You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
2.3 KiB
94 lines
2.3 KiB
// Copyright (c) 2015 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 searcher
|
|
|
|
import (
|
|
"github.com/blevesearch/bleve/index"
|
|
"github.com/blevesearch/bleve/search"
|
|
"github.com/blevesearch/bleve/search/scorer"
|
|
)
|
|
|
|
// DocIDSearcher returns documents matching a predefined set of identifiers.
|
|
type DocIDSearcher struct {
|
|
reader index.DocIDReader
|
|
scorer *scorer.ConstantScorer
|
|
count int
|
|
}
|
|
|
|
func NewDocIDSearcher(indexReader index.IndexReader, ids []string, boost float64,
|
|
options search.SearcherOptions) (searcher *DocIDSearcher, err error) {
|
|
|
|
reader, err := indexReader.DocIDReaderOnly(ids)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
scorer := scorer.NewConstantScorer(1.0, boost, options)
|
|
return &DocIDSearcher{
|
|
scorer: scorer,
|
|
reader: reader,
|
|
count: len(ids),
|
|
}, nil
|
|
}
|
|
|
|
func (s *DocIDSearcher) Count() uint64 {
|
|
return uint64(s.count)
|
|
}
|
|
|
|
func (s *DocIDSearcher) Weight() float64 {
|
|
return s.scorer.Weight()
|
|
}
|
|
|
|
func (s *DocIDSearcher) SetQueryNorm(qnorm float64) {
|
|
s.scorer.SetQueryNorm(qnorm)
|
|
}
|
|
|
|
func (s *DocIDSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error) {
|
|
docidMatch, err := s.reader.Next()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if docidMatch == nil {
|
|
return nil, nil
|
|
}
|
|
|
|
docMatch := s.scorer.Score(ctx, docidMatch)
|
|
return docMatch, nil
|
|
}
|
|
|
|
func (s *DocIDSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error) {
|
|
docidMatch, err := s.reader.Advance(ID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if docidMatch == nil {
|
|
return nil, nil
|
|
}
|
|
|
|
docMatch := s.scorer.Score(ctx, docidMatch)
|
|
return docMatch, nil
|
|
}
|
|
|
|
func (s *DocIDSearcher) Close() error {
|
|
return s.reader.Close()
|
|
}
|
|
|
|
func (s *DocIDSearcher) Min() int {
|
|
return 0
|
|
}
|
|
|
|
func (s *DocIDSearcher) DocumentMatchPoolSize() int {
|
|
return 1
|
|
}
|