Remove unique filter from repo indexer analyzer. (#7878)

* Remove unique filter from repo indexer analyzer.

* Bump repoIndexerLatestVersion to 4

* Corrrect fmt

* make vendor to remove unique dependency

modules/indexer/repo.go

@@ -13,7 +13,6 @@ import (
 	"github.com/blevesearch/bleve"
 	"github.com/blevesearch/bleve/analysis/analyzer/custom"
 	"github.com/blevesearch/bleve/analysis/token/lowercase"
-	"github.com/blevesearch/bleve/analysis/token/unique"
 	"github.com/blevesearch/bleve/analysis/tokenizer/unicode"
 	"github.com/blevesearch/bleve/search/query"
 	"github.com/ethantkoenig/rupture"
@@ -23,7 +22,7 @@ const (
 	repoIndexerAnalyzer = "repoIndexerAnalyzer"
 	repoIndexerDocType  = "repoIndexerDocType"
 
-	repoIndexerLatestVersion = 3
+	repoIndexerLatestVersion = 4
 )
 
 // repoIndexer (thread-safe) index for repository contents
@@ -110,7 +109,7 @@ func createRepoIndexer(path string, latestVersion int) error {
 		"type":          custom.Name,
 		"char_filters":  []string{},
 		"tokenizer":     unicode.Name,
-		"token_filters": []string{unicodeNormalizeName, lowercase.Name, unique.Name},
+		"token_filters": []string{unicodeNormalizeName, lowercase.Name},
 	}); err != nil {
 		return err
 	}

vendor/github.com/blevesearch/bleve/analysis/token/unique/unique.go

@@ -1,53 +0,0 @@
-//  Copyright (c) 2018 Couchbase, Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// 		http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package unique
-
-import (
-	"github.com/blevesearch/bleve/analysis"
-	"github.com/blevesearch/bleve/registry"
-)
-
-const Name = "unique"
-
-// UniqueTermFilter retains only the tokens which mark the first occurrence of
-// a term. Tokens whose term appears in a preceding token are dropped.
-type UniqueTermFilter struct{}
-
-func NewUniqueTermFilter() *UniqueTermFilter {
-	return &UniqueTermFilter{}
-}
-
-func (f *UniqueTermFilter) Filter(input analysis.TokenStream) analysis.TokenStream {
-	encounteredTerms := make(map[string]struct{}, len(input)/4)
-	j := 0
-	for _, token := range input {
-		term := string(token.Term)
-		if _, ok := encounteredTerms[term]; ok {
-			continue
-		}
-		encounteredTerms[term] = struct{}{}
-		input[j] = token
-		j++
-	}
-	return input[:j]
-}
-
-func UniqueTermFilterConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.TokenFilter, error) {
-	return NewUniqueTermFilter(), nil
-}
-
-func init() {
-	registry.RegisterTokenFilter(Name, UniqueTermFilterConstructor)
-}

vendor/modules.txt

@@ -26,7 +26,6 @@ github.com/blevesearch/bleve
 github.com/blevesearch/bleve/analysis/analyzer/custom
 github.com/blevesearch/bleve/analysis/token/lowercase
 github.com/blevesearch/bleve/analysis/token/unicodenorm
-github.com/blevesearch/bleve/analysis/token/unique
 github.com/blevesearch/bleve/analysis/tokenizer/unicode
 github.com/blevesearch/bleve/index/upsidedown
 github.com/blevesearch/bleve/mapping