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AEM 6 ships with a new repository, CRX3 which is based on Apache Oak, a subproject of the Apache Jackrabbit project.  This repository promises significant performance increases over CRX2, however it does require a bit more work to setup.  Unlike CRX2, CRX3 requires you to explicitly declare which fields will be indexed.  If a field is not indexed, you will see an error like the one below in the error.log and significant performance degredation: 16.01.2015 13:56:45.206...

If you're anything like me, you may accumulate a sizable number of branches locally over time. Based on old standards and what I'd consider some good practice, my branch names always follow the same format: myLDAPName/Issue# For example, jboyle/1641. While in my case this maps directly to a JIRA issue and is short and easy to type, it isn't very descriptive and after creating a number of branches, it becomes challenging to remember what branch...

So let's just say you are designing an API which allows both reading and writing of attributes for a Resource.  Of course, you want to use consistent code to persist the values, so you use the (relatively) new CRUD features in the Sling API to both get and set the property values.  To save code, you might use a ModifiableValueMap for both operations, which works great in author as an administrative user.   The Problem At some...

You can implement some interesting stuff in Sightly, the newest templating language for Adobe Experience Manager, including Tower of Hanoi.  At the same time, there are a few practical applications which are not available in Sightly, including accessing request scoped variables in Sightly.  While Gabriel's suggested approaches in the Stack Overflow post are absolutely correct in this situation, there are still certain situations where request variables can be very useful.   A good example is for sharing a variable...

Recently, I was creating integration test following this article. Everything was working out nicely but then I couldn't figure out how to create anything other than a String data type in the JCR. I was specifically trying to create a Date data type. I found a nice document about the sling post servlet and Date properties. This showed the proper format for Date String but all the examples where for HTML forms. I tried formatting...

Recently (read early this afternoon) I was doing my best to beat my head against the desk until something useful spilled out.  The problem I was having was with a relatively old, but frequently updated codebase where recently certain random services would not start. The project had recently updated from Java 1.6 to Java 1.8 and at some point, the problem occurred but had not been noticed immediately as it only affected a small subset of...

Recently, I finally had a chance to leverage Sling Models for a new project.  If you are not familiar with Sling Models, they allow developers to inject methods and fields based on resource properties, other resources and OSGi services.  For those developing in AEM 6, Sling Models are available as part of the default installation, for those on older versions of AEM / CQ5, Sling Models are available as downloadable bundles on the Sling website.  Sling Models...

It's no secret that CQ/AEM Workflows are quite powerful, but what happens when the default process steps aren't what you need? In a case like this you need to create your own custom process step. In this article I will detail the steps you need to take in accomplishing this. 1) This tutorial is going to be completed in java, drill down into the Java portion of your code base and create a java file....

JCR-SQL2 queries are useful items in every AEM Developer's toolbag.  They are relatively quick, aren't deprecated and have a familiar SQL like grammer. JCR-SQL2 queries can be invoked from the JCR API: Session session = ...QueryManager queryManager = session.getWorkspace.getQueryManager();Query query = queryManager.createQuery("{QUERY}", Query.JCR_SQL2);QueryResult result = query.execute(); or through the Sling API: ResourceResolver resolver = ...Iterator<Resource> result = resolver.findResources("{QUERY}", Query.JCR_SQL2); Although there is an official specification for JCR-SQL2, there aren't a ton of really good resources out...

Cross Site Scripting or XSS represents a serious threat to site owners and users and can be very difficult to properly prevent, especially given the weak tooling available in the JSP specification. Many times, developers depend on the <c:out /> tag from JSTL, however this tag does not provide robust XSS protection. On Friday, the Apache Sling Project released a new version of the Sling JSP Taglib, version 2.2.4 which contains new functionality help to...

In this article, I'll briefly illustrate a major difference between CQ 5.6.1 and AME6 when it comes to Users and Groups permissions. I am not fully aware the scale or the extent of the impact this might cause on upgrading from CQ 5.6.1 to AEM6, but I thought it's worth sharing.   CQ 5.6.1 AEM6 In CQ 5.6.1, users/groups permissions are stored in a JCR node called rep:policy under the node that was assigned right(s) to a...

In my previous blog post, I discussed getting Apache Axis 1.4 working in AEM. One of the more interesting things about Axis 1.4 is that it's not easy to log the actual request from the client and response from the server.  You can configure the LogHandler, however it is somewhat problematic in AEM to configure due to the classpath complexity in OSGi and it will only log to the system outputstream.  This is problematic in...

Despite doing several Web Service implementations over the last couple years, I have successfully avoided using Apache Axis until now.  A client's Web Service implementation was incompatible with the code generation tools available in more modern Web Service clients, such as Apache CXF.  While there is documentation around using Axis 2 with AEM, there isn't really anything available for Axis 1 in AEM, which is what I needed to use.  So, I rolled up my sleeves...