e188fe35f7
instead of separate DocumentMatch/DocumentMatchInternal rules are simple, everything operates on the IndexInternalID field until the results are returned, then ID is set correctly the IndexInternalID field is not exported to JSON
129 lines
3.2 KiB
Go
129 lines
3.2 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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// kept := make([]string, len(ids))
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// copy(kept, ids)
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// sort.Strings(kept)
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//
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// if len(ids) > 0 {
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// var idReader index.DocIDReader
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// endTerm := string(incrementBytes([]byte(kept[len(kept)-1])))
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// idReader, err = indexReader.DocIDReader(kept[0], endTerm)
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// if err != nil {
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// return nil, err
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// }
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// defer func() {
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// if cerr := idReader.Close(); err == nil && cerr != nil {
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// err = cerr
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// }
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// }()
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// j := 0
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// for _, id := range kept {
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// doc, err := idReader.Next()
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// if err != nil {
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// return nil, err
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// }
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// // Non-duplicate match
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// actualDocID := indexReader.FinalizeDocID(doc)
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// if actualDocID == id && (j == 0 || kept[j-1] != id) {
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// kept[j] = id
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// j++
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// }
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// }
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// kept = kept[:j]
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// }
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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(len(s.ids))
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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(preAllocated *search.DocumentMatch) (*search.DocumentMatch, error) {
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// if s.current >= len(s.ids) {
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// return nil, nil
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// }
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// id := s.ids[s.current]
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// s.current++
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// docMatch := s.scorer.Score(id)
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// return docMatch, nil
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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(docidMatch)
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return docMatch, nil
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}
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func (s *DocIDSearcher) Advance(ID index.IndexInternalID, preAllocated *search.DocumentMatch) (*search.DocumentMatch, error) {
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// s.current = sort.SearchStrings(s.ids, ID)
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// return s.Next(preAllocated)
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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(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 nil
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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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