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Programming

Sometimes, life drops a house on your code. Sometimes, it's flying monkeys. Most of the time though, the damn stuff just stops working and it's nothing so obvious as being crushed by a Kansas farmhouse or being carried away by winged primates.
on Feb 1, 2013

Web Development Tools

As a test, I re-created the HRSystem application as described in the tutorial Developing Rich Web Applications With Oracle ADF. It's more than your basic Hello World application. For starters, the HR system application accesses a database. It also takes advantage of some sophisticated ADF features, such as graphs, page flows, auto-suggest, menu options to export to Excel and display in...
on Jan 23, 2013

Community

In my last blog post, I explained how to add versioning capability to templates. Being able to create, view and restore different versions of templates is great, but sometimes it's not so easy to see what has actually changed. And we might not be as lucky as having comments about the change from the author, or they might be cryptic to the point of being useless. So let's try and add the diff and...
on Jan 22, 2013
The Foundations of Mobile First Design by Matthew Carver, author of The Responsive Web In this article from The Responsive Web, author Matthew Carver opens up a discussion of how to build a site for a mobile or small-screen device using a graphic design program, such as Photoshop. Building a site in its smallest iteration first affords the designer a lot of opportunities. By starting in a...
on Nov 14, 2012
Natural User Interaction with Drag-and-Drop by Rob Crowther, author of Hello! HTML5 and CSS3 The HTML5 spec is ground-breaking in many ways, but one of the key ways is that it specifies both the syntax of the HTML markup and the APIs you should use to manipulate the document with JavaScript. In this article from Hello! HTML5 & CSS3, author Rob Crowther discusses simulating desktop-like...
on Oct 29, 2012
From 0 to First Hit with Grails Support by Glen Smith and Peter Ledbrook, authors of Grails in Action, Second Edition Grails is a next-generation Java web development framework that generates great developer productivity gains through the confluence of a dynamic language, a Convention over Configuration philosophy, powerfully pragmatic supporting tools, and an agile perspective drawn from the...
on Oct 25, 2012

Databases

Many of the Oracle Java development tutorials that access a database do so against the Oracle HR sample schema. See, for example, Developing Rich Web Applications With Oracle ADF. There are several approaches you can take to getting the sample schema installed in the Oracle Cloud, such as Using SQL Developer or JDeveloper as demonstrated in Shay's blog. In my case, we're going to run the SQL...
on Jan 17, 2013

J2EE

Note this blog is obsolete, see https://www.manorrock.com/blog/ for the current blog Whenever the JSF runtime needs to perform a conversion it uses a Converter to do so. As explained in previous blog entries you have the ability to implement your own Converter. But does that mean you need to implement it for simple conversions? No, you do not, the default JSF converters come to the rescue!...
on Dec 26, 2012
Note this blog is obsolete, see https://www.manorrock.com/blog/ for the current blog The following blog articles are part of the JSF State Saving series Introduction to JSF State Saving The JSF State Saving APIs The JSF StateHolder API The JSF PartialStateHolder API The StateHelper API
on Dec 19, 2012
Note this blog is obsolete, see https://www.manorrock.com/blog/ for the current blog To facilitate component developers a convenience API was introduced to make it easier to implement the state saving requirements. Access to this API is made available through UIComponent.getStateHelper(). The API defines the following methods:   void add(Serializable key, Object value)   Object eval(...
on Dec 15, 2012
Not so long ago Mark Halvorson mentioned in his presentation at the Magnolia Conference 2012 that he doesn't understand why he can't have versioning for templates in Magnolia the same way he has it for content. Then I thought why not? Should be pretty straightforward. The first implementation was indeed easy. Similar to what Magnolia does when dealing with DMS documents - I just configured a...
on Nov 7, 2012
As mentioned in my talks at JavaOne San Francisco 2012, JSF 2.2 will include a new feature I'm calling HTML(5) Friendly Markup. I owe a debt of thanks to Frank Caputo for collaborating with me on ideas and code for the feature, including the code example from this blog entry. The JSR-344 Expert Group also deserves mention. In true lean fashion, this code sample is taken directly from TDD tests...
on Nov 1, 2012
Note this blog is obsolete, see https://www.manorrock.com/blog/ for the current blog The definition of a PartialStateHolder according to the PartialStateHolder interface:   void clearInitialState()   boolean initialStateMarked()   void markInitialState()   Note that the methods above do not mention that a PartialStateHolder extends from StateHolder. Be aware that if...
on Oct 18, 2012

Blogging

What is SPARQL? by David Wood, Marsha Zaidman, Luke Ruth, and Michael Hausenblas, authors of Linked Data SPARQL is the query language for RDF and Linked Data. SPARQL is to RDF data as the Structured Query Language (SQL) is to a relational database. SPARQL's name is nicely pronounceable and sounds interesting and fresh. SPARQL is interesting and fresh. This article, based on chapter 5 from...
on Dec 20, 2012
Six Ways You're Using Responsive Design Wrong by Matthew Carver, author of The Responsive Web Staying on the cutting edge of of web design can be tough, and oftentimes you only learn from making mistakes. Making mistakes is sometimes the best way to know that you are breaking new ground. In this article, Matthew Carver, the author of The Responsive Web, gives a few tips that his experience in...
on Dec 19, 2012
After a long time away, I'm raising my head again on the java.net site. I once roamed these java.net streets as a JDK developer at Sun Microsystems, then as an end-user of the JDK while at a few startups, and now...well, I'm back again. This time, I've acquired years of J2EE experience, have created my share of SaaS and web service offerings, and have way too much to say about globalization of...
on Nov 14, 2012

Distributed

I introduced myself to Konstantin Shvachko after hearing him speak in the Duke's Choice Awards BOF session at JavaOne 2012 (Hadoop was a 2012 award winner). Konstantin happened to be sitting right next to me in the audience, so before we exited the session, I asked him if we could arrange a chat before JavaOne ended. You've probably heard of Hadoop, but a great many likely don't know much...
on Dec 16, 2012
Do You Want to Get This Message? by Mark Fisher, Jonas Partner, Marius Bogoevici, and Iwein Fuld, authors of Spring Integration in Action Spring Integration allows you to selectively process messages and define alternative routes within the system. In this article, based on chapter 6 of Spring Integration in Action, you'll see how you can limit the scope of what your components will handle by...
on Oct 19, 2012

JSP

A few thoughts on how logging ought to be over at my new blog.
on Dec 5, 2012

JavaOne

Here are my slides on my "Remoting Retrospective" presentation at JavaOne 2012: Remoting Retrospective (pdf)
on Oct 26, 2012