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Extending CQ native commerce provider API

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Hi there ,

I have started exploring cq commerce and as part of it was trying to extend the CQ native API . Referring the article from here http://helpx.adobe.com/adobe-cq/using/creating-custom-cq-commerce-providers.html , i have deployed my extended CQ commerce classes in felix console as a OSGI bundle . My custom CQ commerce provider is 'training' .

However in geometrixx / en pages when I change 'cq:commerceprovider' property to 'training' and start using the pages it throws Null pointer exceptions in the back end with no products getting displayed on the category pages .

My debugger pointed out to getServiceContext method from OOTB class 'AbstractJcrCommerceServiceFactory' . It seems that AbstractJcrCommerceServiceFactory has service dependencies via @ reference to set of services like languagemanager , slingRepository etc which should normally gets injected . The getServiceContext method basically gives handles to these set of injected references .

These services are injecting as expected when I'm using the OOTB reference commerce provider implementation('geometrixx') which by default ships in with CQ installation . However when I change the provider to 'training' these services are not getting injected and getserviceContext returns null,which eventually is throwing null pointer exception .

I see the same behaviour when I deploy my bundle from 'crxde' or 'eclipse ' . I was on java 1.7 and also tested it in java 1.6 . From felix console I can see the bundle properly registered . Any pointers why these services not getting injected ?

@Component(componentAbstract = true, metatype = false) public abstract class AbstractJcrCommerceServiceFactory implements CommerceServiceFactory { @Reference protected LanguageManager languageManager; @Reference protected UserPropertiesService userPropertiesService; @Reference protected SlingSettingsService slingSettingsService; @Reference protected SlingRepository slingRepository; @Reference protected CommerceSearchProviderManager searchProviderManager;

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ramm18660403Accepted solution

To Sandro - The issue that you have faced is because in the AbstractJcrCommerceSession, the languageManager is null. You have to put following code in you custom CommerceServiceFactory class. That will resolve your issue.

public class TrainingCommerceServiceFactory extends AbstractJcrCommerceServiceFactory implements CommerceServiceFactory{

   @Reference
   protected LanguageManager languageManager;
   @Reference
   protected UserPropertiesService userPropertiesService;
   @Reference
   protected SlingSettingsService slingSettingsService;
   @Reference
   protected SlingRepository slingRepository;
   @Reference
   protected CommerceSearchProviderManager searchProviderManager;

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smacdonald2008

Level 10

Watch the video here and there is also a link to GitHub that has the sample code -- see if this helps:

http://dev.day.com/content/ddc/en/gems/commerce-framework.html

Thxs

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Sham_HC

Level 10

Seems like You are using deprecated api can you use new api AbstractJcrCommerceService

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M

mariad52599385

This worked for me :) Thanks!

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R

rohan_raj1

Level 2

Hi Sham,

I am facing similar issue where the ServiceContext seems to be empty. It returns languageManager , slingSettingService etc as null.

Caused by: java.lang.NullPointerException: null at com.adobe.cq.commerce.common.AbstractJcrCommerceSession.<init>(AbstractJcrCommerceSession.java:158) at com.gtsp.aem.core.commerce.GTSPCommerceSessionImpl.<init>(GTSPCommerceSessionImpl.java:45)

Can you point out the exact version to be used? We are using AEM 6.3 and the commerce API showing as 5.15.48 on Depfinder.

Although we are not adding any dependency for commerce API in our POM, seems to be resolved from the Uber jar dependency.

mariad52599385 What you changed to make it work?

Any pointer will be helpful. We are trying to use We-Retail implementation example.

Rohan.

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vijays80591732

Level 3

Hi Madireddy,

I'm struckup with the same issue and I put your fix in my code. It started working. But when I restarted the server it is again not working. after that I have restarted my AEM server multiple times but no luck. do you have any idea on this?

Thanks,

Vijay

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D

Darrin_Johnson

I ran into this issue as well. It was due to my project using OSGI R6 Annotations, while the AbstractJcrCommerceServiceFactory and the WeRetailCommerceServiceFactory both use the older Felix SCR annotations to populate the Referenced Services.

I was able to get around this by using OSGI R6 Annotations to reference the LanguageManager, UserPropertiesService, SlingSettingsService, SlingRepository, and CommerceSearchProviderManager within my CommerceServiceFactory.

Then within my CommerceServiceFactory.getCommerceService() method, call the bind methods that belong to AbstractJcrCommerceServiceFactory

public class MyCommerceServiceFactory extends AbstractJcrCommerceServiceFactory implements CommerceServiceFactory {

   @Reference
   protected LanguageManager languageManager;
   @Reference
   protected UserPropertiesService userPropertiesService;
   @Reference
   protected SlingSettingsService slingSettingsService;
   @Reference
   protected SlingRepository slingRepository;
   @Reference
   protected CommerceSearchProviderManager searchProviderManager;

public CommerceService getCommerceService(Resource res) {

   bindLanguageManager(languageManager);
   bindUserPropertiesService(userPropertiesService);
   bindSlingSettingsService(slingSettingsService);
   bindSlingRepository(slingRepository);
   bindSearchProviderManager(searchProviderManager);
   return new MyCommerceServiceImpl(getServiceContext(), res);
}

}

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