GWT RequestFactory和多个请求

Question

有没有办法使用RequestFactory在单个请求中创建两个实体？我试过了:

    EmployeeRequest request = requestFactory.employeeRequest();
    EmployeeProxy newEmployee = request.create(EmployeeProxy.class);
    newEmployee.setName("Joe!");

    Request<Void> createReq = request.persist().using(newEmployee);
    createReq.fire();

    EmployeeProxy newEmployee2 = request.create(EmployeeProxy.class);
    newEmployee2.setName("Sam!");

    Request<Void> createReq2 = request.persist().using(newEmployee2);
    createReq2.fire();

但是我收到一个错误,表明请求已在进行中.当我做两个单独的EmployeeRequests时:

    EmployeeRequest request = requestFactory.employeeRequest();
    EmployeeProxy newEmployee = request.create(EmployeeProxy.class);
    newEmployee.setName("Joe!");

    Request<Void> createReq = request.persist().using(newEmployee);
    createReq.fire();

    EmployeeRequest request2 = requestFactory.employeeRequest();
    EmployeeProxy newEmployee2 = request2.create(EmployeeProxy.class);
    newEmployee2.setName("Sam!");

    Request<Void> createReq2 = request2.persist().using(newEmployee2);
    createReq2.fire();

然后从浏览器发出两个单独的请求.我希望RequestFactory中的某些东西可以合并多个请求 - 我必须一次创建数百个实体,而且我不想发出数百个请求!

Answer 1

是的,这是可能的.在第一个示例中,只需删除该行即可

createReq.fire();

当您最后调用createReq2.fire()时,GWT会在一个请求中发送newEmployee和newEmployee2(因为它们都在EmployeeRequest的上下文中持久存在" request").我个人觉得语义有点奇怪,但这只是我的看法.

Riley的附录:以下语法是等效的,更直观:

    EmployeeRequest request = requestFactory.employeeRequest();
    EmployeeProxy newEmployee = request.create(EmployeeProxy.class);
    newEmployee.setName("Joe!");

    request.persist().using(newEmployee);

    EmployeeProxy newEmployee2 = request.create(EmployeeProxy.class);
    newEmployee2.setName("Sam!");

    request.persist().using(newEmployee2);
    request.fire();