public static TermsAggregation TermsAggregation <T>(Expression <Func <T, object> > fieldExpression,
AggsOrderBy orderBy, AggsOrderDirection direction, int?size = null,
params IAggregation[] statAggregation) where T : new()
{
var fieldName = ExpressionHelper.GetPropertyName(fieldExpression);
var termA = new TermsAggregation(fieldName, size, new AggsOrder(orderBy, direction));
foreach (var sa in statAggregation)
{
if (termA.Aggregations == null)
{
termA.Aggregations = new Dictionary <string, IAggregation>();
}
if (sa.IsSubclassOfRawGeneric(typeof(RangeAggregation <>)) || sa is TermsAggregation)
{
termA.Aggregations["nested"] = sa;
}
else
{
termA.Aggregations[sa.GetType().Name.Replace("Aggregation", "")] = sa;
}
}
return(termA);
}
public static IAggregation BucketSort <T>(this IStatAggregation agg, Expression <Func <T, object> > fieldExpression,
AggsOrderDirection direction, int?size = null, int?from = null)
{
var fieldName = ExpressionHelper.GetPropertyName(fieldExpression);
agg.Aggregations[$"bucket_sort_{fieldName}"] = new BucketSortAggregation
{
BucketSort = new BucketSort
{
Size = size,
From = from,
Sorts = new[] { new Sort {
[fieldName] = direction.ToString()
} }
}
};
return(agg);
}
