Question Re: How do i save data to a database (Customer/User) in CRM and CX Q&A

How do i save data to a database (Customer/User)

Former Member — Fri, 29 Mar 2019 07:41:33 GMT

Hi guys,

I am new to hybris development, and I have created a custom extension in my hybris. I don't really understand how to use an existing service to persist my Customer data to the database.

I have tried using the ModelService, but i do not know how to initialize it.

It would be great if anyone can help me understand how data can be persisted in Hybris Commerce.

Thank You,

Re: How do i save data to a database (Customer/User)

arvind-kumar_avinash — Fri, 29 Mar 2019 11:19:15 GMT

Hi - you need to inject ModelService as shown below:

 @Resource
 private ModelService modelService;

and then after setting the values in your model object, you need to save the model using modelService.save(your-model-object)

If you still get NPE, please inject ModelService as given below:

 @Autowired
 private ModelService modelService;

and use the following in your Spring Configuration file:

 <context:annotation-config/>
 <context:component-scan  base-package="your-package-name"/>

You can find many examples in Test classes. A File Search in ee with the parameters as given in the screenshot will return the classes you can refer for your requirement.

Re: How do i save data to a database (Customer/User)

Former Member — Fri, 29 Mar 2019 16:50:58 GMT

Hi Avinash,

Thanks for getting back on this. I have tried the method above, but i am still getting a null pointer exception on line 35. Here is my code, please let me know what am I doing wrong here.

Re: How do i save data to a database (Customer/User)

arvind-kumar_avinash — Fri, 29 Mar 2019 19:54:20 GMT

I am not sure if you are really getting the NPE at line#35. Could you please replace line#31 with CustomerModel customer = modelService.create(CustomerModel.class); and see if you get the NPE at line#31? If yes, probably your server has started with some errors.

Re: How do i save data to a database (Customer/User)

Former Member — Sat, 30 Mar 2019 20:48:46 GMT

Have you added the dependency in spring.xml file?

Re: How do i save data to a database (Customer/User)

Former Member — Sun, 31 Mar 2019 18:20:11 GMT

Hi Avinash,

Thank you for your quick reply. I tried again with your suggestion and NPE occurs on line 31 with the modelService.create().

Do i need to maintain dependencies in my extension dependency.xml if I am using CustomerModel? Maybe there is a runtime error occuring because of this?

Re: How do i save data to a database (Customer/User)

Former Member — Sun, 31 Mar 2019 18:22:49 GMT

Hi Ashish,

Do you mean the CustomerModel dependency in my extension spring dependency xml?

If so, then no i have not. I will try again.

Re: How do i save data to a database (Customer/User)

arvind-kumar_avinash — Sun, 31 Mar 2019 18:56:34 GMT

Did you try injecting ModelService as given below?

  @Autowired
  private ModelService modelService;

Do i need to maintain dependencies in my extension dependency.xml if I am using CustomerModel? Maybe there is a runtime error occuring because of this?

No. This problem is because ModelService is not getting instantiated.

Re: How do i save data to a database (Customer/User)

Former Member — Mon, 01 Apr 2019 04:58:56 GMT

Yes, I changed it to the autowired annotation.

Re: How do i save data to a database (Customer/User)

Former Member — Mon, 01 Apr 2019 09:00:38 GMT

Hi Avinash,

I have updated in my comment's above how I initialize the modelService.

Thank you,

Re: How do i save data to a database (Customer/User)

Former Member — Mon, 01 Apr 2019 09:01:52 GMT

Hi All,

I solved my issue, to initialize the modelService, we can use the code below. Also if we are performing CRUD operations, we need to provide the Uid of the model, before save().

 final ModelService modelService = Registry.getApplicationContext().getBean("modelService", ModelService.class);