ResourceResolverFactory resolverFactory is null outside of 'Activate' method when implementing Transformer and Transformerfactory

[Tyler_Maynard]

Hi.

Maybe I need to break down my service into a few services, but here is whats going on.

I am needing to modify certain links generated inside of AEM. To do this, I am working with SAX and the Transformer and TransformerFactory interfaces.

Within my service's activate method, everything works fine. I have access to the referenced ResourceResolverFactory:

@Reference

private ResourceResolverFactory resolverFactory;

@Activate
protected void activate(Map<String, Object> properties) {

   log.error("[[[ Inside of Activate ]]]]");

   Map<String, Object> param = new HashMap<String, Object>();
   param.put(ResourceResolverFactory.SUBSERVICE, SERVICE_NAME);
   ResourceResolver resolver = null;

  try {

  resolver = resolverFactory.getServiceResourceResolver(param);
   log.error("UserID => " + resolver.getUserID());
   } catch (LoginException e) {

   log.error("LoginException",e);
   } finally {

  resolver.close();
   }

}

(Sorry, the syntax highlter doesn't like the copy paste job.

If I run this same code, inside of my custom method, resolverFactory is null.

private void BuildUrl(){

   log.error("[[[ Inside of Build URL ]]]]");

   Map<String, Object> param = new HashMap<String, Object>();
   param.put(ResourceResolverFactory.SUBSERVICE, SERVICE_NAME);
  
   ResourceResolver resolver = null;

  try {

  resolver = resolverFactory.getResourceResolver(param);
  
   log.error("UserID => " + resolver.getUserID());
  
   } catch (LoginException e) {

   log.error("LoginException",e);
   }

}

Any ideas why resolverFactory is not Null during the @activate method, and then null during my custom method?

[smacdonald2008 · Accepted solution]

It does not need to be in a specific method.

See this article - we use it within a custom method in the implementation class --

Adobe Experience Manager Help | Querying Adobe Experience Manager 6 data using the Sling getServiceR...

[Tyler_Maynard]

Right, I actually looked at that implementation many times when trying to debug this to see if I was doing anything different.

I'm not.

I'm wondering if it has anything to do with the context of where my code is being called.

Within my class, as i am implementing a transformer, I have the following method:

@Override
public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {

   log.error("Inside of Start Element - local name of = " + localName);
   BuildUrl();
   contentHandler.startElement(uri, localName, qName, atts);
}

Once insde that method, and in turn my custom method buildUrl(), ResolverFactory is null .:\

[smacdonald2008]

Try a test - whitelist the bundle and see if the old getAdmin method works in a custom method.