public Subset CreateByTag(string tagId, string tagField)
{
var docQuery = queryFactory.GetDocumentQuery(_indexName);
var wordQuery = queryFactory.GetWordQuery(_indexName);
var docs = docQuery.GetByTagId(tagId, tagField, DocumentQuery.GetDocumentElasticFields(new[] { DocumentElastic.IdField }));
Func <string, bool> isAttachmentField = (field) => attachmentFields.Any(attachmentField =>
string.Equals(attachmentField, field, StringComparison.OrdinalIgnoreCase));
var fields = _textFields
.Select(field => isAttachmentField(field) ? $"{field}.content" : field)
.ToList();
var wwo = wordQuery.GetWordsWithOccurences(docs.Select(d => d.Id).ToList(), fields, _nGramCount);
var subset = new Subset
{
AllWordsOccurencesSumInCorpus = _allWordsOccurences,
AllWordsOccurencesSumInTag = wwo.Sum(w => w.Value.Tag),
WordsWithOccurences = wwo
};
return(subset);
}