![Steve Yen](/assets/img/avatar_default.png)
From diagnosing a recent issue where the termSearchersFinished stats were incorrectly tracked, I ended up scouring the Close() / cleanup codepaths. This change takes more care in Close()'ing child searchers, especially in error situations. This can be important to allow underlying kvstore's to release resources.
106 lines
2.6 KiB
Go
106 lines
2.6 KiB
Go
// 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 searchers
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import (
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"github.com/blevesearch/bleve/index"
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"github.com/blevesearch/bleve/search"
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"github.com/blevesearch/bleve/search/scorers"
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)
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type TermSearcher struct {
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indexReader index.IndexReader
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term string
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field string
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reader index.TermFieldReader
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scorer *scorers.TermQueryScorer
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tfd index.TermFieldDoc
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explain bool
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}
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func NewTermSearcher(indexReader index.IndexReader, term string, field string, boost float64, explain bool) (*TermSearcher, error) {
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reader, err := indexReader.TermFieldReader([]byte(term), field, true, true, true)
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if err != nil {
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return nil, err
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}
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count, err := indexReader.DocCount()
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if err != nil {
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_ = reader.Close()
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return nil, err
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}
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scorer := scorers.NewTermQueryScorer(term, field, boost, count, reader.Count(), explain)
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return &TermSearcher{
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indexReader: indexReader,
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term: term,
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field: field,
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explain: explain,
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reader: reader,
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scorer: scorer,
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}, nil
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}
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func (s *TermSearcher) Count() uint64 {
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return s.reader.Count()
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}
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func (s *TermSearcher) Weight() float64 {
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return s.scorer.Weight()
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}
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func (s *TermSearcher) SetQueryNorm(qnorm float64) {
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s.scorer.SetQueryNorm(qnorm)
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}
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func (s *TermSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error) {
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termMatch, err := s.reader.Next(s.tfd.Reset())
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if err != nil {
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return nil, err
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}
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if termMatch == nil {
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return nil, nil
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}
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// score match
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docMatch := s.scorer.Score(ctx, termMatch)
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// return doc match
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return docMatch, nil
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}
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func (s *TermSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error) {
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termMatch, err := s.reader.Advance(ID, s.tfd.Reset())
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if err != nil {
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return nil, err
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}
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if termMatch == nil {
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return nil, nil
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}
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// score match
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docMatch := s.scorer.Score(ctx, termMatch)
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// return doc match
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return docMatch, nil
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}
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func (s *TermSearcher) Close() error {
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return s.reader.Close()
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}
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func (s *TermSearcher) Min() int {
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return 0
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}
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func (s *TermSearcher) DocumentMatchPoolSize() int {
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return 1
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}
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