63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package keyword
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import (
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"fmt"
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"github.com/blevesearch/bleve/v2/analysis"
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"github.com/blevesearch/bleve/v2/registry"
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)
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const Name = "keyword_marker"
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type KeyWordMarkerFilter struct {
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keyWords analysis.TokenMap
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}
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func NewKeyWordMarkerFilter(keyWords analysis.TokenMap) *KeyWordMarkerFilter {
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return &KeyWordMarkerFilter{
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keyWords: keyWords,
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}
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}
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func (f *KeyWordMarkerFilter) Filter(input analysis.TokenStream) analysis.TokenStream {
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for _, token := range input {
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_, isKeyWord := f.keyWords[string(token.Term)]
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if isKeyWord {
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token.KeyWord = true
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}
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}
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return input
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}
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func KeyWordMarkerFilterConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.TokenFilter, error) {
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keywordsTokenMapName, ok := config["keywords_token_map"].(string)
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if !ok {
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return nil, fmt.Errorf("must specify keywords_token_map")
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}
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keywordsTokenMap, err := cache.TokenMapNamed(keywordsTokenMapName)
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if err != nil {
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return nil, fmt.Errorf("error building keyword marker filter: %v", err)
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}
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return NewKeyWordMarkerFilter(keywordsTokenMap), nil
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}
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func init() {
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err := registry.RegisterTokenFilter(Name, KeyWordMarkerFilterConstructor)
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if err != nil {
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panic(err)
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}
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}
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