baize-demo/project/server/application/domain/class/entity.go

package class

import (
	"git.sxidc.com/go-framework/baize/framework/core/domain/entity"
	"git.sxidc.com/go-tools/utils/strutils"
	"git.sxidc.com/service-supports/fserr"
)

const (
	ColumnName       = "name"
	ColumnStudentNum = "student_num"
)

const (
	fieldNameMaxLen = 128
)

type Entity struct {
	entity.Base
	Name       string   `sqlmapping:"column:name" sqlresult:"column:name"`
	StudentNum int      `sqlmapping:"column:student_num;updateClear;" sqlresult:"column:student_num"`
	StudentIDs []string `sqlmapping:"-" sqlresult:"-"`
	entity.TimeFields
}

func (e *Entity) DomainCNName() string {
	return "班级"
}

func (e *Entity) DomainCamelName() string {
	return "Class"
}

func (e *Entity) CheckFieldID() error {
	return e.Base.CheckFieldID(e.DomainCNName())
}

func (e *Entity) ForCreate() error {
	err := e.CheckFieldID()
	if err != nil {
		return err
	}

	err = e.checkFieldName()
	if err != nil {
		return err
	}

	return nil
}

func (e *Entity) ForDelete() error {
	return e.CheckFieldID()
}

func (e *Entity) ForUpdate() error {
	err := e.CheckFieldID()
	if err != nil {
		return err
	}

	err = e.checkUpdateFields()
	if err != nil {
		return err
	}

	return nil
}

func (e *Entity) checkFieldName() error {
	if strutils.IsStringEmpty(e.Name) {
		return fserr.New(e.DomainCNName() + "名称为空")
	}

	if len(e.Name) > fieldNameMaxLen {
		return fserr.New(e.DomainCNName() + "名称超出限定长度")
	}

	return nil
}

func (e *Entity) checkUpdateFields() error {
	if strutils.AllBlank(e.Name) {
		return fserr.New(e.DomainCNName() + "没有传递需要更新的字段")
	}

	if strutils.IsStringNotEmpty(e.Name) && len(e.Name) > fieldNameMaxLen {
		return fserr.New(e.DomainCNName() + "名称超出限定长度")
	}

	return nil
}