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bv.go
61 lines (54 loc) · 1.38 KB
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bv.go
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package bv
import (
"encoding/binary"
"time"
"github.com/RoaringBitmap/roaring"
"github.com/deepfabric/beevector/pkg/sdk"
"github.com/deepfabric/vectorsql/pkg/logger"
)
func New(addrs []string, log logger.Log) *bv {
return &bv{sdk.NewClient(addrs, sdk.WithTimeout(5*time.Minute)), log}
}
func (b *bv) Add(xbs []float32, xids []int64) error {
return b.cli.Add(xbs, xids)
}
func (b *bv) Fvectors(n int64, v []float32) (*roaring.Bitmap, []uint64, error) {
_, vs, err := b.cli.Search(n, v, nil, false)
if err != nil {
return nil, nil, err
}
mp, ids := genIds(vs)
return mp, ids, nil
}
func (b *bv) Vectors(n int64, mp *roaring.Bitmap, v []float32) (*roaring.Bitmap, []uint64, error) {
if mp != nil {
data, err := mp.ToBytes()
if err != nil {
return nil, nil, err
}
buf := make([]byte, 11)
buf[0] = 1
num := binary.PutUvarint(buf[1:], uint64(len(data)))
_, vs, err := b.cli.Search(n, v, append(buf[:1+num], data...), false)
if err != nil {
return nil, nil, err
}
mp, ids := genIds(vs)
return mp, ids, nil
}
_, vs, err := b.cli.Search(n, v, nil, false)
if err != nil {
return nil, nil, err
}
mp, ids := genIds(vs)
return mp, ids, nil
}
func genIds(vs []int64) (*roaring.Bitmap, []uint64) {
xs := make([]uint32, len(vs))
ys := make([]uint64, len(vs))
for i, v := range vs {
xs[i] = uint32(v >> 34)
ys[i] = uint64(v)
}
return roaring.BitmapOf(xs...), ys
}