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default_limit_reducer.go
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/
default_limit_reducer.go
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package proxy
import (
"context"
"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
"github.com/milvus-io/milvus/internal/proto/internalpb"
"github.com/milvus-io/milvus/pkg/common"
"github.com/milvus-io/milvus/pkg/util/merr"
"github.com/milvus-io/milvus/pkg/util/typeutil"
)
type defaultLimitReducer struct {
ctx context.Context
req *internalpb.RetrieveRequest
params *queryParams
schema *schemapb.CollectionSchema
collectionName string
}
func (r *defaultLimitReducer) Reduce(results []*internalpb.RetrieveResults) (*milvuspb.QueryResults, error) {
res, err := reduceRetrieveResultsAndFillIfEmpty(r.ctx, results, r.params, r.req.GetOutputFieldsId(), r.schema)
if err != nil {
return nil, err
}
if err := r.afterReduce(res); err != nil {
return nil, err
}
return res, nil
}
func (r *defaultLimitReducer) afterReduce(result *milvuspb.QueryResults) error {
collectionName := r.collectionName
schema := r.schema
outputFieldsID := r.req.GetOutputFieldsId()
result.CollectionName = collectionName
var err error
for i := 0; i < len(result.GetFieldsData()); i++ {
// drop ts column
if outputFieldsID[i] == common.TimeStampField {
result.FieldsData = append(result.FieldsData[:i], result.FieldsData[(i+1):]...)
outputFieldsID = append(outputFieldsID[:i], outputFieldsID[i+1:]...)
i--
continue
}
field := typeutil.GetField(schema, outputFieldsID[i])
if field == nil {
err = merr.WrapErrFieldNotFound(outputFieldsID[i])
break
}
if result.FieldsData[i] == nil {
result.FieldsData[i], err = typeutil.GenEmptyFieldData(field)
if err != nil {
break
}
continue
}
result.FieldsData[i].FieldName = field.GetName()
result.FieldsData[i].FieldId = field.GetFieldID()
result.FieldsData[i].Type = field.GetDataType()
result.FieldsData[i].IsDynamic = field.GetIsDynamic()
}
result.Status = merr.Status(err)
return err
}
func newDefaultLimitReducer(ctx context.Context, params *queryParams, req *internalpb.RetrieveRequest, schema *schemapb.CollectionSchema, collectionName string) *defaultLimitReducer {
return &defaultLimitReducer{
ctx: ctx,
req: req,
params: params,
schema: schema,
collectionName: collectionName,
}
}