github.com/weaviate/weaviate@v1.24.6/adapters/repos/db/sortby_distances.go (about)

     1  //                           _       _
     2  // __      _____  __ ___   ___  __ _| |_ ___
     3  // \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
     4  //  \ V  V /  __/ (_| |\ V /| | (_| | ||  __/
     5  //   \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
     6  //
     7  //  Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
     8  //
     9  //  CONTACT: hello@weaviate.io
    10  //
    11  
    12  package db
    13  
    14  import (
    15  	"sort"
    16  
    17  	"github.com/weaviate/weaviate/entities/storobj"
    18  )
    19  
    20  type sortByDistances struct {
    21  	objects []*storobj.Object
    22  	scores  []float32
    23  }
    24  
    25  func (sbd *sortByDistances) Len() int {
    26  	return len(sbd.objects)
    27  }
    28  
    29  func (sbd *sortByDistances) Less(i, j int) bool {
    30  	return sbd.scores[i] < sbd.scores[j]
    31  }
    32  
    33  func (sbd *sortByDistances) Swap(i, j int) {
    34  	sbd.scores[i], sbd.scores[j] = sbd.scores[j], sbd.scores[i]
    35  	sbd.objects[i], sbd.objects[j] = sbd.objects[j], sbd.objects[i]
    36  }
    37  
    38  type sortObjectsByDistance struct{}
    39  
    40  func newDistancesSorter() *sortObjectsByDistance {
    41  	return &sortObjectsByDistance{}
    42  }
    43  
    44  func (s *sortObjectsByDistance) sort(objects []*storobj.Object, distances []float32) ([]*storobj.Object, []float32) {
    45  	sbd := &sortByDistances{objects, distances}
    46  	sort.Sort(sbd)
    47  	return sbd.objects, sbd.scores
    48  }