a9cb8779c3
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.
89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
// Copyright (c) 2015 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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// DocIDSearcher returns documents matching a predefined set of identifiers.
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type DocIDSearcher struct {
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reader index.DocIDReader
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scorer *scorers.ConstantScorer
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count int
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}
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func NewDocIDSearcher(indexReader index.IndexReader, ids []string, boost float64,
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explain bool) (searcher *DocIDSearcher, err error) {
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reader, err := indexReader.DocIDReaderOnly(ids)
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if err != nil {
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return nil, err
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}
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scorer := scorers.NewConstantScorer(1.0, boost, explain)
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return &DocIDSearcher{
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scorer: scorer,
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reader: reader,
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count: len(ids),
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}, nil
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}
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func (s *DocIDSearcher) Count() uint64 {
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return uint64(s.count)
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}
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func (s *DocIDSearcher) Weight() float64 {
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return s.scorer.Weight()
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}
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func (s *DocIDSearcher) SetQueryNorm(qnorm float64) {
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s.scorer.SetQueryNorm(qnorm)
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}
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func (s *DocIDSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error) {
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docidMatch, err := s.reader.Next()
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if err != nil {
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return nil, err
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}
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if docidMatch == nil {
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return nil, nil
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}
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docMatch := s.scorer.Score(ctx, docidMatch)
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return docMatch, nil
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}
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func (s *DocIDSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error) {
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docidMatch, err := s.reader.Advance(ID)
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if err != nil {
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return nil, err
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}
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if docidMatch == nil {
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return nil, nil
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}
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docMatch := s.scorer.Score(ctx, docidMatch)
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return docMatch, nil
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}
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func (s *DocIDSearcher) Close() error {
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return s.reader.Close()
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}
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func (s *DocIDSearcher) Min() int {
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return 0
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}
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func (s *DocIDSearcher) DocumentMatchPoolSize() int {
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return 1
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}
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