()).ToArray());
}
}
public SelectClauseHandler(SelectClause clause)
{
_references = clause.Columns.ToList();
if (!(_references.Count == 1 && _references[0] is SpecialReference))
{
_resolvers = _references.Select(ValueResolver.Create).ToList();
if (_resolvers.OfType <AggregateValueResolver>().Any())
{
_groupingHandler =
new GroupingHandler(
_references.Where(ReferenceIsNotAggregateFunction).Select(r => r.GetAliasOrName()).ToArray());
}
}
}
public void GroupingOnSingleKeyWorks()
{
var source = new List<IDictionary<string, object>>
{
new Dictionary<string, object> {{"Id", 1}, {"Size", 1}},
new Dictionary<string, object> {{"Id", 1}, {"Size", 2}},
new Dictionary<string, object> {{"Id", 1}, {"Size", 3}},
new Dictionary<string, object> {{"Id", 2}, {"Size", 4}},
new Dictionary<string, object> {{"Id", 2}, {"Size", 5}},
new Dictionary<string, object> {{"Id", 2}, {"Size", 6}},
};
var target = new GroupingHandler("Id");
var actual = target.Group(source).ToList();
Assert.AreEqual(2, actual.Count);
}