func BlevePIndexQuerySamples() []cbgt.Documentation {
	return []cbgt.Documentation{
		cbgt.Documentation{
			Text: "A simple bleve query POST body:",
			JSON: &struct {
				*cbgt.QueryCtlParams
				*bleve.SearchRequest
			}{
				nil,
				&bleve.SearchRequest{
					From:  0,
					Size:  10,
					Query: bleve.NewQueryStringQuery("a sample query"),
				},
			},
		},
		cbgt.Documentation{
			Text: `An example POST body using from/size for results paging,
using ctl for a timeout and for "at_plus" consistency level.
On consistency, the index must have incorporated at least mutation
sequence-number 123 for partition (vbucket) 0 and mutation
sequence-number 234 for partition (vbucket) 1 (where vbucket 1
should have a vbucketUUID of a0b1c2):`,
			JSON: &struct {
				*cbgt.QueryCtlParams
				*bleve.SearchRequest
			}{
				&cbgt.QueryCtlParams{
					Ctl: cbgt.QueryCtl{
						Timeout: cbgt.QUERY_CTL_DEFAULT_TIMEOUT_MS,
						Consistency: &cbgt.ConsistencyParams{
							Level: "at_plus",
							Vectors: map[string]cbgt.ConsistencyVector{
								"customerIndex": cbgt.ConsistencyVector{
									"0":        123,
									"1/a0b1c2": 234,
								},
							},
						},
					},
				},
				&bleve.SearchRequest{
					From:      20,
					Size:      10,
					Fields:    []string{"*"},
					Query:     bleve.NewQueryStringQuery("alice smith"),
					Highlight: bleve.NewHighlight(),
					Explain:   true,
				},
			},
		},
	}
}

func (pages *Pages) QueryString(field string, str string) *Pages {
	q := bleve.NewQueryStringQuery(str)
	q.SetField(field)
	pages.queries = append(pages.queries, q)
	pages.clear()
	return pages
}

// Search is an http.HandlerFunc that accepts a Parse Cloud Code Webhook request.
//
// The expected query parameter is 'q'
func (i *Indexer) Search(w http.ResponseWriter, r *http.Request) {
	req, err := webhookRequest(r, i.webhookKey)
	if err != nil {
		writeErr(w, err)
		return
	}
	rawq := req.Params["q"]
	if rawq == nil {
		writeErr(w, fmt.Errorf("no term provided"))
		return
	}
	q, ok := rawq.(string)
	if q == "" || !ok {
		writeErr(w, fmt.Errorf("no term provided"))
		return
	}
	query := bleve.NewQueryStringQuery(q)
	search := bleve.NewSearchRequest(query)
	searchResults, err := i.index.Search(search)
	if err != nil {
		writeErr(w, err)
		return
	}
	spew.Dump(searchResults)
	ids := []string{}
	for _, h := range searchResults.Hits {
		ids = append(ids, h.ID)
	}
	err = json.NewEncoder(w).Encode(Response{
		Success: ids,
	})
	if err != nil {
		log.Println("error encoding response:", err)
	}
}

func (docstore *DocStoreExt) Search(collection, queryString string) ([]byte, error) {
	js := []byte{}
	query := bleve.NewQueryStringQuery(queryString)
	searchRequest := bleve.NewSearchRequest(query)
	searchResult, err := docstore.index.Search(searchRequest)
	if err != nil {
		return nil, err
	}
	for index, sr := range searchResult.Hits {
		jsPart := []byte{}
		_, err := docstore.fetchDoc(collection, sr.ID, &jsPart)
		if err != nil {
			return nil, err
		}
		js = append(js, addID(jsPart, sr.ID)...)
		if index != len(searchResult.Hits)-1 {
			js = append(js, []byte(",")...)
		}
	}
	if len(searchResult.Hits) > 0 {
		js = js[0 : len(js)-1]
	}
	js = append(js, []byte("]")...)
	// "_meta": searchResult,
	// "data":  docs,
	// TODO(tsileo) returns meta along with argument
	return js, nil
}

// Search method lookup for records using a query
func (i *bleveIndexer) Search(q string) (records []indexer.Record) {
	query := bleve.NewQueryStringQuery(q)
	request := bleve.NewSearchRequest(query)
	request.Highlight = bleve.NewHighlight()
	result, err := i.bleve.Search(request)
	if err != nil { // an empty query would cause this
		return
	}

	for _, match := range result.Hits {
		rec := i.Record(match.ID)
		loaded := rec.Load()

		if !loaded {
			continue
		}

		if len(match.Fragments["Body"]) > 0 {
			rec.SetBody([]byte(match.Fragments["Body"][0]))
		}

		records = append(records, rec)
	}

	return
}

func (b *Index) Search(queryStr string, offset, limit int, highlights bool) (*bleve.SearchResult, error) {
	query := bleve.NewQueryStringQuery(queryStr)
	req := bleve.NewSearchRequestOptions(query, limit, offset, false)
	if highlights {
		req.Highlight = bleve.NewHighlightWithStyle("ansi")
	}
	return b.index.Search(req)
}

func main() {

	flag.Parse()

	if *cpuprofile != "" {
		f, err := os.Create(*cpuprofile)
		if err != nil {
			log.Fatal(err)
		}
		err = pprof.StartCPUProfile(f)
		if err != nil {
			log.Fatal(err)
		}
		defer pprof.StopCPUProfile()
	}

	if *indexPath == "" {
		log.Fatal("Specify index to query")
	}

	if flag.NArg() < 1 {
		log.Fatal("Specify search query")
	}

	// open index
	index, err := bleve.Open(*indexPath)
	if err != nil {
		log.Fatal(err)
	}
	defer func() {
		cerr := index.Close()
		if cerr != nil {
			log.Fatalf("error closing index: %v", err)
		}
	}()

	for i := 0; i < *repeat; i++ {
		// build a search with the provided parameters
		queryString := strings.Join(flag.Args(), " ")
		query := bleve.NewQueryStringQuery(queryString)
		searchRequest := bleve.NewSearchRequestOptions(query, *limit, *skip, *explain)

		// enable highlights if requested
		if *includeHighlights {
			searchRequest.Highlight = bleve.NewHighlightWithStyle("ansi")
		}

		// execute the search
		searchResult, err := index.Search(searchRequest)
		if err != nil {
			log.Fatalf("search error: %v", err)
		}
		fmt.Println(searchResult)
	}
}

func (be *BleveEngine) Search(query string) (interface{}, error) {
	index, _ := bleve.Open(INDEX)
	bleveQuery := bleve.NewQueryStringQuery(query)
	searchRequest := bleve.NewSearchRequest(bleveQuery)
	searchResults, err := index.Search(searchRequest)
	if err != nil {
		return nil, err
	}

	return searchResults, nil
}

// Search performs a search of the index using the given query. Returns IDs of documents
// which satisfy all queries. Returns Doc IDs in sorted order, ascending.
func (i *Index) Search(q string) (DocIDs, error) {
	query := bleve.NewQueryStringQuery(q)
	searchRequest := bleve.NewSearchRequest(query)
	searchRequest.Size = maxSearchHitSize
	searchResults, err := i.Alias.Search(searchRequest)
	if err != nil {
		return nil, err
	}

	docIDs := make(DocIDs, 0, len(searchResults.Hits))
	for _, d := range searchResults.Hits {
		docIDs = append(docIDs, DocID(d.ID))
	}
	sort.Sort(docIDs)
	return docIDs, nil
}

// Find all comments matching text
// @return result.Result<[]*Comment, error>
func CommentsWithContent(repoPath, content string) result.Result {
	return openIndex(repoPath, func(repo *git.Repository, index bleve.Index) result.Result {
		query := bleve.NewQueryStringQuery(content)
		request := bleve.NewSearchRequest(query)
		return result.NewResult(index.Search(request)).FlatMap(func(match interface{}) result.Result {
			hits := match.(*bleve.SearchResult).Hits
			comments := make([]*gc.Comment, len(hits))
			for idx, hit := range hits {
				gc.CommentByID(repo, hit.ID).FlatMap(func(comment interface{}) result.Result {
					comments[idx] = comment.(*gc.Comment)
					return result.Result{}
				})
			}
			return result.NewSuccess(comments)
		})
	})
}

func (cache *BleveCache) Search(ctx context.Context, term string, options SearchOptions) ([]*RecipeLink, error) {
	q := bleve.NewQueryStringQuery(term)
	req := bleve.NewSearchRequest(q)
	res, err := cache.index.Search(req)
	if err != nil {
		return nil, err
	}
	links := make([]*RecipeLink, len(res.Hits))
	for i, hit := range res.Hits {
		filePath := cache.dbPath + "/" + hit.ID + ".json"
		links[i], err = loadRecipeLink(filePath)
		if err != nil {
			return links, err
		}
	}
	return links, err
}

// Search the swish index for a given query.
func searchBleve(queryString string) (Results, error) {
	index, err := openIndex()
	if err != nil {
		LogError(err)
		return Results{}, err
	}
	defer index.Close()

	newQueryString := ""
	for _, tmp := range strings.Split(queryString, " ") {
		word := strings.TrimSpace(tmp)
		if word[0] == '-' || word[0] == '+' {
			newQueryString += " " + word
		} else if word[0] == '~' {
			// Remove prefix to make term optional
			newQueryString += " " + word[1:]
		} else {
			newQueryString += " +" + word
		}
	}

	query := bleve.NewQueryStringQuery(newQueryString[1:]) // Remove leading space
	search := bleve.NewSearchRequest(query)
	search.Size = Config.MaxResults
	searchResults, err := index.Search(search)
	if err != nil {
		println("Invalid query string: '" + newQueryString[1:] + "'")
		LogError(err)
		return Results{}, err
	}

	var ids []Scroll
	for _, match := range searchResults.Hits {
		id := Id(match.ID)
		content, err := readScroll(id)
		TryLogError(err)
		scroll := Parse(string(id), content)
		ids = append(ids, scroll)
	}

	return Results{ids[:len(searchResults.Hits)], int(searchResults.Total)}, nil
}

// search executes a search for rooms or buildings.
func (s *Server) search(w http.ResponseWriter, r *http.Request) {
	query := r.URL.Query()

	q := query.Get("q")
	typeFilter := query.Get("type")

	results := []*models.Index{}
	if idx, ok := s.idIndex[q]; ok {
		results = append(results, idx)
	} else {
		query := bleve.NewBooleanQuery()
		if len(q) > 0 {
			/*fuzzy_query := bleve.NewFuzzyQuery(q)
			fuzzy_query.FuzzinessVal = 3
			queryShould = append(queryShould, fuzzy_query)
			queryShould = append(queryShould, bleve.NewRegexpQuery("[a-zA-Z0-9_]*"+q+"[a-zA-Z0-9_]*"))
			queryShould = append(queryShould, bleve.NewQueryStringQuery(q))*/
			query.AddShould(bleve.NewQueryStringQuery(q))
		}

		if typeFilter != "all" {
			termQuery := bleve.NewTermQuery(typeFilter)
			query.AddMust(termQuery)
		}

		searchRequest := bleve.NewSearchRequest(query)
		searchRequest.Size = 25
		searchResult, err := s.index.Search(searchRequest)
		if err != nil {
			http.Error(w, err.Error(), 500)
			return
		}

		for _, result := range []*search.DocumentMatch(searchResult.Hits) {
			results = append(results, s.idIndex[result.ID])
		}
	}

	w.Header().Set("Content-Type", "application/json")
	json.NewEncoder(w).Encode(results)
}

// START OMIT
func main() {

	index, err := bleve.Open("gophercon.bleve")
	if err != nil {
		log.Fatal(err)
	}

	qString := `+content:debugger ` // HLQUERY
	qString += `title:"delve" `     // HLQUERY
	qString += `title:go~2 `        // HLQUERY
	qString += `-content:rust `     // HLQUERY
	qString += `word_count:>30`     // HLQUERY
	q := bleve.NewQueryStringQuery(qString)
	req := bleve.NewSearchRequest(q)
	req.Highlight = bleve.NewHighlightWithStyle("html")
	req.Fields = []string{"title", "author", "content", "word_count"}
	res, err := index.Search(req)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Println(res)
}

func buildQuery(args []string) query.Query {
	var q query.Query
	switch qtype {
	case "prefix":
		pquery := bleve.NewPrefixQuery(strings.Join(args[1:], " "))
		if qfield != "" {
			pquery.SetField(qfield)
		}
		q = pquery
	case "term":
		pquery := bleve.NewTermQuery(strings.Join(args[1:], " "))
		if qfield != "" {
			pquery.SetField(qfield)
		}
		q = pquery
	default:
		// build a search with the provided parameters
		queryString := strings.Join(args[1:], " ")
		q = bleve.NewQueryStringQuery(queryString)
	}
	return q
}

func main() {

	flag.Parse()

	if *indexPath == "" {
		log.Fatal("specify index to query")
	}

	if flag.NArg() < 1 {
		log.Fatal("Specify search query")
	}

	// open index
	index, err := bleve.Open(*indexPath)
	if err != nil {
		log.Fatal(err)
	}
	defer index.Close()

	// build a search with the provided parameters
	queryString := strings.Join(flag.Args(), " ")
	query := bleve.NewQueryStringQuery(queryString)
	searchRequest := bleve.NewSearchRequestOptions(query, *limit, *skip, *explain)

	// enable highlights if requested
	if *includeHighlights {
		searchRequest.Highlight = bleve.NewHighlightWithStyle("ansi")
	}

	// execute the search
	searchResult, err := index.Search(searchRequest)
	if err != nil {
		log.Fatalf("search error: %v", err)
	}
	fmt.Println(searchResult)
}

func main() {

	flag.Parse()

	if *cpuprofile != "" {
		f, err := os.Create(*cpuprofile)
		if err != nil {
			log.Fatal(err)
		}
		err = pprof.StartCPUProfile(f)
		if err != nil {
			log.Fatal(err)
		}
		defer pprof.StopCPUProfile()
	}

	if *indexPath == "" {
		log.Fatal("Specify index to query")
	}

	if flag.NArg() < 1 {
		log.Fatal("Specify search query")
	}

	// open index
	index, err := bleve.Open(*indexPath)
	if err != nil {
		log.Fatal(err)
	}
	defer func() {
		cerr := index.Close()
		if cerr != nil {
			log.Fatalf("error closing index: %v", err)
		}
	}()

	for i := 0; i < *repeat; i++ {
		var query bleve.Query

		switch *qtype {
		case "prefix":
			pquery := bleve.NewPrefixQuery(strings.Join(flag.Args(), " "))
			if *qfield != "" {
				pquery.SetField(*qfield)
			}
			query = pquery
		case "term":
			pquery := bleve.NewTermQuery(strings.Join(flag.Args(), " "))
			if *qfield != "" {
				pquery.SetField(*qfield)
			}
			query = pquery
		default:
			// build a search with the provided parameters
			queryString := strings.Join(flag.Args(), " ")
			query = bleve.NewQueryStringQuery(queryString)
		}

		searchRequest := bleve.NewSearchRequestOptions(query, *limit, *skip, *explain)

		// enable highlights if requested
		if *includeHighlights {
			searchRequest.Highlight = bleve.NewHighlightWithStyle("ansi")
		}

		if *includeStoredFields {
			searchRequest.Fields = []string{"*"}
		}

		// execute the search
		searchResult, err := index.Search(searchRequest)
		if err != nil {
			log.Fatalf("search error: %v", err)
		}
		fmt.Println(searchResult)
	}
}

func query(term, highlight string, index bleve.Index, u content.User, feedIds []data.FeedId, paging ...int) (ua []content.UserArticle, err error) {
	var query bleve.Query

	query = bleve.NewQueryStringQuery(term)

	if len(feedIds) > 0 {
		queries := make([]bleve.Query, len(feedIds))
		conjunct := make([]bleve.Query, 2)

		for i, id := range feedIds {
			q := bleve.NewTermQuery(strconv.FormatInt(int64(id), 10))
			q.SetField("FeedId")

			queries[i] = q
		}

		disjunct := bleve.NewDisjunctionQuery(queries)

		conjunct[0] = query
		conjunct[1] = disjunct

		query = bleve.NewConjunctionQuery(conjunct)
	}

	searchRequest := bleve.NewSearchRequest(query)

	if highlight != "" {
		searchRequest.Highlight = bleve.NewHighlightWithStyle(highlight)
	}

	limit, offset := pagingLimit(paging)
	searchRequest.Size = limit
	searchRequest.From = offset

	searchResult, err := index.Search(searchRequest)

	if err != nil {
		return
	}

	if len(searchResult.Hits) == 0 {
		return
	}

	articleIds := []data.ArticleId{}
	hitMap := map[data.ArticleId]*search.DocumentMatch{}

	for _, hit := range searchResult.Hits {
		if articleId, err := strconv.ParseInt(hit.ID, 10, 64); err == nil {
			id := data.ArticleId(articleId)
			articleIds = append(articleIds, id)
			hitMap[id] = hit
		}
	}

	ua = u.ArticlesById(articleIds)
	if u.HasErr() {
		return ua, u.Err()
	}

	for i := range ua {
		data := ua[i].Data()

		hit := hitMap[data.Id]

		if len(hit.Fragments) > 0 {
			data.Hit.Fragments = hit.Fragments
			ua[i].Data(data)
		}
	}
	return
}

func Search(q string) (*bleve.SearchResult, error) {
	query := bleve.NewQueryStringQuery(q)
	req := bleve.NewSearchRequest(query)
	req.Highlight = bleve.NewHighlightWithStyle("html_ex")
	return index.Search(req)
}

func Example() {
	INDEX_DIR := "gojieba.bleve"
	messages := []struct {
		Id   string
		Body string
	}{
		{
			Id:   "1",
			Body: "你好",
		},
		{
			Id:   "2",
			Body: "交代",
		},
		{
			Id:   "3",
			Body: "长江大桥",
		},
	}

	indexMapping := bleve.NewIndexMapping()
	os.RemoveAll(INDEX_DIR)
	// clean index when example finished
	defer os.RemoveAll(INDEX_DIR)

	err := indexMapping.AddCustomTokenizer("gojieba",
		map[string]interface{}{
			"dictpath":     gojieba.DICT_PATH,
			"hmmpath":      gojieba.HMM_PATH,
			"userdictpath": gojieba.USER_DICT_PATH,
			"idf":          gojieba.IDF_PATH,
			"stop_words":   gojieba.STOP_WORDS_PATH,
			"type":         "gojieba",
		},
	)
	if err != nil {
		panic(err)
	}
	err = indexMapping.AddCustomAnalyzer("gojieba",
		map[string]interface{}{
			"type":      "gojieba",
			"tokenizer": "gojieba",
		},
	)
	if err != nil {
		panic(err)
	}
	indexMapping.DefaultAnalyzer = "gojieba"

	index, err := bleve.New(INDEX_DIR, indexMapping)
	if err != nil {
		panic(err)
	}
	for _, msg := range messages {
		if err := index.Index(msg.Id, msg); err != nil {
			panic(err)
		}
	}

	querys := []string{
		"你好世界",
		"亲口交代",
		"长江",
	}

	for _, q := range querys {
		req := bleve.NewSearchRequest(bleve.NewQueryStringQuery(q))
		req.Highlight = bleve.NewHighlight()
		res, err := index.Search(req)
		if err != nil {
			panic(err)
		}
		fmt.Println(prettify(res))
	}

	// Output:
	// [{"id":"1","score":0.27650412875470115}]
	// [{"id":"2","score":0.27650412875470115}]
	// [{"id":"3","score":0.7027325540540822}]
}