enhance: [GoSDK] Add range & sparse ann param (#39751)

Related to #38846

Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>

client/index/ann_param.go

@@ -32,6 +32,14 @@ func (b baseAnnParam) Params() map[string]any {
 	return b.params
 }
 
+func (b baseAnnParam) WithRadius(radius float64) {
+	b.WithExtraParam("radius", radius)
+}
+
+func (b baseAnnParam) WithRangeFilter(rangeFilter float64) {
+	b.WithExtraParam("range_filter", rangeFilter)
+}
+
 type CustomAnnParam struct {
 	baseAnnParam
 }

client/index/sparse.go

@@ -61,3 +61,19 @@ func NewSparseWANDIndex(metricType MetricType, dropRatio float64) Index {
 		dropRatio: dropRatio,
 	}
 }
+
+type sparseAnnParam struct {
+	baseAnnParam
+}
+
+func NewSparseAnnParam() sparseAnnParam {
+	return sparseAnnParam{
+		baseAnnParam: baseAnnParam{
+			params: make(map[string]any),
+		},
+	}
+}
+
+func (b sparseAnnParam) WithDropRatio(dropRatio float64) {
+	b.WithExtraParam("drop_ratio_search", dropRatio)
+}

tests/go_client/testcases/search_test.go

@@ -1090,7 +1090,6 @@ func TestSearchSparseVectorNotSupported(t *testing.T) {
 }
 
 func TestRangeSearchSparseVector(t *testing.T) {
-	t.Skipf("https://github.com/milvus-io/milvus/issues/38846")
 	ctx := hp.CreateContext(t, time.Second*common.DefaultTimeout*2)
 	mc := createDefaultMilvusClient(ctx, t)
 
@@ -1111,10 +1110,12 @@ func TestRangeSearchSparseVector(t *testing.T) {
 		log.Info("default search", zap.Any("score", res.Scores))
 	}
 
-	radius := 10
-	rangeFilter := 30
+	annParams := index.NewSparseAnnParam()
+	annParams.WithRadius(10)
+	annParams.WithRangeFilter(30)
+	annParams.WithDropRatio(0.2)
 	resRange, errSearch = mc.Search(ctx, client.NewSearchOption(schema.CollectionName, common.DefaultLimit, queryVec).
-		WithSearchParam("drop_ratio_search", "0.2").WithSearchParam("radius", strconv.Itoa(radius)).WithSearchParam("range_filter", strconv.Itoa(rangeFilter)))
+		WithAnnParam(annParams))
 	common.CheckErr(t, errSearch, true)
 	common.CheckErr(t, errSearch, true)
 	require.Len(t, resRange, common.DefaultNq)