private DQueryable <T> GetDQueryable(QueryRequest request)
{
if (!request.GroupResults)
{
request.Columns.Insert(0, new _EntityColumn(EntityColumnFactory().BuildColumnDescription(), QueryName));
return(Query
.ToDQueryable(GetQueryDescription())
.SelectMany(request.Multiplications())
.Where(request.Filters)
.OrderBy(request.Orders)
.Select(request.Columns));
}
else
{
var simpleFilters = request.Filters.Where(f => !f.IsAggregate()).ToList();
var aggregateFilters = request.Filters.Where(f => f.IsAggregate()).ToList();
var keys = request.Columns.Select(t => t.Token).Where(t => !(t is AggregateToken)).ToHashSet();
var allAggregates = request.AllTokens().OfType <AggregateToken>().ToHashSet();
DQueryable <T> query = Query
.ToDQueryable(GetQueryDescription())
.SelectMany(request.Multiplications())
.Where(simpleFilters)
.GroupBy(keys, allAggregates)
.Where(aggregateFilters)
.OrderBy(request.Orders);
return(query);
}
}
public override async Task <ResultTable> ExecuteQueryGroupAsync(QueryRequest request, CancellationToken cancellationToken)
{
var simpleFilters = request.Filters.Where(f => !f.IsAggregate()).ToList();
var aggregateFilters = request.Filters.Where(f => f.IsAggregate()).ToList();
var keys = request.Columns.Select(t => t.Token).Where(t => !(t is AggregateToken)).ToHashSet();
var allAggregates = request.AllTokens().OfType <AggregateToken>().ToHashSet();
var qr = new QueryRequest
{
Columns = keys.Concat(allAggregates.Select(at => at.Parent).NotNull()).Distinct().Select(t => new Column(t, t.NiceName())).ToList(),
Orders = new List <Order>(),
Filters = simpleFilters,
QueryName = request.QueryName,
Pagination = new Pagination.All(),
};
DEnumerableCount <T> plainCollection = await Execute(qr, GetQueryDescription(), cancellationToken);
var groupCollection = plainCollection
.GroupBy(keys, allAggregates)
.Where(aggregateFilters)
.OrderBy(request.Orders);
var cols = groupCollection.TryPaginate(request.Pagination);
return(cols.ToResultTable(request));
}