gitea/vendor/github.com/blevesearch/bleve/search/scorer/scorer_conjunction.go

73 lines
2.0 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 scorer
import (
"reflect"
"github.com/blevesearch/bleve/search"
"github.com/blevesearch/bleve/size"
)
var reflectStaticSizeConjunctionQueryScorer int
func init() {
var cqs ConjunctionQueryScorer
reflectStaticSizeConjunctionQueryScorer = int(reflect.TypeOf(cqs).Size())
}
type ConjunctionQueryScorer struct {
options search.SearcherOptions
}
func (s *ConjunctionQueryScorer) Size() int {
return reflectStaticSizeConjunctionQueryScorer + size.SizeOfPtr
}
func NewConjunctionQueryScorer(options search.SearcherOptions) *ConjunctionQueryScorer {
return &ConjunctionQueryScorer{
options: options,
}
}
func (s *ConjunctionQueryScorer) Score(ctx *search.SearchContext, constituents []*search.DocumentMatch) *search.DocumentMatch {
var sum float64
var childrenExplanations []*search.Explanation
if s.options.Explain {
childrenExplanations = make([]*search.Explanation, len(constituents))
}
for i, docMatch := range constituents {
sum += docMatch.Score
if s.options.Explain {
childrenExplanations[i] = docMatch.Expl
}
}
newScore := sum
var newExpl *search.Explanation
if s.options.Explain {
newExpl = &search.Explanation{Value: sum, Message: "sum of:", Children: childrenExplanations}
}
// reuse constituents[0] as the return value
rv := constituents[0]
rv.Score = newScore
rv.Expl = newExpl
rv.FieldTermLocations = search.MergeFieldTermLocations(
rv.FieldTermLocations, constituents[1:])
return rv
}