parent
649a4999a1
commit
d84187fd24
@ -0,0 +1,41 @@
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// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package apostrophe_filter
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import (
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"bytes"
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"github.com/couchbaselabs/bleve/analysis"
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)
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const RIGHT_SINGLE_QUOTATION_MARK = "’"
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const APOSTROPHE = "'"
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const APOSTROPHES = APOSTROPHE + RIGHT_SINGLE_QUOTATION_MARK
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type ApostropheFilter struct{}
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func NewApostropheFilter() *ApostropheFilter {
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return &ApostropheFilter{}
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}
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func (s *ApostropheFilter) Filter(input analysis.TokenStream) analysis.TokenStream {
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rv := make(analysis.TokenStream, 0)
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for _, token := range input {
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firstApostrophe := bytes.IndexAny(token.Term, APOSTROPHES)
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if firstApostrophe >= 0 {
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// found an apostrophe
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token.Term = token.Term[0:firstApostrophe]
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}
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rv = append(rv, token)
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}
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return rv
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}
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@ -0,0 +1,93 @@
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// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package apostrophe_filter
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import (
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"reflect"
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"testing"
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"github.com/couchbaselabs/bleve/analysis"
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)
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func TestApostropheFilter(t *testing.T) {
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tests := []struct {
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input analysis.TokenStream
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output analysis.TokenStream
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}{
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{
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("Türkiye'de"),
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("Türkiye"),
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},
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},
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},
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{
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("2003'te"),
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("2003"),
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},
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},
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},
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{
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("Van"),
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("Van"),
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},
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},
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},
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{
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("Gölü'nü"),
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("Gölü"),
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},
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},
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},
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{
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("gördüm"),
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("gördüm"),
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},
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},
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},
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}
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for _, test := range tests {
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apostropheFilter := NewApostropheFilter()
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actual := apostropheFilter.Filter(test.input)
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if !reflect.DeepEqual(actual, test.output) {
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t.Errorf("expected %s, got %s", test.output[0].Term, actual[0].Term)
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}
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}
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}
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@ -23,6 +23,7 @@ import (
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"github.com/couchbaselabs/bleve/analysis/tokenizers/single_token"
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"github.com/couchbaselabs/bleve/analysis/tokenizers/unicode_word_boundary"
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"github.com/couchbaselabs/bleve/analysis/token_filters/apostrophe_filter"
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"github.com/couchbaselabs/bleve/analysis/token_filters/cld2"
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"github.com/couchbaselabs/bleve/analysis/token_filters/elision_filter"
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"github.com/couchbaselabs/bleve/analysis/token_filters/length_filter"
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@ -179,6 +180,9 @@ func init() {
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Config.Analysis.TokenFilters["short"] = length_filter.NewLengthFilter(3, -1)
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Config.Analysis.TokenFilters["long"] = length_filter.NewLengthFilter(-1, 255)
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Config.Analysis.TokenFilters["to_lower"] = lower_case_filter.NewLowerCaseFilter()
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Config.Analysis.TokenFilters["apostrophe"] = apostrophe_filter.NewApostropheFilter()
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// register stemmer filters
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Config.Analysis.TokenFilters["stemmer_da"] = stemmer_filter.MustNewStemmerFilter("danish")
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Config.Analysis.TokenFilters["stemmer_nl"] = stemmer_filter.MustNewStemmerFilter("dutch")
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Config.Analysis.TokenFilters["stemmer_en"] = stemmer_filter.MustNewStemmerFilter("english")
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@ -309,7 +313,7 @@ func init() {
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Config.Analysis.Analyzers["es"] = spanishAnalyzer
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swedishAnalyzer := Config.MustBuildNewAnalyzer([]string{}, "unicode", []string{"to_lower", "stop_token_sv", "stemmer_sv"})
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Config.Analysis.Analyzers["sv"] = swedishAnalyzer
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turkishAnalyzer := Config.MustBuildNewAnalyzer([]string{}, "unicode", []string{"to_lower", "stop_token_tr", "stemmer_tr"})
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turkishAnalyzer := Config.MustBuildNewAnalyzer([]string{}, "unicode", []string{"apostrophe", "to_lower", "stop_token_tr", "stemmer_tr"})
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Config.Analysis.Analyzers["tr"] = turkishAnalyzer
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thaiAnalyzer := Config.MustBuildNewAnalyzer([]string{}, "unicode_th", []string{"to_lower", "stop_token_th"})
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Config.Analysis.Analyzers["th"] = thaiAnalyzer
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