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bleve/search/searchers/search_match_all.go
Marty Schoch 3fd2a64872 BREAKING CHANGE - removed DumpXXX() methods from bleve.Index
The DumpXXX() methods were always documented as internal and
unsupported.  However, now they are being removed from the
public top-level API.  They are still available on the internal
IndexReader, which can be accessed using the Advanced() method.

The DocCount() and DumpXXX() methods on the internal index
have moved to the internal index reader, since they logically
operate on a snapshot of an index.
2016-09-13 12:40:01 -04:00

100 lines
2.4 KiB
Go

// Copyright (c) 2014 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 searchers
import (
"github.com/blevesearch/bleve/index"
"github.com/blevesearch/bleve/search"
"github.com/blevesearch/bleve/search/scorers"
)
type MatchAllSearcher struct {
indexReader index.IndexReader
reader index.DocIDReader
scorer *scorers.ConstantScorer
count uint64
}
func NewMatchAllSearcher(indexReader index.IndexReader, boost float64, explain bool) (*MatchAllSearcher, error) {
reader, err := indexReader.DocIDReaderAll()
if err != nil {
return nil, err
}
count, err := indexReader.DocCount()
if err != nil {
return nil, err
}
scorer := scorers.NewConstantScorer(1.0, boost, explain)
return &MatchAllSearcher{
indexReader: indexReader,
reader: reader,
scorer: scorer,
count: count,
}, nil
}
func (s *MatchAllSearcher) Count() uint64 {
return s.count
}
func (s *MatchAllSearcher) Weight() float64 {
return s.scorer.Weight()
}
func (s *MatchAllSearcher) SetQueryNorm(qnorm float64) {
s.scorer.SetQueryNorm(qnorm)
}
func (s *MatchAllSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error) {
id, err := s.reader.Next()
if err != nil {
return nil, err
}
if id == nil {
return nil, nil
}
// score match
docMatch := s.scorer.Score(ctx, id)
// return doc match
return docMatch, nil
}
func (s *MatchAllSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error) {
id, err := s.reader.Advance(ID)
if err != nil {
return nil, err
}
if id == nil {
return nil, nil
}
// score match
docMatch := s.scorer.Score(ctx, id)
// return doc match
return docMatch, nil
}
func (s *MatchAllSearcher) Close() error {
return s.reader.Close()
}
func (s *MatchAllSearcher) Min() int {
return 0
}
func (s *MatchAllSearcher) DocumentMatchPoolSize() int {
return 1
}