baize-demo/project/server/application/service/student.go

package service

import (
	"baize-demo/project/server/application/domain/student"
	"git.sxidc.com/go-framework/baize/convenient/domain/query_rule/rule"
	"git.sxidc.com/go-framework/baize/convenient/entity_crud"
	"git.sxidc.com/go-framework/baize/framework/binding"
	"git.sxidc.com/go-framework/baize/framework/core/api"
	"git.sxidc.com/go-framework/baize/framework/core/api/request"
	"git.sxidc.com/go-framework/baize/framework/core/api/response"
	"git.sxidc.com/go-framework/baize/framework/core/application"
	"git.sxidc.com/go-framework/baize/framework/core/domain"
	"git.sxidc.com/go-framework/baize/framework/core/infrastructure"
	"git.sxidc.com/go-framework/baize/framework/core/infrastructure/database"
	"git.sxidc.com/go-framework/baize/framework/core/infrastructure/database/clause"
	"git.sxidc.com/go-framework/baize/framework/core/infrastructure/database/sql"
)

var studentService = &StudentService{}

type StudentService struct{}

func (svc *StudentService) Init(appInstance *application.App) error {
	err := student.RegisterQueryRule()
	if err != nil {
		return err
	}

	svc.v1(appInstance)
	return nil
}

func (svc *StudentService) Destroy() error {
	return nil
}

func (svc *StudentService) v1(appInstance *application.App) {
	v1Binder := binding.NewBinder(appInstance.ChooseRouter(api.RouterPrefix, "v1"), appInstance.Infrastructure())

	entity_crud.BindSimple[student.Info](v1Binder, &entity_crud.Simple[student.Info]{
		Entity:             &student.Entity{},
		Schema:             dbSchema,
		CreateJsonBody:     &student.CreateStudentJsonBody{},
		DeleteQueryParams:  &student.DeleteStudentQueryParams{},
		UpdateJsonBody:     &student.UpdateStudentJsonBody{},
		GetByIDQueryParams: &student.GetStudentByIDQueryParams{},
	}, entity_crud.WithDisableQuery[student.Info]())

	binding.GetBind(v1Binder, &binding.SimpleBindItem[response.InfosData[student.Info]]{
		Path:             "/student/query",
		SendResponseFunc: response.SendInfosResponse[student.Info],
		RequestParams:    &student.GetStudentsQueryParams{},
		Objects:          []domain.Object{&student.Entity{}},
		ServiceFunc: func(c *api.Context, params request.Params, objects []domain.Object, i *infrastructure.Infrastructure) (response.InfosData[student.Info], error) {
			errResponse := response.InfosData[student.Info]{
				Infos: make([]student.Info, 0),
			}

			queryParams, err := request.ToConcrete[*student.GetStudentsQueryParams](params)
			if err != nil {
				return errResponse, err
			}

			e, err := domain.ToConcrete[*student.Entity](objects[0])
			if err != nil {
				return errResponse, err
			}

			hasRule, err := rule.HasRule(dbSchema, "global", e.DomainCamelName(), i)
			if err != nil {
				return errResponse, err
			}

			if !hasRule {
				queryFunc := entity_crud.Query[student.Info](domain.TableName(dbSchema, e), "", nil, nil, nil)
				return queryFunc(c, params, objects, i)
			}

			conditionClause, err := rule.FormConditionClause(dbSchema, "global", e.DomainCamelName(), i, e.FormQueryRuleParams())
			if err != nil {
				return errResponse, err
			}

			selectClause := clause.NewSelect(
				nil,
				clause.NewFrom([]clause.Clause{clause.TableName(domain.TableName(dbSchema, e))}),
				clause.NewWhere(conditionClause),
				clause.NewLimit(queryParams.PageNo, queryParams.PageSize))

			selectClauseStr, err := selectClause.Clause()
			if err != nil {
				return errResponse, err
			}

			results, err := database.ExecuteRawSql(i.DBExecutor(), selectClauseStr, selectClause.Args()...)
			if err != nil {
				return errResponse, err
			}

			countClause := clause.NewSelect(
				[]string{"COUNT(*) AS total"},
				clause.NewFrom([]clause.Clause{clause.TableName(domain.TableName(dbSchema, e))}),
				clause.NewWhere(conditionClause))

			countClauseStr, err := countClause.Clause()
			if err != nil {
				return errResponse, err
			}

			countResults, err := database.ExecuteRawSql(i.DBExecutor(), countClauseStr, countClause.Args()...)
			if err != nil {
				return errResponse, err
			}

			infos := make([]student.Info, 0)
			err = sql.ParseSqlResult(results, &infos)
			if err != nil {
				return errResponse, err
			}

			return response.InfosData[student.Info]{
				Infos:      infos,
				TotalCount: countResults[0].ColumnValueInt64("total"),
				PageNo:     queryParams.PageNo,
			}, nil
		},
	})
}