NPE with afterCreate

Data Service
1

Hi,

I’m getting the following NPE.









BackendlessException{ code: 'Server.Processing', message: 'java.lang.RuntimeException: java.lang.NullPointerException' }

	at com.backendless.Invoker$SyncResponder.errorHandler(Invoker.java:132)

	at com.backendless.core.responder.AdaptingResponder.handledAsFault(AdaptingResponder.java:120)

	at com.backendless.core.responder.AdaptingResponder.responseHandler(AdaptingResponder.java:75)

	at weborb.client.ioEngine.HttpIOEngine.processAMFResponse(HttpIOEngine.java:261)

	at weborb.client.ioEngine.HttpIOEngine.send(HttpIOEngine.java:206)

	at weborb.client.ioEngine.HttpIOEngine.invoke(HttpIOEngine.java:144)

	at weborb.client.WeborbClient.invoke(WeborbClient.java:138)

	at com.backendless.Invoker.invokeSync(Invoker.java:100)

	at com.backendless.Persistence.save(Persistence.java:96)

	at com.backendless.DataStoreFactory$1.save(DataStoreFactory.java:40)

	at com.backendless.digitalcopel.models.Subscriptions.save(Subscriptions.java:144)

	at com.backendless.digitalcopel.events.persistence_service.ClassroomMemberActivationRequestsTableEventHandler.afterCreate(ClassroomMemberActivationRequestsTableEventHandler.java:52)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:606)

	at com.backendless.coderunner.runtime.InvocationTask.runImpl(InvocationTask.java:95)

	at com.backendless.coderunner.runtime.concurrent.ExtendedRunnable.run(ExtendedRunnable.java:20)

	at java.lang.Thread.run(Thread.java:745)

And the code is:









	@Override

	public void afterCreate(

			RunnerContext context,

			ClassroomMemberActivationRequests classroommemberactivationrequests,

			ExecutionResult<ClassroomMemberActivationRequests> result)

			throws Exception {

		logger = Logger.getLogger(ClassroomMemberActivationRequests.class);

		

		Subscriptions s = new Subscriptions();

		try {

			Devices d = Backendless.Persistence.of(Devices.class).findFirst();

			d.save();

			s.setClassroom("TEST");

			s.setDevice(d);

			s.save();

		} catch (Exception ex) {

ex.printStackTrace();

		} 

}

This code is in the afterCreate event handler for the ClassroomMemberActivationRequestsTableEventHandler. It’s a simplified version of the code where I get the same NPE with my actual business logic. I’m using CodeRunner v1.13. The app ID is the usual one, dev version.

2

By the way, the exception does not happen if I do not run setDevices on the the new Subscription object.

3

And to clarify the exception, it happens on the line: s.save();

4

Hi Simon!
Can I export data from your app to investigate this problem on my local server?

Regards,
Kate.

5

Sure, thanks!

6

Hi, Simon,

Are you using the latest CodeRunner? (v1.13)

7

Yes I am. I mentioned that at the bottom of the post.

8

Hi Simon!
Please download latest Code Runner SDK from site. We made several updates in project.
Regards,
Kate.

9

That worked, thanks.