return &callback{before: name, processor: p}
}

func (p *processor) After(name string) *callback {
	return &callback{after: name, processor: p}
}

func (p *processor) Match(fc func(*DB) bool) *callback {
	return &callback{match: fc, processor: p}
}

func (p *processor) Register(name string, fn func(*DB)) error {
	return (&callback{processor: p}).Register(name, fn)
}

package schema

import (
	"regexp"
	"strings"

	"gorm.io/gorm/clause"
)

// reg match english letters and midline
var regEnLetterAndMidline = regexp.MustCompile(`^[\w-]+$`)

type CheckConstraint struct {
	Name       string
	Constraint string // length(phone) >= 10
	*Field
}

func (chk *CheckConstraint) GetName() string { return chk.Name }

func (chk *CheckConstraint) Build() (sql string, vars []interface{}) {

	users := []User{
		*GetUser("create_with_default_batch_size_1", Config{Account: true, Pets: 2, Toys: 3, Company: true, Manager: true, Team: 0, Languages: 1, Friends: 1}),
		*GetUser("create_with_default_batch_sizs_2", Config{Account: false, Pets: 2, Toys: 4, Company: false, Manager: false, Team: 1, Languages: 3, Friends: 5}),

	if err := query.First(&result, user.ID).Error; err != nil {
		t.Fatalf("Failed, got error: %v", err)
	}

	if result.ID != user.ID {
		t.Fatalf("result's id, %d, doesn't match user's id, %d", result.ID, user.ID)
	}
}

func TestJoinWithSoftDeleted(t *testing.T) {
	user := GetUser("TestJoinWithSoftDeletedUser", Config{Account: true, NamedPet: true})
	DB.Create(&user)

			}

			if c.before != "" {
				callMethod(v, "Before", c.before)
			}

			if c.after != "" {
				callMethod(v, "After", c.after)
			}

			if c.match != nil {
				callMethod(v, "Match", c.match)
			}

			if c.remove {
				callMethod(v, "Remove", c.name)
			} else if c.replace {
				callMethod(v, "Replace", c.name, c.h)
			} else {
				callMethod(v, "Register", c.name, c.h)

			if len(relations.Relations) != len(rs.Relations) {
				t.Errorf("schema relations count don't match, expects %d, got %d", len(rs.Relations), len(relations.Relations))
			}
			if len(relations.EmbeddedRelations) != len(rs.EmbeddedRelations) {
				t.Errorf("schema embedded relations count don't match, expects %d, got %d", len(rs.EmbeddedRelations), len(relations.EmbeddedRelations))
			}

							gussNestedRelations := make([]*schema.Relationship, 0, len(nestedJoinNames))
							currentRelations := db.Statement.Schema.Relationships.Relations
							for _, relname := range nestedJoinNames {
								// incomplete match, only treated as raw sql
								if relation, ok = currentRelations[relname]; ok {
									gussNestedRelations = append(gussNestedRelations, relation)
									currentRelations = relation.FieldSchema.Relationships.Relations

	// ErrInvalidValue invalid value
	ErrInvalidValue = errors.New("invalid value, should be pointer to struct or slice")
	// ErrInvalidValueOfLength invalid values do not match length
	ErrInvalidValueOfLength = errors.New("invalid association values, length doesn't match")
	// ErrPreloadNotAllowed preload is not allowed when count is used
	ErrPreloadNotAllowed = errors.New("preload is not allowed when count is used")

func (db *DB) FindInBatches(dest interface{}, batchSize int, fc func(tx *DB, batch int) error) *DB {
	var (
		tx = db.Order(clause.OrderByColumn{
			Column: clause.Column{Table: clause.CurrentTable, Name: clause.PrimaryKey},
		}).Session(&Session{})
		queryDB      = tx
		rowsAffected int64
		batch        int
	)

	// user specified offset or limit
	var totalSize int

	if numField != len(columnTypes) {
		t.Fatalf("column's number not match struct and ddl, %d != %d", numField, len(columnTypes))
	}
	namer := schema.NamingStrategy{}
	for i := 0; i < numField; i++ {
		expectName := namer.ColumnName("", typ.Field(i).Name)
		if columnTypes[i].Name() != expectName {
			t.Fatalf("column order not match struct and ddl, idx %d: %s != %s",
				i, columnTypes[i].Name(), expectName)
		}
	}