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bleve/analysis/analyzers/detect_lang_analyzer/detect_lang_analyzer.go

45 lines
1.4 KiB
Go

// Copyright (c) 2014 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 detect_lang_analyzer
import (
"github.com/couchbaselabs/bleve/analysis"
"github.com/couchbaselabs/bleve/analysis/token_filters/lower_case_filter"
"github.com/couchbaselabs/bleve/registry"
)
const Name = "detect_lang"
func AnalyzerConstructor(config map[string]interface{}, cache *registry.Cache) (*analysis.Analyzer, error) {
keywordTokenizer, err := cache.TokenizerNamed("single")
if err != nil {
return nil, err
}
toLowerFilter, err := cache.TokenFilterNamed(lower_case_filter.Name)
if err != nil {
return nil, err
}
detectLangFilter, err := cache.TokenFilterNamed("detect_lang")
if err != nil {
return nil, err
}
rv := analysis.Analyzer{
Tokenizer: keywordTokenizer,
TokenFilters: []analysis.TokenFilter{
toLowerFilter,
detectLangFilter,
},
}
return &rv, nil
}
func init() {
registry.RegisterAnalyzer(Name, AnalyzerConstructor)
}