Support merge batch data some having primary values

callbacks/associations.go

@@ -52,21 +52,19 @@ func SaveBeforeAssociations(db *gorm.DB) {
 					obj := db.Statement.ReflectValue.Index(i)
 					if _, zero := rel.Field.ValueOf(obj); !zero { // check belongs to relation value
 						rv := rel.Field.ReflectValueOf(obj) // relation reflect value
-						if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(rv); isZero {
 						objs = append(objs, obj)
 						if isPtr {
 							elems = reflect.Append(elems, rv)
 						} else {
 							elems = reflect.Append(elems, rv.Addr())
 						}
-						} else {
-							setupReferences(obj, rv)
-						}
 					}
 				}
 
 				if elems.Len() > 0 {
-					if db.AddError(db.Session(&gorm.Session{}).Create(elems.Interface()).Error) == nil {
+					if db.AddError(db.Session(&gorm.Session{}).Clauses(clause.OnConflict{
+						DoNothing: true,
+					}).Create(elems.Interface()).Error) == nil {
 						for i := 0; i < elems.Len(); i++ {
 							setupReferences(objs[i], elems.Index(i))
 						}
@@ -79,14 +77,15 @@ func SaveBeforeAssociations(db *gorm.DB) {
 						rv = rv.Addr()
 					}
 
-					if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(rv); isZero {
+					if db.AddError(db.Session(&gorm.Session{}).Clauses(clause.OnConflict{
-						db.Session(&gorm.Session{}).Create(rv.Interface())
+						DoNothing: true,
-					}
+					}).Create(rv.Interface()).Error) == nil {
 						setupReferences(db.Statement.ReflectValue, rv)
 					}
 				}
 			}
 		}
+	}
 }
 
 func SaveAfterAssociations(db *gorm.DB) {
@@ -130,16 +129,20 @@ func SaveAfterAssociations(db *gorm.DB) {
 							}
 						}
 
-						if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(rv); isZero {
 						elems = reflect.Append(elems, rv)
-						} else {
-							db.Session(&gorm.Session{}).Save(rv.Addr().Interface())
-						}
 					}
 				}
 
 				if elems.Len() > 0 {
-					db.Session(&gorm.Session{}).Create(elems.Interface())
+					assignmentColumns := []string{}
+					for _, ref := range rel.References {
+						assignmentColumns = append(assignmentColumns, ref.ForeignKey.DBName)
+					}
+
+					db.Session(&gorm.Session{}).Clauses(clause.OnConflict{
+						Columns:   []clause.Column{{Name: rel.FieldSchema.PrioritizedPrimaryField.DBName}},
+						DoUpdates: clause.AssignmentColumns(assignmentColumns),
+					}).Create(elems.Interface())
 				}
 			case reflect.Struct:
 				if _, zero := rel.Field.ValueOf(db.Statement.ReflectValue); !zero {
@@ -148,6 +151,7 @@ func SaveAfterAssociations(db *gorm.DB) {
 						f = f.Addr()
 					}
 
+					assignmentColumns := []string{}
 					for _, ref := range rel.References {
 						if ref.OwnPrimaryKey {
 							fv, _ := ref.PrimaryKey.ValueOf(db.Statement.ReflectValue)
@@ -155,13 +159,13 @@ func SaveAfterAssociations(db *gorm.DB) {
 						} else if ref.PrimaryValue != "" {
 							ref.ForeignKey.Set(f, ref.PrimaryValue)
 						}
+						assignmentColumns = append(assignmentColumns, ref.ForeignKey.DBName)
 					}
 
-					if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(f); isZero {
+					db.Session(&gorm.Session{}).Clauses(clause.OnConflict{
-						db.Session(&gorm.Session{}).Create(f.Interface())
+						Columns:   []clause.Column{{Name: rel.FieldSchema.PrioritizedPrimaryField.DBName}},
-					} else {
+						DoUpdates: clause.AssignmentColumns(assignmentColumns),
-						db.Session(&gorm.Session{}).Save(f.Interface())
+					}).Create(f.Interface())
-					}
 				}
 			}
 		}
@@ -193,15 +197,11 @@ func SaveAfterAssociations(db *gorm.DB) {
 							}
 						}
 
-						if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(elem); isZero {
 						if isPtr {
 							elems = reflect.Append(elems, elem)
 						} else {
 							elems = reflect.Append(elems, elem.Addr())
 						}
-						} else {
-							db.Session(&gorm.Session{}).Save(elem.Addr().Interface())
-						}
 					}
 				}
 			}
@@ -216,7 +216,15 @@ func SaveAfterAssociations(db *gorm.DB) {
 			}
 
 			if elems.Len() > 0 {
-				db.Session(&gorm.Session{}).Create(elems.Interface())
+				assignmentColumns := []string{}
+				for _, ref := range rel.References {
+					assignmentColumns = append(assignmentColumns, ref.ForeignKey.DBName)
+				}
+
+				db.Session(&gorm.Session{}).Clauses(clause.OnConflict{
+					Columns:   []clause.Column{{Name: rel.FieldSchema.PrioritizedPrimaryField.DBName}},
+					DoUpdates: clause.AssignmentColumns(assignmentColumns),
+				}).Create(elems.Interface())
 			}
 		}
 
@@ -258,16 +266,12 @@ func SaveAfterAssociations(db *gorm.DB) {
 					for i := 0; i < f.Len(); i++ {
 						elem := f.Index(i)
 
-						if _, isZero := rel.FieldSchema.PrioritizedPrimaryField.ValueOf(elem); isZero {
 						objs = append(objs, v)
 						if isPtr {
 							elems = reflect.Append(elems, elem)
 						} else {
 							elems = reflect.Append(elems, elem.Addr())
 						}
-						} else {
-							appendToJoins(v, elem)
-						}
 					}
 				}
 			}
@@ -282,7 +286,7 @@ func SaveAfterAssociations(db *gorm.DB) {
 			}
 
 			if elems.Len() > 0 {
-				db.Session(&gorm.Session{}).Create(elems.Interface())
+				db.Session(&gorm.Session{}).Clauses(clause.OnConflict{DoNothing: true}).Create(elems.Interface())
 
 				for i := 0; i < elems.Len(); i++ {
 					appendToJoins(objs[i], elems.Index(i))

callbacks/create.go

@@ -55,21 +55,36 @@ func Create(config *Config) func(db *gorm.DB) {
 					result, err := db.Statement.ConnPool.ExecContext(db.Statement.Context, db.Statement.SQL.String(), db.Statement.Vars...)
 
 					if err == nil {
+						db.RowsAffected, _ = result.RowsAffected()
+						if db.RowsAffected > 0 {
 							if db.Statement.Schema != nil && db.Statement.Schema.PrioritizedPrimaryField != nil && db.Statement.Schema.PrioritizedPrimaryField.HasDefaultValue {
 								if insertID, err := result.LastInsertId(); err == nil {
 									switch db.Statement.ReflectValue.Kind() {
 									case reflect.Slice, reflect.Array:
 										if config.LastInsertIDReversed {
 											for i := db.Statement.ReflectValue.Len() - 1; i >= 0; i-- {
+												_, isZero := db.Statement.Schema.PrioritizedPrimaryField.ValueOf(db.Statement.ReflectValue.Index(i))
+												if isZero {
 													db.Statement.Schema.PrioritizedPrimaryField.Set(db.Statement.ReflectValue.Index(i), insertID)
 													insertID--
 												}
+											}
 										} else {
+											allUpdated := int(db.RowsAffected) == db.Statement.ReflectValue.Len()
+											isZero := true
+
 											for i := 0; i < db.Statement.ReflectValue.Len(); i++ {
+
+												if !allUpdated {
+													_, isZero = db.Statement.Schema.PrioritizedPrimaryField.ValueOf(db.Statement.ReflectValue.Index(i))
+												}
+
+												if isZero {
 													db.Statement.Schema.PrioritizedPrimaryField.Set(db.Statement.ReflectValue.Index(i), insertID)
 													insertID++
 												}
 											}
+										}
 									case reflect.Struct:
 										db.Statement.Schema.PrioritizedPrimaryField.Set(db.Statement.ReflectValue, insertID)
 									}
@@ -77,7 +92,7 @@ func Create(config *Config) func(db *gorm.DB) {
 									db.AddError(err)
 								}
 							}
-						db.RowsAffected, _ = result.RowsAffected()
+						}
 					} else {
 						db.AddError(err)
 					}
@@ -129,9 +144,19 @@ func CreateWithReturning(db *gorm.DB) {
 
 					switch db.Statement.ReflectValue.Kind() {
 					case reflect.Slice, reflect.Array:
+						c := db.Statement.Clauses["ON CONFLICT"]
+						onConflict, _ := c.Expression.(clause.OnConflict)
+
 						for rows.Next() {
+						BEGIN:
 							for idx, field := range fields {
-								values[idx] = field.ReflectValueOf(db.Statement.ReflectValue.Index(int(db.RowsAffected))).Addr().Interface()
+								fieldValue := field.ReflectValueOf(db.Statement.ReflectValue.Index(int(db.RowsAffected)))
+								if onConflict.DoNothing && !fieldValue.IsZero() {
+									db.RowsAffected++
+									goto BEGIN
+								}
+
+								values[idx] = fieldValue.Addr().Interface()
 							}
 
 							db.RowsAffected++
@@ -211,7 +236,7 @@ func ConvertToCreateValues(stmt *gorm.Statement) (values clause.Values) {
 		case reflect.Slice, reflect.Array:
 			stmt.SQL.Grow(stmt.ReflectValue.Len() * 15)
 			values.Values = make([][]interface{}, stmt.ReflectValue.Len())
-			defaultValueFieldsHavingValue := map[string][]interface{}{}
+			defaultValueFieldsHavingValue := map[*schema.Field][]interface{}{}
 			for i := 0; i < stmt.ReflectValue.Len(); i++ {
 				rv := reflect.Indirect(stmt.ReflectValue.Index(i))
 				values.Values[i] = make([]interface{}, len(values.Columns))
@@ -231,20 +256,20 @@ func ConvertToCreateValues(stmt *gorm.Statement) (values clause.Values) {
 				for _, field := range stmt.Schema.FieldsWithDefaultDBValue {
 					if v, ok := selectColumns[field.DBName]; (ok && v) || (!ok && !restricted) {
 						if v, isZero := field.ValueOf(rv); !isZero {
-							if len(defaultValueFieldsHavingValue[field.DBName]) == 0 {
+							if len(defaultValueFieldsHavingValue[field]) == 0 {
-								defaultValueFieldsHavingValue[field.DBName] = make([]interface{}, stmt.ReflectValue.Len())
+								defaultValueFieldsHavingValue[field] = make([]interface{}, stmt.ReflectValue.Len())
 							}
-							defaultValueFieldsHavingValue[field.DBName][i] = v
+							defaultValueFieldsHavingValue[field][i] = v
 						}
 					}
 				}
 			}
 
-			for db, vs := range defaultValueFieldsHavingValue {
+			for field, vs := range defaultValueFieldsHavingValue {
-				values.Columns = append(values.Columns, clause.Column{Name: db})
+				values.Columns = append(values.Columns, clause.Column{Name: field.DBName})
 				for idx := range values.Values {
 					if vs[idx] == nil {
-						values.Values[idx] = append(values.Values[idx], clause.Expr{SQL: "DEFAULT"})
+						values.Values[idx] = append(values.Values[idx], stmt.Dialector.DefaultValueOf(field))
 					} else {
 						values.Values[idx] = append(values.Values[idx], vs[idx])
 					}

clause/clause.go

@@ -64,6 +64,7 @@ func (c Clause) Build(builder Builder) {
 const (
 	PrimaryKey   string = "@@@py@@@" // primary key
 	CurrentTable string = "@@@ct@@@" // current table
+	Associations string = "@@@as@@@" // associations
 )
 
 var (

interfaces.go

@@ -14,6 +14,7 @@ type Dialector interface {
 	Initialize(*DB) error
 	Migrator(db *DB) Migrator
 	DataTypeOf(*schema.Field) string
+	DefaultValueOf(*schema.Field) clause.Expression
 	BindVarTo(writer clause.Writer, stmt *Statement, v interface{})
 	QuoteTo(clause.Writer, string)
 	Explain(sql string, vars ...interface{}) string

migrator/migrator.go

@@ -57,10 +57,6 @@ func (m Migrator) DataTypeOf(field *schema.Field) string {
 func (m Migrator) FullDataTypeOf(field *schema.Field) (expr clause.Expr) {
 	expr.SQL = m.DataTypeOf(field)
 
-	if field.AutoIncrement {
-		expr.SQL += " AUTO_INCREMENT"
-	}
-
 	if field.NotNull {
 		expr.SQL += " NOT NULL"
 	}

schema/field_test.go

@@ -235,7 +235,7 @@ func TestParseFieldWithPermission(t *testing.T) {
 	}
 
 	fields := []schema.Field{
-		{Name: "ID", DBName: "id", BindNames: []string{"ID"}, DataType: schema.Uint, PrimaryKey: true, Size: 64, Creatable: true, Updatable: true, Readable: true, HasDefaultValue: true},
+		{Name: "ID", DBName: "id", BindNames: []string{"ID"}, DataType: schema.Uint, PrimaryKey: true, Size: 64, Creatable: true, Updatable: true, Readable: true, HasDefaultValue: true, AutoIncrement: true},
 		{Name: "Name", DBName: "", BindNames: []string{"Name"}, DataType: "", Tag: `gorm:"-"`, Creatable: false, Updatable: false, Readable: false},
 		{Name: "Name2", DBName: "name2", BindNames: []string{"Name2"}, DataType: schema.String, Tag: `gorm:"->"`, Creatable: false, Updatable: false, Readable: true},
 		{Name: "Name3", DBName: "name3", BindNames: []string{"Name3"}, DataType: schema.String, Tag: `gorm:"<-"`, Creatable: true, Updatable: true, Readable: true},

schema/relationship.go

@@ -251,11 +251,13 @@ func (schema *Schema) buildMany2ManyRelation(relation *Relationship, field *Fiel
 	}
 	relation.JoinTable.Name = many2many
 	relation.JoinTable.Table = schema.namer.JoinTableName(many2many)
+	relation.JoinTable.PrimaryFields = make([]*Field, len(relation.JoinTable.Fields))
 
 	// build references
-	for _, f := range relation.JoinTable.Fields {
+	for idx, f := range relation.JoinTable.Fields {
 		// use same data type for foreign keys
 		f.DataType = fieldsMap[f.Name].DataType
+		relation.JoinTable.PrimaryFields[idx] = f
 
 		relation.References = append(relation.References, &Reference{
 			PrimaryKey:    fieldsMap[f.Name],

schema/schema.go

@@ -188,6 +188,7 @@ func Parse(dest interface{}, cacheStore *sync.Map, namer Namer) (*Schema, error)
 				schema.FieldsWithDefaultDBValue = append(schema.FieldsWithDefaultDBValue, field)
 			}
 			field.HasDefaultValue = true
+			field.AutoIncrement = true
 		}
 	}
 

schema/schema_test.go

@@ -32,7 +32,7 @@ func checkUserSchema(t *testing.T, user *schema.Schema) {
 
 	// check fields
 	fields := []schema.Field{
-		{Name: "ID", DBName: "id", BindNames: []string{"Model", "ID"}, DataType: schema.Uint, PrimaryKey: true, Tag: `gorm:"primarykey"`, TagSettings: map[string]string{"PRIMARYKEY": "PRIMARYKEY"}, Size: 64, HasDefaultValue: true},
+		{Name: "ID", DBName: "id", BindNames: []string{"Model", "ID"}, DataType: schema.Uint, PrimaryKey: true, Tag: `gorm:"primarykey"`, TagSettings: map[string]string{"PRIMARYKEY": "PRIMARYKEY"}, Size: 64, HasDefaultValue: true, AutoIncrement: true},
 		{Name: "CreatedAt", DBName: "created_at", BindNames: []string{"Model", "CreatedAt"}, DataType: schema.Time},
 		{Name: "UpdatedAt", DBName: "updated_at", BindNames: []string{"Model", "UpdatedAt"}, DataType: schema.Time},
 		{Name: "DeletedAt", DBName: "deleted_at", BindNames: []string{"Model", "DeletedAt"}, Tag: `gorm:"index"`, DataType: schema.Time},
@@ -125,7 +125,7 @@ func TestParseSchemaWithAdvancedDataType(t *testing.T) {
 
 	// check fields
 	fields := []schema.Field{
-		{Name: "ID", DBName: "id", BindNames: []string{"ID"}, DataType: schema.Int, PrimaryKey: true, Size: 64, HasDefaultValue: true},
+		{Name: "ID", DBName: "id", BindNames: []string{"ID"}, DataType: schema.Int, PrimaryKey: true, Size: 64, HasDefaultValue: true, AutoIncrement: true},
 		{Name: "Name", DBName: "name", BindNames: []string{"Name"}, DataType: schema.String},
 		{Name: "Birthday", DBName: "birthday", BindNames: []string{"Birthday"}, DataType: schema.Time},
 		{Name: "RegisteredAt", DBName: "registered_at", BindNames: []string{"RegisteredAt"}, DataType: schema.Time},

tests/associations_has_one_test.go

@@ -68,6 +68,7 @@ func TestHasOneAssociation(t *testing.T) {
 	AssertAssociationCount(t, user2, "Account", 0, "after delete")
 
 	// Prepare Data for Clear
+	account = Account{Number: "account-has-one-append"}
 	if err := DB.Model(&user2).Association("Account").Append(&account); err != nil {
 		t.Fatalf("Error happened when append Account, got %v", err)
 	}
@@ -185,6 +186,7 @@ func TestPolymorphicHasOneAssociation(t *testing.T) {
 	AssertAssociationCount(t, pet2, "Toy", 0, "after delete")
 
 	// Prepare Data for Clear
+	toy = Toy{Name: "toy-has-one-append"}
 	if err := DB.Model(&pet2).Association("Toy").Append(&toy); err != nil {
 		t.Fatalf("Error happened when append Toy, got %v", err)
 	}

tests/go.mod

@@ -6,11 +6,11 @@ require (
 	github.com/google/uuid v1.1.1
 	github.com/jinzhu/now v1.1.1
 	github.com/lib/pq v1.6.0
-	gorm.io/driver/mysql v0.2.1
+	gorm.io/driver/mysql v0.2.2
-	gorm.io/driver/postgres v0.2.1
+	gorm.io/driver/postgres v0.2.2
-	gorm.io/driver/sqlite v1.0.4
+	gorm.io/driver/sqlite v1.0.5
-	gorm.io/driver/sqlserver v0.2.1
+	gorm.io/driver/sqlserver v0.2.2
-	gorm.io/gorm v0.2.7
+	gorm.io/gorm v0.2.9
 )
 
 replace gorm.io/gorm => ../

tests/helper_test.go

@@ -58,7 +58,6 @@ func GetUser(name string, config Config) *User {
 	for i := 0; i < config.Languages; i++ {
 		name := name + "_locale_" + strconv.Itoa(i+1)
 		language := Language{Code: name, Name: name}
-		DB.Create(&language)
 		user.Languages = append(user.Languages, language)
 	}
 

tests/preload_suits_test.go

@@ -4,6 +4,7 @@ import (
 	"database/sql"
 	"encoding/json"
 	"reflect"
+	"sort"
 	"testing"
 
 	"gorm.io/gorm"
@@ -735,7 +736,6 @@ func TestManyToManyPreloadWithMultiPrimaryKeys(t *testing.T) {
 	if err := DB.Preload("Level1s").Find(&got, "value = ?", "Bob").Error; err != nil {
 		t.Error(err)
 	}
-	return
 
 	if !reflect.DeepEqual(got, want) {
 		t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
@@ -1459,6 +1459,12 @@ func TestPrefixedPreloadDuplication(t *testing.T) {
 		t.Error(err)
 	}
 
+	for _, level1 := range append(got, want...) {
+		sort.Slice(level1.Level2.Level3.Level4s, func(i, j int) bool {
+			return level1.Level2.Level3.Level4s[i].ID > level1.Level2.Level3.Level4s[j].ID
+		})
+	}
+
 	if !reflect.DeepEqual(got, want) {
 		t.Errorf("got %s; want %s", toJSONString(got), toJSONString(want))
 	}

tests/tests_all.sh

@@ -8,7 +8,7 @@ if [ -d tests ]
 then
   cd tests
   cp go.mod go.mod.bak
-  sed '/gorm.io\/driver/d' go.mod.bak > go.mod
+  sed '/$[[:space:]]*gorm.io\/driver/d' go.mod.bak > go.mod
   cd ..
 fi
 

tests/tests_test.go

@@ -34,6 +34,9 @@ func init() {
 		}
 
 		RunMigrations()
+		if DB.Dialector.Name() == "sqlite" {
+			DB.Exec("PRAGMA foreign_keys = ON")
+		}
 	}
 }
 
@@ -66,7 +69,6 @@ func OpenTestConnection() (db *gorm.DB, err error) {
 	default:
 		log.Println("testing sqlite3...")
 		db, err = gorm.Open(sqlite.Open(filepath.Join(os.TempDir(), "gorm.db")), &gorm.Config{})
-		db.Exec("PRAGMA foreign_keys = ON")
 	}
 
 	if debug := os.Getenv("DEBUG"); debug == "true" {

utils/tests/dummy_dialecter.go

@@ -18,6 +18,10 @@ func (DummyDialector) Initialize(*gorm.DB) error {
 	return nil
 }
 
+func (DummyDialector) DefaultValueOf(field *schema.Field) clause.Expression {
+	return clause.Expr{SQL: "DEFAULT"}
+}
+
 func (DummyDialector) Migrator(*gorm.DB) gorm.Migrator {
 	return nil
 }