mirror of
https://gitee.com/milvus-io/milvus.git
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142 lines
3.6 KiB
Go
142 lines
3.6 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package column
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import (
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"encoding/binary"
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"fmt"
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"math"
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"github.com/cockroachdb/errors"
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"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
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"github.com/milvus-io/milvus/client/v2/entity"
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)
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var _ (Column) = (*ColumnSparseFloatVector)(nil)
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type ColumnSparseFloatVector struct {
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ColumnBase
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vectors []entity.SparseEmbedding
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name string
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}
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// Name returns column name.
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func (c *ColumnSparseFloatVector) Name() string {
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return c.name
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}
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// Type returns column FieldType.
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func (c *ColumnSparseFloatVector) Type() entity.FieldType {
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return entity.FieldTypeSparseVector
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}
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// Len returns column values length.
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func (c *ColumnSparseFloatVector) Len() int {
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return len(c.vectors)
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}
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func (c *ColumnSparseFloatVector) Slice(start, end int) Column {
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l := c.Len()
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if start > l {
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start = l
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}
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if end == -1 || end > l {
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end = l
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}
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return &ColumnSparseFloatVector{
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ColumnBase: c.ColumnBase,
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name: c.name,
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vectors: c.vectors[start:end],
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}
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}
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// Get returns value at index as interface{}.
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func (c *ColumnSparseFloatVector) Get(idx int) (interface{}, error) {
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if idx < 0 || idx >= c.Len() {
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return nil, errors.New("index out of range")
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}
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return c.vectors[idx], nil
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}
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// ValueByIdx returns value of the provided index
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// error occurs when index out of range
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func (c *ColumnSparseFloatVector) ValueByIdx(idx int) (entity.SparseEmbedding, error) {
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var r entity.SparseEmbedding // use default value
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if idx < 0 || idx >= c.Len() {
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return r, errors.New("index out of range")
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}
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return c.vectors[idx], nil
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}
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func (c *ColumnSparseFloatVector) FieldData() *schemapb.FieldData {
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fd := &schemapb.FieldData{
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Type: schemapb.DataType_SparseFloatVector,
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FieldName: c.name,
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}
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dim := int(0)
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data := make([][]byte, 0, len(c.vectors))
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for _, vector := range c.vectors {
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row := make([]byte, 8*vector.Len())
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for idx := 0; idx < vector.Len(); idx++ {
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pos, value, _ := vector.Get(idx)
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binary.LittleEndian.PutUint32(row[idx*8:], pos)
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binary.LittleEndian.PutUint32(row[idx*8+4:], math.Float32bits(value))
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}
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data = append(data, row)
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if vector.Dim() > dim {
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dim = vector.Dim()
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}
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}
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fd.Field = &schemapb.FieldData_Vectors{
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Vectors: &schemapb.VectorField{
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Dim: int64(dim),
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Data: &schemapb.VectorField_SparseFloatVector{
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SparseFloatVector: &schemapb.SparseFloatArray{
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Dim: int64(dim),
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Contents: data,
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},
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},
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},
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}
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return fd
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}
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func (c *ColumnSparseFloatVector) AppendValue(i interface{}) error {
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v, ok := i.(entity.SparseEmbedding)
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if !ok {
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return fmt.Errorf("invalid type, expect SparseEmbedding interface, got %T", i)
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}
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c.vectors = append(c.vectors, v)
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return nil
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}
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func (c *ColumnSparseFloatVector) Data() []entity.SparseEmbedding {
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return c.vectors
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}
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func NewColumnSparseVectors(name string, values []entity.SparseEmbedding) *ColumnSparseFloatVector {
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return &ColumnSparseFloatVector{
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name: name,
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vectors: values,
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}
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}
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