Merge branch 'master' into apply-make-fmt

Author: ndyakov

commands.go

@@ -155,6 +155,12 @@ func isEmptyValue(v reflect.Value) bool {
 		return v.Float() == 0
 	case reflect.Interface, reflect.Pointer:
 		return v.IsNil()
+	case reflect.Struct:
+		if v.Type() == reflect.TypeOf(time.Time{}) {
+			return v.IsZero()
+		}
+		// Only supports the struct time.Time,
+		// subsequent iterations will follow the func Scan support decoder.
 	}
 	return false
 }

commands_test.go

@@ -2577,6 +2577,63 @@ var _ = Describe("Commands", func() {
 				"val2",
 				"val",
 			}))
+
+			type setOmitEmpty struct {
+				Set1 string        `redis:"set1"`
+				Set2 int           `redis:"set2,omitempty"`
+				Set3 time.Duration `redis:"set3,omitempty"`
+				Set4 string        `redis:"set4,omitempty"`
+				Set5 time.Time     `redis:"set5,omitempty"`
+				Set6 *numberStruct `redis:"set6,omitempty"`
+				Set7 numberStruct  `redis:"set7,omitempty"`
+			}
+
+			hSet = client.HSet(ctx, "hash3", &setOmitEmpty{
+				Set1: "val",
+			})
+			Expect(hSet.Err()).NotTo(HaveOccurred())
+			// both set1 and set7 are set
+			// custom struct is not omitted
+			Expect(hSet.Val()).To(Equal(int64(2)))
+
+			hGetAll := client.HGetAll(ctx, "hash3")
+			Expect(hGetAll.Err()).NotTo(HaveOccurred())
+			Expect(hGetAll.Val()).To(Equal(map[string]string{
+				"set1": "val",
+				"set7": `{"Number":0}`,
+			}))
+			var hash3 setOmitEmpty
+			Expect(hGetAll.Scan(&hash3)).NotTo(HaveOccurred())
+			Expect(hash3.Set1).To(Equal("val"))
+			Expect(hash3.Set2).To(Equal(0))
+			Expect(hash3.Set3).To(Equal(time.Duration(0)))
+			Expect(hash3.Set4).To(Equal(""))
+			Expect(hash3.Set5).To(Equal(time.Time{}))
+			Expect(hash3.Set6).To(BeNil())
+			Expect(hash3.Set7).To(Equal(numberStruct{}))
+
+			now := time.Now()
+			hSet = client.HSet(ctx, "hash4", setOmitEmpty{
+				Set1: "val",
+				Set5: now,
+				Set6: &numberStruct{
+					Number: 5,
+				},
+				Set7: numberStruct{
+					Number: 3,
+				},
+			})
+			Expect(hSet.Err()).NotTo(HaveOccurred())
+			Expect(hSet.Val()).To(Equal(int64(4)))
+
+			hGetAll = client.HGetAll(ctx, "hash4")
+			Expect(hGetAll.Err()).NotTo(HaveOccurred())
+			Expect(hGetAll.Val()).To(Equal(map[string]string{
+				"set1": "val",
+				"set5": now.Format(time.RFC3339Nano),
+				"set6": `{"Number":5}`,
+				"set7": `{"Number":3}`,
+			}))
 		})
 
 		It("should HSetNX", func() {
@@ -7618,12 +7675,16 @@ type numberStruct struct {
 	Number int
 }
 
-func (s *numberStruct) MarshalBinary() ([]byte, error) {
-	return json.Marshal(s)
+func (n numberStruct) MarshalBinary() ([]byte, error) {
+	return json.Marshal(n)
+}
+
+func (n *numberStruct) UnmarshalBinary(b []byte) error {
+	return json.Unmarshal(b, n)
 }
 
-func (s *numberStruct) UnmarshalBinary(b []byte) error {
-	return json.Unmarshal(b, s)
+func (n *numberStruct) ScanRedis(str string) error {
+	return json.Unmarshal([]byte(str), n)
 }
 
 func deref(viface interface{}) interface{} {