Add support for serializer

Author: ting-lan-wang

oracle/common.go

@@ -79,7 +79,7 @@ func getOracleArrayType(field *schema.Field, values []any) string {
 	case schema.Bytes:
 		return "TABLE OF BLOB"
 	default:
-		return "TABLE OF VARCHAR2(4000)" // Safe default
+		return "TABLE OF " + strings.ToUpper(string(field.DataType))
 	}
 }
 
@@ -110,13 +110,52 @@ func findFieldByDBName(schema *schema.Schema, dbName string) *schema.Field {
 	return nil
 }
 
+// Extra data types to determine the destination type for OUT parameters
+// when using a serializer
+const (
+	Timestamp             schema.DataType = "timestamp"
+	TimestampWithTimeZone schema.DataType = "timestamp with time zone"
+)
+
 // Create typed destination for OUT parameters
 func createTypedDestination(f *schema.Field) interface{} {
 	if f == nil {
 		var s string
 		return &s
 	}
 
+	// If the field has a serializer, the field type may not be directly related to the column type in the database.
+	// In this case, determine the destination type using the field's data type, which is the column type in the database.
+	//  use the data type as the destination type,
+	// because
+	// If the type is declared in the tag,
+	if f.Serializer != nil {
+		dt := strings.ToLower(string(f.DataType))
+		switch schema.DataType(dt) {
+		case schema.Bool:
+			return new(bool)
+		case schema.Uint:
+			return new(uint64)
+		case schema.Int:
+			return new(int64)
+		case schema.Float:
+			return new(float64)
+		case schema.String:
+			return new(string)
+		case Timestamp:
+			fallthrough
+		case TimestampWithTimeZone:
+			fallthrough
+		case schema.Time:
+			return new(time.Time)
+		case schema.Bytes:
+			return new([]byte)
+		default:
+			// Fallback
+			return new(string)
+		}
+	}
+
 	ft := f.FieldType
 	for ft.Kind() == reflect.Ptr {
 		ft = ft.Elem()
@@ -218,6 +257,13 @@ func convertFromOracleToField(value interface{}, field *schema.Field) interface{
 		return nil
 	}
 
+	// Deserialize data into objects when a serializer is used
+	if field.Serializer != nil {
+		serializerField := field.NewValuePool.Get().(sql.Scanner)
+		serializerField.Scan(value)
+		return serializerField
+	}
+
 	targetType := field.FieldType
 	var converted any
 

oracle/update.go

@@ -168,7 +168,6 @@ func checkMissingWhereConditions(db *gorm.DB) {
 					}
 					// Has non-soft-delete equality condition, this is valid
 					hasMeaningfulConditions = true
-					break
 				case clause.IN:
 					// Has IN condition with values, this is valid
 					if len(e.Values) > 0 {
@@ -187,11 +186,9 @@ func checkMissingWhereConditions(db *gorm.DB) {
 					}
 					// Has non-soft-delete expression condition, consider it valid
 					hasMeaningfulConditions = true
-					break
 				case clause.AndConditions, clause.OrConditions:
 					// Complex conditions are likely valid (but we could be more thorough here)
 					hasMeaningfulConditions = true
-					break
 				case clause.Where:
 					// Handle nested WHERE clauses - recursively check their expressions
 					if len(e.Exprs) > 0 {
@@ -208,7 +205,6 @@ func checkMissingWhereConditions(db *gorm.DB) {
 				default:
 					// Unknown condition types - assume they're meaningful for safety
 					hasMeaningfulConditions = true
-					break
 				}
 
 				// If we found meaningful conditions, we can stop checking

tests/serializer_test.go

@@ -60,8 +60,8 @@ type SerializerStruct struct {
 	Roles3                 *Roles                 `gorm:"serializer:json;not null"`
 	Contracts              map[string]interface{} `gorm:"serializer:json"`
 	JobInfo                Job                    `gorm:"type:bytes;serializer:gob"`
-	CreatedTime            int64                  `gorm:"serializer:unixtime;type:timestamp"` // store time in db, use int as field type
-	UpdatedTime            *int64                 `gorm:"serializer:unixtime;type:timestamp"` // store time in db, use int as field type
+	CreatedTime            int64                  `gorm:"serializer:unixtime;type:timestamp with time zone"` // store time in db, use int as field type
+	UpdatedTime            *int64                 `gorm:"serializer:unixtime;type:timestamp with time zone"` // store time in db, use int as field type
 	CustomSerializerString string                 `gorm:"serializer:custom"`
 	EncryptedString        EncryptedString
 }
@@ -122,13 +122,16 @@ func (c *CustomSerializer) Value(ctx context.Context, field *schema.Field, dst r
 }
 
 func TestSerializer(t *testing.T) {
-	schema.RegisterSerializer("custom", NewCustomSerializer("hello"))
+	if _, ok := schema.GetSerializer("custom"); !ok {
+		schema.RegisterSerializer("custom", NewCustomSerializer("hello"))
+	}
 	DB.Migrator().DropTable(adaptorSerializerModel(&SerializerStruct{}))
 	if err := DB.Migrator().AutoMigrate(adaptorSerializerModel(&SerializerStruct{})); err != nil {
 		t.Fatalf("no error should happen when migrate scanner, valuer struct, got error %v", err)
 	}
 
 	createdAt := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
+	fmt.Printf("======= createdAt1 = %v\n", createdAt.Unix())
 	updatedAt := createdAt.Unix()
 
 	data := SerializerStruct{
@@ -168,8 +171,82 @@ func TestSerializer(t *testing.T) {
 	}
 }
 
+// Issue 48: https://github.com/oracle-samples/gorm-oracle/issues/48
+func TestSerializerBulkInsert(t *testing.T) {
+	if _, ok := schema.GetSerializer("custom"); !ok {
+		schema.RegisterSerializer("custom", NewCustomSerializer("hello"))
+	}
+	DB.Migrator().DropTable(adaptorSerializerModel(&SerializerStruct{}))
+	if err := DB.Migrator().AutoMigrate(adaptorSerializerModel(&SerializerStruct{})); err != nil {
+		t.Fatalf("no error should happen when migrate scanner, valuer struct, got error %v", err)
+	}
+
+	createdAt := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
+	updatedAt := createdAt.Unix()
+
+	data := []SerializerStruct{
+		{
+			Name:            []byte("jinzhu"),
+			Roles:           []string{"r1", "r2"},
+			Roles3:          &Roles{},
+			Contracts:       map[string]interface{}{"name": "jinzhu", "age": 10},
+			EncryptedString: EncryptedString("pass"),
+			CreatedTime:     createdAt.Unix(),
+			UpdatedTime:     &updatedAt,
+			JobInfo: Job{
+				Title:    "programmer",
+				Number:   9920,
+				Location: "Kenmawr",
+				IsIntern: false,
+			},
+			CustomSerializerString: "world",
+		},
+		{
+			Name:            []byte("john"),
+			Roles:           []string{"l1", "l2"},
+			Roles3:          &Roles{},
+			Contracts:       map[string]interface{}{"name": "john", "age": 20},
+			EncryptedString: EncryptedString("pass"),
+			CreatedTime:     createdAt.Unix(),
+			UpdatedTime:     &updatedAt,
+			JobInfo: Job{
+				Title:    "manager",
+				Number:   7710,
+				Location: "Redwood City",
+				IsIntern: false,
+			},
+			CustomSerializerString: "foo",
+		},
+	}
+
+	if err := DB.Create(&data).Error; err != nil {
+		t.Fatalf("failed to create data, got error %v", err)
+	}
+
+	var result []SerializerStruct
+	if err := DB.Find(&result).Error; err != nil {
+		t.Fatalf("failed to query data, got error %v", err)
+	}
+
+	tests.AssertEqual(t, result, data)
+
+	// Update all the "roles" columns to "n1"
+	if err := DB.Model(&SerializerStruct{}).Where("\"roles\" IS NOT NULL").Update("roles", []string{"n1"}).Error; err != nil {
+		t.Fatalf("failed to update data's roles, got error %v", err)
+	}
+
+	var count int64
+	if err := DB.Model(&SerializerStruct{}).Where("\"roles\" = ?", "n1").Count(&count).Error; err != nil {
+		t.Fatalf("failed to query data, got error %v", err)
+	}
+
+	tests.AssertEqual(t, count, 2)
+}
+
 func TestSerializerZeroValue(t *testing.T) {
-	schema.RegisterSerializer("custom", NewCustomSerializer("hello"))
+	if _, ok := schema.GetSerializer("custom"); !ok {
+		schema.RegisterSerializer("custom", NewCustomSerializer("hello"))
+	}
 	DB.Migrator().DropTable(adaptorSerializerModel(&SerializerStruct{}))
 	if err := DB.Migrator().AutoMigrate(adaptorSerializerModel(&SerializerStruct{})); err != nil {
 		t.Fatalf("no error should happen when migrate scanner, valuer struct, got error %v", err)
@@ -200,7 +277,9 @@ func TestSerializerZeroValue(t *testing.T) {
 }
 
 func TestSerializerAssignFirstOrCreate(t *testing.T) {
-	schema.RegisterSerializer("custom", NewCustomSerializer("hello"))
+	if _, ok := schema.GetSerializer("custom"); !ok {
+		schema.RegisterSerializer("custom", NewCustomSerializer("hello"))
+	}
 	DB.Migrator().DropTable(adaptorSerializerModel(&SerializerStruct{}))
 	if err := DB.Migrator().AutoMigrate(adaptorSerializerModel(&SerializerStruct{})); err != nil {
 		t.Fatalf("no error should happen when migrate scanner, valuer struct, got error %v", err)