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krisgumm
Level 3
October 16, 2015
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Extending CQ native commerce provider API

  • October 16, 2015
  • 16 replies
  • 5719 views

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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    Best answer by ramm18660403

    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;

    16 replies

    Show previous replies
    K
    krisgummAuthor
    Level 3
    October 16, 2015

    Hi ,

       Did you get a chance to debug the code with CQ commerce API added as src .  That was how I was able to dig out the problem ,  I faced with 'AbstractJcrCommerceServiceFactory.getServiceContext ' . I was on AEM 5.6.1 and the code from GIT hub didn't work out straight for me . 

    A
    Anonymous
    October 16, 2015

    Hi krisgumm,

     

    you have mentioned that 

    I was on AEM 5.6.1 and the code from GIT hub didn't work out straight for me . 

    can you specify me what are the changes you have done to make the code work?

    Thanks,

    vksptg

    M
    mariad52599385
    September 23, 2016

    This worked for me :) Thanks!

    R
    rohan_raj1
    Level 2
    March 5, 2018

    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.

    vijays80591732
    vijays80591732
    Level 3
    September 24, 2018

    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

    D
    Darrin_Johnson
    October 24, 2018

    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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