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
}))));
}
/// <inheritdoc />
public ISortFieldDescriptor Field(NameString name)
{
SortFieldDescriptor?fieldDescriptor =
Fields.FirstOrDefault(t => t.Definition.Name == name);
if (fieldDescriptor is null)
{
fieldDescriptor = SortFieldDescriptor.New(Context, name, Definition.Scope);
Fields.Add(fieldDescriptor);
}
return(fieldDescriptor);
}
public IFieldSort SortOrderCustom(SortFieldDescriptor <T> f, string ordername = "", SortOrder?order = null)
{
switch (order)
{
case SortOrder.Ascending:
f.Field(ordername).Ascending();
break;
case SortOrder.Descending:
f.Field(ordername).Descending();
break;
}
return(f);
}
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)));
}
/// <inheritdoc />
public ISortInputTypeDescriptor Ignore(NameString name)
{
SortFieldDescriptor?fieldDescriptor =
Fields.FirstOrDefault(t => t.Definition.Name == name);
if (fieldDescriptor is null)
{
fieldDescriptor = SortFieldDescriptor.New(
Context,
name,
Definition.Scope);
Fields.Add(fieldDescriptor);
}
fieldDescriptor.Ignore();
return(this);
}
private IFieldSort SortFromUserInput(SortFieldDescriptor <Document> f, string userInput)
{
f.Order(Nest.SortOrder.Descending);
switch (userInput)
{
case "uploadDate":
f.Field(ff => ff.UploadDate);
break;
case "meetDate":
f.Field(ff => ff.DateOfMeeting);
break;
default:
f.Field("_score");
f.Descending();
break;
}
return(f);
}
