Custom authentication was implemented for us by Adobe Professional Services. We do a bunch of cleanup after logging in including completely destroying old memberships and creating new ones etc. Lars (below in the thread) recommended using com.adobe.granite.auth.saml.util to achieve the same results....

We had implemented custom SAML handler and with 6.1 this would make it tough for us to migrate/Can i get an answer from Adobe Folks on this?com.adobe.granite.auth.saml.SamlAuthenticationHandleris this class no longer extensible in 6.1? and why?

I used this and it's working as expected now                          /* Retrieving User authorizable instance */            Authorizable auth = userManager.getAuthorizable(userInfo.getUserId());            final ResourceResolver resolver = resolverFactory.getAdministrativeResourceResolver(null);   ...

We have an event listener that listens to a xml file created under a folder. JAXB is used to convert that XML to a class. It keeps failing with errors/metadata/95308.xml] org.apache.sling.commons.classloader.impl.ClassLoaderFacade Dynamic class loader has already been deactivated.08.01.2016 14:02:10...

We actually need it on author. We've a process where in an event listnerer parses a pdf posted to a node, pushes that pdf to a location in DAM and sends users who are subscribed to that pdf an email based on a tag associated. However before sending an email, we need to make sure that the asset is no...

That makes perfect sense. Thanks 

But typically the 4502 port is not open for outside world. Our AEM instance in EC2 cloud and we are quering from outside. I am guessing we are only allowed access through dispatcher. Is that the only way?

We are storing some information in AEM which we want to "read" and display in our internal systems. Can we query AEM via endpoints that are exposed or we just use a .json OOB selector for the nodes. What is an ideal way to read data in AEM from an external system

Is there a quick API available to say pass two parametersUser, Path of DAM assetand returns true or false if the user has access to it?

You mean JCR-SQL2?Can you translate a sample and let me try to run it