February 24th, 2015 by Matyas Danter

SEO-friendly AngularJS with HTML5 pushState(), Rewrite, and twelve lines of code

ng_logo

While migrating an e-commerce application (piqchocolates.com) from Grails and Tomcat to an AngularJS, Java EE (JAX-RS), and JBoss WildFly stack, I had to make sure that the new platform has feature parity in all areas that are valuable to our business. Search Engine Optimization (SEO) is crucial for us because we primarily market our business on-line. In short, we need search engine optimized URLs, and deep linking; this article will show you how to implement both.


Matyas Danter is a Senior Consultant at Red Hat Software. He is interested in cryptography, software development awesomeness, and enterprise web applications.

January 16th, 2015 by Lincoln Baxter III

Simple Java EE (JSF) Login Page with JBoss PicketLink Security

Several years ago I wrote a tutorial about using Acegi/Spring Security with JavaServer Faces (JSF) to create a simple authentication / Login page; however, times have changed and Java EE is back in action. I would no longer consider Spring a “requirement” when building a Java EE application. More specifically, if you are using the core Contexts and Dependency Injection (CDI) framework that serves as the backbone for the entire Java EE framework, Spring Security becomes less attractive (because it’s not compatible without using Spring itself, and Spring is a replacement for CDI).

This article will explore how to create a JSF login backed by the standards-compliant CDI framework (that is included with Java EE), and the PicketLink security framework (an open-source project from JBoss). Examples for this article were sourced from the very comprehensive, and quite understandable quick-start application from the PicketLink project itself.


Lincoln Baxter, III

About the author:

Lincoln Baxter, III is the Chief Editor of Red Hat Developers, and has worked extensively on JBoss open-source projects; most notably as creator & project lead of JBoss Forge, author of Errai UI, and Project Lead of JBoss Windup. This content represents his personal opinions, not those of his employer.

He is a founder of OCPsoft, the author of PrettyFaces and Rewrite, the leading URL-rewriting extensions for Servlet, Java EE, and Java web frameworks; he is also the author of PrettyTime, social-style date and timestamp formatting for Java. When he is not swimming, running, or playing competitive Magic: The Gathering, Lincoln is focused on promoting open-source software and making technology more accessible for everyone.

December 23rd, 2014 by Lincoln Baxter III

PrettyTime 3.2.7.Final Released (Social-style time formatting for Java)

Happy Holidays!

I am proud to announce the immediate availability of OCPsoft PrettyTime 3.2.7.Final, the open-source social-style time formatting library for Java.

PrettyTime allows you to create human-readable timestamps such as “3 minutes ago” or “just now”, and is used in other open-source tools such as JBoss Tools, and JBoss Developer Studio.

Release Notes:

This release contains new translations for Turkamen (tk-TM) and translation spelling/grammar revisions for several other language bundles. Additionally, we have resolved an issue with precise time calculations that caused PrettyTime to print multiple instances of the same time unit when using custom time-unit configurations.

Get PrettyTime!

Enjoy, and happy holidays,
Lincoln and the OCPsoft team.


Lincoln Baxter, III

About the author:

Lincoln Baxter, III is the Chief Editor of Red Hat Developers, and has worked extensively on JBoss open-source projects; most notably as creator & project lead of JBoss Forge, author of Errai UI, and Project Lead of JBoss Windup. This content represents his personal opinions, not those of his employer.

He is a founder of OCPsoft, the author of PrettyFaces and Rewrite, the leading URL-rewriting extensions for Servlet, Java EE, and Java web frameworks; he is also the author of PrettyTime, social-style date and timestamp formatting for Java. When he is not swimming, running, or playing competitive Magic: The Gathering, Lincoln is focused on promoting open-source software and making technology more accessible for everyone.

September 30th, 2013 by Lincoln Baxter III

Rewrite 2.0.8.Final Released – Fixes critical parameterization bug

Bug Fixes

If you experienced problems with rule parameterization in Rewrite 2.0.7.Final, then sorry about that, and this release of [[Rewrite]] is for you: https://github.com/ocpsoft/rewrite/issues/133

Erroneous failures such as the following exception should be fixed by this release:

org.ocpsoft.rewrite.exception.ParameterizationException: The value of required parameter [s] was null.
	at org.ocpsoft.rewrite.param.RegexParameterizedPatternBuilder.extractBoundValues(RegexParameterizedPatternBuilder.java:262)
	at org.ocpsoft.rewrite.param.RegexParameterizedPatternBuilder.build(RegexParameterizedPatternBuilder.java:136)
	at org.ocpsoft.rewrite.servlet.config.Forward.performHttp(Forward.java:85)
	at org.ocpsoft.rewrite.servlet.config.HttpOperation.perform(HttpOperation.java:42)
	at org.ocpsoft.rewrite.servlet.config.rule.Join.perform(Join.java:264)

New Features


Lincoln Baxter, III

About the author:

Lincoln Baxter, III is the Chief Editor of Red Hat Developers, and has worked extensively on JBoss open-source projects; most notably as creator & project lead of JBoss Forge, author of Errai UI, and Project Lead of JBoss Windup. This content represents his personal opinions, not those of his employer.

He is a founder of OCPsoft, the author of PrettyFaces and Rewrite, the leading URL-rewriting extensions for Servlet, Java EE, and Java web frameworks; he is also the author of PrettyTime, social-style date and timestamp formatting for Java. When he is not swimming, running, or playing competitive Magic: The Gathering, Lincoln is focused on promoting open-source software and making technology more accessible for everyone.

September 11th, 2013 by Lincoln Baxter III

OpenShift Pro-tip – scaling: tail server logs on all gears of your app at once

UPDATE: I’ve filed an issue for this feature request. Until it is completed, you will need to use the command below.

So i’ve recently started working on making http://redoculous.io function better in a cluster, to support scaling out for large-scale use, and I’ve been working with http://openshift.com/ as my PaaS hosting provider. I started to run into some problems where I wasn’t sure if the cluster was responding how I wanted to.

Being a good developer, my application has logging, so I know that if I can just watch the logs as they occur (or sift through them after the fact), I can probably figure out what is wrong, and fix it.

Unfortunately, running rhc tail will tail the gear running HA-proxy, but not the gears running the actual application, or any of the duplicate gears if HA-proxy is sharing a gear with an app! You’ll just get HA-proxy logs or maybe one of your application gears if you are lucky. What to do? I ran crying for help to the #openshift channel on IRC, where the openshift gurus quickly set me straight. This is all you need to do (for the ‘jbosseap’ cartridge, at least):

rhc ssh <app> --gears 'tail -f jbosseap/logs/*';

The rhc ssh command will execute a command on each of your gears simultaneously, and stream the output to your termainal, which is just an absolute perfect match for tail -f. Note, though, that you’ll need to pass in your application name, and the path to your logs on each gear (which should be fairly easy to find out if you ssh in and take a look around. The log location is even documented for your cartridge on the openshift site: ) I retrieved it using the same rhc ssh command:

sharktop:gems lb3$ rhc ssh redoculous --gears 'echo $OPENSHIFT_JBOSSEAP_LOG_DIR';
[gear1name jbosseap-6+haproxy-1.4] /var/lib/openshift/gear1name/jbosseap/logs/
[gear2name jbosseap-6+haproxy-1.4] /var/lib/openshift/gear2name/jbosseap/logs/
[gear3name jbosseap-6+haproxy-1.4] /var/lib/openshift/gear3name/jbosseap/logs/

So in this case, the log-dir relative to the home directory is just, jbosseap/logs. Good to go!


Now, I do think that this would be much better suited as rhc tail-all (DOES NOT CURRENTLY WORK), but I’ll just have to file an issue request, or maybe take a stab at the code here if nobody beats me to it:

https://github.com/openshift/rhc/blob/master/lib/rhc/commands/tail.rb#L18
https://github.com/openshift/rhc/blob/master/lib/rhc/commands/ssh.rb#L37

I hope this helps. Good luck, openshifters!


Lincoln Baxter, III

About the author:

Lincoln Baxter, III is the Chief Editor of Red Hat Developers, and has worked extensively on JBoss open-source projects; most notably as creator & project lead of JBoss Forge, author of Errai UI, and Project Lead of JBoss Windup. This content represents his personal opinions, not those of his employer.

He is a founder of OCPsoft, the author of PrettyFaces and Rewrite, the leading URL-rewriting extensions for Servlet, Java EE, and Java web frameworks; he is also the author of PrettyTime, social-style date and timestamp formatting for Java. When he is not swimming, running, or playing competitive Magic: The Gathering, Lincoln is focused on promoting open-source software and making technology more accessible for everyone.

February 25th, 2013 by Matyas Danter

Setting up Google OAuth2 with Java

oauth_logo

For all of you who are trying to figure out how to integrate with Google’s single sign-on functionality, this article might be for you. I’ve taken the liberty of condensing all of the actual logic required to perform OAuth Google login, and provided it as a class and a JSP (seen below). In order to follow along better, I suggest cloning the example GitHub repository, and deploying to the application to your server of choice.


Matyas Danter is a Senior Consultant at Red Hat Software. He is interested in cryptography, software development awesomeness, and enterprise web applications.

November 2nd, 2012 by Lincoln Baxter III

[video] GWT and Errai UI Quickstart

I wish I had a magic GWT + Errai quickstart tutorial for you. But in fact, I do! Check out this video, and the tutorial below, to start your adventure with client side HTML5 templating in GWT!


Lincoln Baxter, III

About the author:

Lincoln Baxter, III is the Chief Editor of Red Hat Developers, and has worked extensively on JBoss open-source projects; most notably as creator & project lead of JBoss Forge, author of Errai UI, and Project Lead of JBoss Windup. This content represents his personal opinions, not those of his employer.

He is a founder of OCPsoft, the author of PrettyFaces and Rewrite, the leading URL-rewriting extensions for Servlet, Java EE, and Java web frameworks; he is also the author of PrettyTime, social-style date and timestamp formatting for Java. When he is not swimming, running, or playing competitive Magic: The Gathering, Lincoln is focused on promoting open-source software and making technology more accessible for everyone.

September 19th, 2012 by Lincoln Baxter III

How to @Inject Enum values into CDI beans

I was recently asked how to Inject a Java Enum into a bean constructor using CDI. This turns out to be a fairly interesting situation, because enums are not usually available for Injection.


Lincoln Baxter, III

About the author:

Lincoln Baxter, III is the Chief Editor of Red Hat Developers, and has worked extensively on JBoss open-source projects; most notably as creator & project lead of JBoss Forge, author of Errai UI, and Project Lead of JBoss Windup. This content represents his personal opinions, not those of his employer.

He is a founder of OCPsoft, the author of PrettyFaces and Rewrite, the leading URL-rewriting extensions for Servlet, Java EE, and Java web frameworks; he is also the author of PrettyTime, social-style date and timestamp formatting for Java. When he is not swimming, running, or playing competitive Magic: The Gathering, Lincoln is focused on promoting open-source software and making technology more accessible for everyone.

August 22nd, 2012 by Lincoln Baxter III

[video] Enhance developer productivity, usability, and security

Java EE is already the perfect solution for complex business/enterprise systems and provides all the tools and foundations required to deliver scalable, performant applications for a wide variety of customers and clients.

But how does the end user experience stack up? How easy is it to navigate through your Website? Is your code full of nasty navigation logic? Are your links clear, transparent, and informative? Do you find yourself adding ‘?query=parameters’ in order to serve dynamic content from your application? Can you ensure that you are not leaking information in your URLs, and that your applications are secure from URL-based attacks? Are your old links making it difficult to migrate or integrate a legacy application to a new one?

These are all things that URL rewriting can help with, and if you are uncertain about any of these questions, this talk is for you. Watch this session from JAXConf 2012 and see what’s possible with the power of URL-rewriting.

For more information on the [[Rewrite]] project, visit the project homepage at [[Rewrite | OCPsoft]], and be sure to check out all of the other cool Java open-source projects while you’re here.
Lincoln Baxter, III

About the author:

Lincoln Baxter, III is the Chief Editor of Red Hat Developers, and has worked extensively on JBoss open-source projects; most notably as creator & project lead of JBoss Forge, author of Errai UI, and Project Lead of JBoss Windup. This content represents his personal opinions, not those of his employer.

He is a founder of OCPsoft, the author of PrettyFaces and Rewrite, the leading URL-rewriting extensions for Servlet, Java EE, and Java web frameworks; he is also the author of PrettyTime, social-style date and timestamp formatting for Java. When he is not swimming, running, or playing competitive Magic: The Gathering, Lincoln is focused on promoting open-source software and making technology more accessible for everyone.

August 21st, 2012 by Lincoln Baxter III

Get started quickly with Hibernate Annotations and JPA2

Getting started with Hibernate and JPA (Java Persistence API) can be tricky, but this step-by-step tutorial explains exactly what needs to be done to set up your application to use this technology. This chapter covers very basic mapping and persistence.

When we are finished with this tutorial, we will have a standalone Java SE application with database connectivity. This article is part of a series: Guide to Hibernate Annotations.

Lincoln Baxter, III

About the author:

Lincoln Baxter, III is the Chief Editor of Red Hat Developers, and has worked extensively on JBoss open-source projects; most notably as creator & project lead of JBoss Forge, author of Errai UI, and Project Lead of JBoss Windup. This content represents his personal opinions, not those of his employer.

He is a founder of OCPsoft, the author of PrettyFaces and Rewrite, the leading URL-rewriting extensions for Servlet, Java EE, and Java web frameworks; he is also the author of PrettyTime, social-style date and timestamp formatting for Java. When he is not swimming, running, or playing competitive Magic: The Gathering, Lincoln is focused on promoting open-source software and making technology more accessible for everyone.