bleve version is v2.3.7 When using keyword, how to use NewQueryStringQuery to quer

How to use NewQueryStringQuery for precise queries? about bleve HOT 2 CLOSED

springrain commented on June 7, 2024

How to use NewQueryStringQuery for precise queries?

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Comments (2)

abhinavdangeti commented on June 7, 2024

Your sample code is not setting the field for the query string query - which means the engine will look for the criteria in the composite field _all. So mapping.DefaultAnalyzer (standard) is being applied to your search criteria, which converts userId to userid before searching - which is unavailable in your index.

Here's amended code:

package main

import (
	"fmt"
	"os"
	"testing"

	"github.com/blevesearch/bleve/v2"
	"github.com/blevesearch/bleve/v2/analysis/analyzer/keyword"
)

func TestKeyword(t *testing.T) {
	indexName := "testkeyword"
	os.RemoveAll(indexName)
	mapping := bleve.NewIndexMapping()

	mapping.DefaultAnalyzer = keyword.Name
	index, _ := bleve.New(indexName, mapping)
	user := struct {
		Id   string
		Name string
	}{
		Id:   "userId",
		Name: "testkeyword",
	}
	index.Index(user.Id, user)

	termQuery := bleve.NewTermQuery("userId")
	termQuery.SetField("Id")
	termRequest := bleve.NewSearchRequest(termQuery)
	termRequest.Fields = []string{"*"}
	termResult, _ := index.Search(termRequest)
	fmt.Println("termQuery total:", termResult.Total)

	stringQuery := bleve.NewQueryStringQuery("userId")
	stringRequest := bleve.NewSearchRequest(stringQuery)
	stringRequest.Fields = []string{"*"}
	stringResult, _ := index.Search(stringRequest)
	// shouldn't be zero
	fmt.Println("stringQuery total:", stringResult.Total)

}

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springrain commented on June 7, 2024

Thank you very much, you answered my doubts

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