milvus/internal/util/funcutil/count_util.go
Jiquan Long 8139106b51
Feat: count entities by expression (#22765)
Signed-off-by: longjiquan <jiquan.long@zilliz.com>
2023-03-16 19:31:55 +08:00

95 lines
2.4 KiB
Go

package funcutil
import (
"fmt"
"github.com/milvus-io/milvus-proto/go-api/milvuspb"
"github.com/milvus-io/milvus-proto/go-api/commonpb"
"github.com/milvus-io/milvus-proto/go-api/schemapb"
"github.com/milvus-io/milvus/internal/proto/internalpb"
"github.com/milvus-io/milvus/internal/proto/segcorepb"
)
func CntOfInternalResult(res *internalpb.RetrieveResults) (int64, error) {
if len(res.GetFieldsData()) != 1 {
return 0, fmt.Errorf("internal count result should only have one column")
}
f := res.GetFieldsData()[0]
return CntOfFieldData(f)
}
func CntOfSegCoreResult(res *segcorepb.RetrieveResults) (int64, error) {
if len(res.GetFieldsData()) != 1 {
return 0, fmt.Errorf("segcore count result should only have one column")
}
f := res.GetFieldsData()[0]
return CntOfFieldData(f)
}
func CntOfFieldData(f *schemapb.FieldData) (int64, error) {
scalars := f.GetScalars()
if scalars == nil {
return 0, fmt.Errorf("count result should be scalar")
}
data := scalars.GetLongData()
if data == nil {
return 0, fmt.Errorf("count result should be int64 data")
}
if len(data.GetData()) != 1 {
return 0, fmt.Errorf("count result shoud only have one row")
}
return data.GetData()[0], nil
}
func WrapCntToInternalResult(cnt int64) *internalpb.RetrieveResults {
return &internalpb.RetrieveResults{
Status: &commonpb.Status{},
FieldsData: []*schemapb.FieldData{WrapCntToFieldData(cnt)},
}
}
func WrapCntToSegCoreResult(cnt int64) *segcorepb.RetrieveResults {
return &segcorepb.RetrieveResults{
Ids: nil,
Offset: nil,
FieldsData: []*schemapb.FieldData{WrapCntToFieldData(cnt)},
}
}
func WrapCntToFieldData(cnt int64) *schemapb.FieldData {
return &schemapb.FieldData{
Type: schemapb.DataType_Int64,
FieldName: "count(*)",
Field: &schemapb.FieldData_Scalars{
Scalars: &schemapb.ScalarField{
Data: &schemapb.ScalarField_LongData{
LongData: &schemapb.LongArray{
Data: []int64{cnt},
},
},
},
},
FieldId: 0,
}
}
func WrapCntToQueryResults(cnt int64) *milvuspb.QueryResults {
return &milvuspb.QueryResults{
Status: &commonpb.Status{},
FieldsData: []*schemapb.FieldData{WrapCntToFieldData(cnt)},
CollectionName: "",
}
}
func CntOfQueryResults(res *milvuspb.QueryResults) (int64, error) {
if len(res.GetFieldsData()) != 1 {
return 0, fmt.Errorf("milvus count result should only have one column")
}
f := res.GetFieldsData()[0]
return CntOfFieldData(f)
}