如何在 Backendless 4.0 中使用 JAVA 保存具有关系的对象？

Question

(SAVING DATA WITH RELATION USING BACKENDLESS 4.0)

我想以一对一的关系保存数据。示例：-person_table 与 adress_table 有关系数据保存在 person_table 和 address_table 中，没有关系。怎么能做到这一点？ #backendless4.0

Adress newAdress= new Adress();
    newAdress.setAdress("43 Street");
    newAdress.setPersonId(Person);
    Backendless.Persistence.save(newAdress, new AsyncCallback< Adress >() {
        @Override
        public void handleResponse(Adress response) {
        }

        @Override
        public void handleFault(BackendlessFault fault) {
            fault.getMessage();
        }
    });

Answer 1

我找到了结果：要在 backendless 4.0 中保存关系，您需要先保存对象，然后再保存关系。

参考 link 1 : ADD RELATION WITH OBJECTS 参考 link 2 : save object with relation using REST API

Person personObject = // personObject retrieval is out of scope in this example
        Adress objectAdress = // addressObject retrieval is out of scope in this example
        ArrayList< Person > personCollection = new ArrayList< Person >();
        personCollection.add( personObject );
        Backendless.Data.of( Adress.class ).addRelation( objectAdress, "personId:Adress:n", personCollection,
            new AsyncCallback<Integer>()
            {
                @Override
                public void handleResponse( Integer response )
                {
                    progressDialog.dismiss();
                    Log.i( "MYAPP", "related objects have been added");
                }

                @Override
                public void handleFault( BackendlessFault fault )
                {

                }
            } );

如何在 Backendless 4.0 中使用 JAVA 保存具有关系的对象？

How to save object with relation using JAVA in Backendless 4.0?

java

android

database

backendless