support Filter in searcher like elasticsearch

[liulhdarks]

How to implement an elasticsearch-like filter query statement that can query specified fields without calculating scores

{
  "query": { 
    "bool": { 
      "must": [
        { "match": { "title":   "Search"        }},
        { "match": { "content": "Elasticsearch" }}
      ],
      "filter": [ 
        { "term":  { "status": "published" }},
        { "range": { "publish_date": { "gte": "2015-01-01" }}}
      ]
    }
  }
}

[blamoo]

use BooleanQuery:
https://pkg.go.dev/github.com/blevesearch/bleve/v2#NewBooleanQuery
there is even an usage example in the docs:

must := NewMatchQuery("one")
mustNot := NewMatchQuery("great")
query := NewBooleanQuery()
query.AddMust(must)
query.AddMustNot(mustNot)
searchRequest := NewSearchRequest(query)
searchResults, err := exampleIndex.Search(searchRequest)
if err != nil {
	panic(err)
}

fmt.Println(searchResults.Hits[0].ID)