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Remove camel case tokenization from repo indexer (#7733) 

* Make repository indexer tokenize by camel case selectable

* Revert "Make repository indexer tokenize by camel case selectable"

This reverts commit a8d4e40af56ffeab9c040a13e01b9e0d5487bd3b.

* Remove app.ini setting, permanently remove camel case tokenizer

* Increase repoIndexerLatestVersion to force indexes to be rebuilt

* Changes introduced by the commmand make vendor
This commit is contained in:
guillep2k 2019-08-06 01:38:16 -03:00 committed by Lauris BH
parent 026696b87a
commit 2594693a46
5 changed files with 2 additions and 278 deletions
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5
modules/indexer/repo.go
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@ -12,7 +12,6 @@ import (
"github.com/blevesearch/bleve"
"github.com/blevesearch/bleve/analysis/analyzer/custom"
"github.com/blevesearch/bleve/analysis/token/camelcase"
"github.com/blevesearch/bleve/analysis/token/lowercase"
"github.com/blevesearch/bleve/analysis/token/unique"
"github.com/blevesearch/bleve/analysis/tokenizer/unicode"
@ -24,7 +23,7 @@ const (
repoIndexerAnalyzer = "repoIndexerAnalyzer"
repoIndexerDocType = "repoIndexerDocType"
repoIndexerLatestVersion = 1
repoIndexerLatestVersion = 2
)
// repoIndexer (thread-safe) index for repository contents
@ -111,7 +110,7 @@ func createRepoIndexer(path string, latestVersion int) error {
"type": custom.Name,
"char_filters": []string{},
"tokenizer": unicode.Name,
"token_filters": []string{unicodeNormalizeName, camelcase.Name, lowercase.Name, unique.Name},
"token_filters": []string{unicodeNormalizeName, lowercase.Name, unique.Name},
}); err != nil {
return err
}

78
vendor/github.com/blevesearch/bleve/analysis/token/camelcase/camelcase.go generated vendored
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@ -1,78 +0,0 @@
// Copyright (c) 2016 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 camelcase
import (
"bytes"
"unicode/utf8"
"github.com/blevesearch/bleve/analysis"
"github.com/blevesearch/bleve/registry"
)
const Name = "camelCase"
// CamelCaseFilter splits a given token into a set of tokens where each resulting token
// falls into one the following classes:
// 1) Upper case followed by lower case letters.
// Terminated by a number, an upper case letter, and a non alpha-numeric symbol.
// 2) Upper case followed by upper case letters.
// Terminated by a number, an upper case followed by a lower case letter, and a non alpha-numeric symbol.
// 3) Lower case followed by lower case letters.
// Terminated by a number, an upper case letter, and a non alpha-numeric symbol.
// 4) Number followed by numbers.
// Terminated by a letter, and a non alpha-numeric symbol.
// 5) Non alpha-numeric symbol followed by non alpha-numeric symbols.
// Terminated by a number, and a letter.
//
// It does a one-time sequential pass over an input token, from left to right.
// The scan is greedy and generates the longest substring that fits into one of the classes.
//
// See the test file for examples of classes and their parsings.
type CamelCaseFilter struct{}
func NewCamelCaseFilter() *CamelCaseFilter {
return &CamelCaseFilter{}
}
func (f *CamelCaseFilter) Filter(input analysis.TokenStream) analysis.TokenStream {
rv := make(analysis.TokenStream, 0, len(input))
nextPosition := 1
for _, token := range input {
runeCount := utf8.RuneCount(token.Term)
runes := bytes.Runes(token.Term)
p := NewParser(runeCount, nextPosition, token.Start)
for i := 0; i < runeCount; i++ {
if i+1 >= runeCount {
p.Push(runes[i], nil)
} else {
p.Push(runes[i], &runes[i+1])
}
}
rv = append(rv, p.FlushTokens()...)
nextPosition = p.NextPosition()
}
return rv
}
func CamelCaseFilterConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.TokenFilter, error) {
return NewCamelCaseFilter(), nil
}
func init() {
registry.RegisterTokenFilter(Name, CamelCaseFilterConstructor)
}

109
vendor/github.com/blevesearch/bleve/analysis/token/camelcase/parser.go generated vendored
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@ -1,109 +0,0 @@
// Copyright (c) 2016 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 camelcase
import (
"github.com/blevesearch/bleve/analysis"
)
func (p *Parser) buildTokenFromTerm(buffer []rune) *analysis.Token {
term := analysis.BuildTermFromRunes(buffer)
token := &analysis.Token{
Term: term,
Position: p.position,
Start: p.index,
End: p.index + len(term),
}
p.position++
p.index += len(term)
return token
}
// Parser accepts a symbol and passes it to the current state (representing a class).
// The state can accept it (and accumulate it). Otherwise, the parser creates a new state that
// starts with the pushed symbol.
//
// Parser accumulates a new resulting token every time it switches state.
// Use FlushTokens() to get the results after the last symbol was pushed.
type Parser struct {
bufferLen int
buffer []rune
current State
tokens []*analysis.Token
position int
index int
}
func NewParser(length, position, index int) *Parser {
return &Parser{
bufferLen: length,
buffer: make([]rune, 0, length),
tokens: make([]*analysis.Token, 0, length),
position: position,
index: index,
}
}
func (p *Parser) Push(sym rune, peek *rune) {
if p.current == nil {
// the start of parsing
p.current = p.NewState(sym)
p.buffer = append(p.buffer, sym)
} else if p.current.Member(sym, peek) {
// same state, just accumulate
p.buffer = append(p.buffer, sym)
} else {
// the old state is no more, thus convert the buffer
p.tokens = append(p.tokens, p.buildTokenFromTerm(p.buffer))
// let the new state begin
p.current = p.NewState(sym)
p.buffer = make([]rune, 0, p.bufferLen)
p.buffer = append(p.buffer, sym)
}
}
// Note. States have to have different starting symbols.
func (p *Parser) NewState(sym rune) State {
var found State
found = &LowerCaseState{}
if found.StartSym(sym) {
return found
}
found = &UpperCaseState{}
if found.StartSym(sym) {
return found
}
found = &NumberCaseState{}
if found.StartSym(sym) {
return found
}
return &NonAlphaNumericCaseState{}
}
func (p *Parser) FlushTokens() []*analysis.Token {
p.tokens = append(p.tokens, p.buildTokenFromTerm(p.buffer))
return p.tokens
}
func (p *Parser) NextPosition() int {
return p.position
}

87
vendor/github.com/blevesearch/bleve/analysis/token/camelcase/states.go generated vendored
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@ -1,87 +0,0 @@
// Copyright (c) 2016 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 camelcase
import (
"unicode"
)
// States codify the classes that the parser recognizes.
type State interface {
// is _sym_ the start character
StartSym(sym rune) bool
// is _sym_ a member of a class.
// peek, the next sym on the tape, can also be used to determine a class.
Member(sym rune, peek *rune) bool
}
type LowerCaseState struct{}
func (s *LowerCaseState) Member(sym rune, peek *rune) bool {
return unicode.IsLower(sym)
}
func (s *LowerCaseState) StartSym(sym rune) bool {
return s.Member(sym, nil)
}
type UpperCaseState struct {
startedCollecting bool // denotes that the start character has been read
collectingUpper bool // denotes if this is a class of all upper case letters
}
func (s *UpperCaseState) Member(sym rune, peek *rune) bool {
if !(unicode.IsLower(sym) || unicode.IsUpper(sym)) {
return false
}
if peek != nil && unicode.IsUpper(sym) && unicode.IsLower(*peek) {
return false
}
if !s.startedCollecting {
// now we have to determine if upper-case letters are collected.
s.startedCollecting = true
s.collectingUpper = unicode.IsUpper(sym)
return true
}
return s.collectingUpper == unicode.IsUpper(sym)
}
func (s *UpperCaseState) StartSym(sym rune) bool {
return unicode.IsUpper(sym)
}
type NumberCaseState struct{}
func (s *NumberCaseState) Member(sym rune, peek *rune) bool {
return unicode.IsNumber(sym)
}
func (s *NumberCaseState) StartSym(sym rune) bool {
return s.Member(sym, nil)
}
type NonAlphaNumericCaseState struct{}
func (s *NonAlphaNumericCaseState) Member(sym rune, peek *rune) bool {
return !unicode.IsLower(sym) && !unicode.IsUpper(sym) && !unicode.IsNumber(sym)
}
func (s *NonAlphaNumericCaseState) StartSym(sym rune) bool {
return s.Member(sym, nil)
}

1
vendor/modules.txt vendored
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@ -24,7 +24,6 @@ github.com/beorn7/perks/quantile
# github.com/blevesearch/bleve v0.0.0-20190214220507-05d86ea8f6e3
github.com/blevesearch/bleve
github.com/blevesearch/bleve/analysis/analyzer/custom
github.com/blevesearch/bleve/analysis/token/camelcase
github.com/blevesearch/bleve/analysis/token/lowercase
github.com/blevesearch/bleve/analysis/token/unicodenorm
github.com/blevesearch/bleve/analysis/token/unique