public static AggregationContainerDescriptor <T> SortedTopHits <T>(this AggregationContainerDescriptor <T> agg, int size, Expression <Func <T, object> > fieldSort, SortType sorttype, params Expression <Func <T, object> >[] fieldGetter) where T : class
{
var aggName = sorttype + fieldSort.GetAggName(AggType.TopHits);
var sortFieldDescriptor = new SortFieldDescriptor <T>();
var fieldSortName = Names.GetNameFromGetFieldNamed(fieldSort.Body);
sortFieldDescriptor = fieldSortName != null?sortFieldDescriptor.Field(fieldSortName) : sortFieldDescriptor.Field(fieldSort);
sortFieldDescriptor = sorttype == SortType.Ascending ? sortFieldDescriptor.Ascending() : sortFieldDescriptor.Descending();
var fieldNames = fieldGetter.Select(x => Names.GetNameFromGetFieldNamed(x.Body)).Where(x => x != null);
var fieldGetters = fieldGetter.Where(x => Names.GetNameFromGetFieldNamed(x.Body) == null);
var allFields = fieldNames.Select(x => new Field(x)).Concat(fieldGetters.Select(x => new Field(x)));
return(agg.TopHits(
aggName,
x =>
x
.Size(size)
.Source(i => i.Includes(f => f.Fields(allFields)))
.Sort(s => new PromiseValue <IList <ISort> >(new List <ISort> {
sortFieldDescriptor
}))));
}
public static AggregationContainerDescriptor <T> SortedTopHits <T>(this AggregationContainerDescriptor <T> agg, int size, Expression <Func <T, object> > fieldSort, SortType sorttype, params Expression <Func <T, object> >[] fieldGetter) where T : class
{
var aggName = sorttype + fieldSort.GetAggName(AggType.TopHits);
var sortFieldDescriptor = new SortFieldDescriptor <T>();
sortFieldDescriptor = sortFieldDescriptor.Field(fieldSort);
if (sorttype == SortType.Ascending)
{
sortFieldDescriptor = sortFieldDescriptor.Ascending();
}
else
{
sortFieldDescriptor = sortFieldDescriptor.Descending();
}
return(agg.TopHits(aggName, x => x.Size(size).Source(i => i.Include(f => f.Fields(fieldGetter))).Sort(s => sortFieldDescriptor)));
}