Blogs

Okay, so I'm like working on a bigger project that will be a bigger blog sometime soon, but I really need a current Liferay DXP tarball. When I say current, I mean that it must have: The latest version of Tomcat 9 Fixpacks (and possibly hotfixes) applied. As a DXP client, this just won't be available to you for download. Even if you are just using Liferay CE,...

I was recently fishing for topics to build potential sessions for Devcon 2019 (you're going, right? ;-) ) and one community member suggested the topic of Service Trackers. While I'm not sure I could fill a whole session on service trackers, I think I can certainly fill a blog entry about them... What Are Service Trackers The best way I can describe service trackers, well they...

Liferay 7.2 has an updated Service Builder that introduces some changes that we should all be aware of. From a Dependency Injection perspective, not really much is going to change for us when it comes to consuming the services. Just as we did for 7.0 and 7.1, we will still have a member variable in our @Component for a service instance and then @Reference inject it in. As long as...

We, as software developers, usually need to reach our users through different channels: from web sites to applications running on smart devices (smartphones, smartwatches, ...) or even through IoT devices… and all those solutions, oriented to the different ways that nowadays the users can interact with our systems, share the same content and features. Even if we are just creating a...

Quite some time ago I was working with a client that had built web service clients as OSGi modules and leveraged JAXB. During load testing, we found that after many hours of heavy use, the Liferay nodes would stop serving traffic and, for all intents and purposes, would die.  Threads would get hung, blocked waiting to load a class from the web service client, and eventually...

So if you've been monitoring your logs, it is quite possible you're seeing NoSuchLayoutExceptions related to browserconfig.xml. If you are seeing them, it's because your users are running IE 11 and they've just opted to "Pin To Start" for your site (a good thing, I guess). So what's going on? Well, IE11 has this new feature where it can add your site as a tile in the Windows 8...

A SysAdmin came up to me and said he was having issues starting Liferay DXP 7.0, a bunch of CNFEs were coming up at startup. I found that they were set up to use Wily for monitoring their JVMs, and it was those classes that were generating CNFEs. In general, when you add the -Djavaagent=XXX parameter onto your app server's startup command, you're enabling an agent which will...

In Liferay 6.x, scheduled tasks were kind of easy to implement. I mean, you'd implement a class that implements the Liferay Message Bus's MessageListener interface and then add the details in the <scheduler-entry /> sections in your liferay-portlet.xml file and you'd be off to the races. Well, things are not so simple with Liferay 7 CE / Liferay DXP. In fact, I...

Let me say that again: Content Creation is Not a Development Activity! Pretty strong statement, but for for those considering Liferay as a platform it's really an important concept, one that lives in the core of Liferay. Note: This is really a different kind of blog post for me. I prefer to keep things technical and discuss practical solutions to ...