AEM 6 and Classic UI Mode

Well fellow AEM 6 developers, I have another tiny AEM gem for you. Are you currently working on an AEM 6 project but are only targeting the Classic UI? If so, here are two quick OSGi configuration changes that will keep you within the Classic UI interface.

To configure Classic UI as the default mode for AEM 6, configure the WCM Authoring UI Mode Service in the Felix console. Simply change the default authoring UI mode from TOUCH to CLASSIC

I am not a fan of runtime changes in the Felix console, so I recommend creating a run mode for your application. Your run mode should be define in /apps/<your application>/config/ and should look as follows:

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling=""
    xmlns:jcr=""    jcr:primaryType="sling:OsgiConfig"

I also recommend changing the default root mapping so that content authors are directed to the Welcome screen following login. As before, create a run mode for your application at /apps/<your application>/config/

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling=""
    xmlns:jcr="" jcr:primaryType="sling:OsgiConfig""/welcome.html" />

I hope this helps!

AEM 6 and getServiceResourceResolver()

For those of you fortunate to work on an AEM 6 project, I am sure that you are starting to discover those subtle differences between AEM 5.x and 6.x. Well, I discovered my first painful difference while moving from ResourceResolverFactory.getAdministrativeResourceResolver() to ResourceResolverFactory.getServiceResourceResolver(). Other than the new requirement to configure Apache Sling Service User Mapper Service, the big difference is that you can't use the returned ResourceResolver for long running services anymore. If you do, you end up with a ResourceResolver that has a view of the repository at the time when the resource resolver was created. When switching over to ResourceResolverFactory.getServiceResourceResolver(), remember to close your resource resolver as soon as you're finished with it. 

The Javadocs indicate this, but in my experience most developers rarely take the time to read the documentation.