* Added ydb.Param.Range() range iterator (#1852)

Author: asmyasnikov

CHANGELOG.md

@@ -1,3 +1,5 @@
+* Added `ydb.Param.Range()` range iterator
+
 ## v3.115.0
 * Added public package `pkg/xtest` with test helpers
 

internal/params/parameters.go

@@ -8,6 +8,7 @@ import (
 	"github.com/ydb-platform/ydb-go-genproto/protos/Ydb"
 
 	"github.com/ydb-platform/ydb-go-sdk/v3/internal/value"
+	"github.com/ydb-platform/ydb-go-sdk/v3/internal/xiter"
 	"github.com/ydb-platform/ydb-go-sdk/v3/pkg/xstring"
 	"github.com/ydb-platform/ydb-go-sdk/v3/table/types"
 )
@@ -23,11 +24,25 @@ type (
 		value  value.Value
 	}
 	Parameters interface {
+		fmt.Stringer
+
 		ToYDB() (map[string]*Ydb.TypedValue, error)
+		Range() xiter.Seq2[string, value.Value]
 	}
 	Params []*Parameter
 )
 
+func (p *Params) Range() xiter.Seq2[string, value.Value] {
+	return func(yield func(name string, v value.Value) bool) {
+		for _, param := range *p {
+			cont := yield(param.name, param.value)
+			if !cont {
+				return
+			}
+		}
+	}
+}
+
 var _ Parameters = (*Params)(nil)
 
 func Named(name string, value value.Value) *Parameter {

params_map.go

@@ -8,14 +8,24 @@ import (
 
 	"github.com/ydb-platform/ydb-go-sdk/v3/internal/bind"
 	"github.com/ydb-platform/ydb-go-sdk/v3/internal/params"
+	"github.com/ydb-platform/ydb-go-sdk/v3/internal/value"
 	"github.com/ydb-platform/ydb-go-sdk/v3/internal/xerrors"
+	"github.com/ydb-platform/ydb-go-sdk/v3/internal/xiter"
 	"github.com/ydb-platform/ydb-go-sdk/v3/internal/xsql"
 )
 
 type wrongParameters struct {
 	err error
 }
 
+func (p wrongParameters) String() string {
+	panic(p.err)
+}
+
+func (p wrongParameters) Range() xiter.Seq2[string, value.Value] {
+	panic(p.err)
+}
+
 func (p wrongParameters) ToYDB() (map[string]*Ydb.TypedValue, error) {
 	return nil, xerrors.WithStackTrace(p.err)
 }