Insert initial records afterRegister sets ownerId to null

General
1

Hi,
I’m using UserEventHandler afterRegister to insert initial records of the newly registered user. However, when I check the records, the ownerId column is set to null. Shouldn’t this be populated with the objectId of the newly registered user?
Here’s my code.

@Override
public void afterRegister( RunnerContext context, HashMap userProperties, ExecutionResult<HashMap> result ) throws Exception
{
 // add your code here
 Category bMeal = new Category();
 bMeal.setId(UUID.randomUUID().toString());
 bMeal.setName("Before Meal");
 bMeal.setLow(70);
 bMeal.setHigh(100);
 Category aMeal = new Category();
 aMeal.setId(UUID.randomUUID().toString());
 aMeal.setName("After Meal");
 aMeal.setLow(80);
 aMeal.setHigh(140);
 Backendless.Persistence.of(Category.class).save(bMeal);
 Backendless.Persistence.of(Category.class).save(aMeal);
}

And also, it seems that logging in with a social account doesn’t trigger this event.

What would be the best event to handle creation of initial records upon successful registration?

Thanks,
Allen

2

Hello, Allen!

This behaviour is expected. The “Category” objects are created by not-authorized user, so its ownerId is null.
You can add “login” call before saving these objects. It would init user session and objects would have ownerId.
hope it helps,
Alex

3

Hi,

I’ve thought about doing a login call but it seems that the password provided in the result object is hashed. Will it work with:

Backendless.UserService.login(email, password, this, true);

Regards,
Allen

4

Hello,
No, it wouldn’t.

You can set ownerId for target objects manually:

....
String usersObjectId = (String)result.getResult().get("objectId");
aMeal.setOwnerId( usersObjectId );
bMeal.setOwnerId( usersObjectId );
...

It should help.

5

Hi,

I’ve also tried that but it didn’t work. I am able to fetch the objectId with the correct values however it still comes up null afterwards.

I think it might be related to this.

Regards,
Allen

6

Hello,

No, it doesn’t relate. Note that ownerId can be set on client, but objectId can not.
Make sure that you call aMeal.setOwnerId, but not aMeal.setObjectId.

7

Oh I see. Ok I will try this first and get back to you.

8

Hi,

Updated my code as shown below.

public class GenericUserEventHandler extends com.backendless.servercode.extension.UserExtender {

    @Override
    public void afterRegister(RunnerContext context, HashMap userProperties, ExecutionResult<HashMap> result) throws Exception {
        // add your code here
        String usersObjectId = (String)result.getResult().get("objectId");
        initCategory(usersObjectId);
    }

    @Override
    public void afterSocialRegister(RunnerContext context, Map<String, String> userProperties, SocialType socialType, ExecutionResult<HashMap> result) throws Exception {
        // add your code here
        String usersObjectId = (String)result.getResult().get("objectId");
        initCategory(usersObjectId);
    }

    private void initCategory(String ownerId) {
        Category bMeal = new Category();
        bMeal.setId(UUID.randomUUID().toString());
        bMeal.setOwnerId(ownerId);
        bMeal.setName("Before Meal");
        bMeal.setLow(70);
        bMeal.setHigh(100);

        Category aMeal = new Category();
        aMeal.setId(UUID.randomUUID().toString());
        aMeal.setName("After Meal");
        aMeal.setLow(80);
        aMeal.setHigh(140);

        Backendless.Persistence.of(Category.class).save(bMeal);
        Backendless.Persistence.of(Category.class).save(aMeal);
    }

}

Unfortunately when I checked the data, ownerId is still null.

http://support.backendless.com/public/attachments/d214d596322460aa34cbdc18e9d79294.png</img>

Regards,
Allen

d214d596322460aa34cbdc18e9d79294.png
d214d596322460aa34cbdc18e9d79294.png1001×190 24.3 KB

9

Provide your applicationId, we shall try to investigate the problem.

10

Application Id: CB0E2106-A46F-6072-FFE3-A73AD8282500

Thanks,
Allen

11

Try the following:

  1. In class Bootstrap, method onStart: add line
Backendless.Data.mapTableToClass( "Category", Category.class );
  1. In class Category add default no-argument constructor:
public Category() {}

Then recompile and deploy it again.

12

It seems to be working now when I added that code in Bootstrap. Although I don’t understand what that code means but thank you very much.

Although it doesn’t seem to be working on the afterSocialRegister. I get the following error in the terminal:

SEVERE: com.backendless.BackendlessUser cannot be cast to java.util.HashMap


java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at com.backendless.coderunner.runtime.task.EventInvocationTask.runImpl(EventInvocationTask.java:116)
        at com.backendless.coderunner.runtime.concurrent.ExtendedRunnable.run(ExtendedRunnable.java:26)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: com.backendless.BackendlessUser cannot be cast to java.util.HashMap
        at com.gluconitor.events.user_service.GenericUserEventHandler.afterSocialRegister(GenericUserEventHandler.java:40)
        ... 7 more

Regards,
Allen

13

That code adds mapping between class properties and table columns on client. As you may know, client sdk is open-source and you can look through implementation on github.
Speaking about social registration handler - we’ve been informed about this issue today and started investigation.

14

Thanks