Raible Designs

No Fluff Just Stuff

I had lunch today with Jay Zimmerman of No Fluff Just Stuff. I always enjoy getting together with Jay because he's from Montana and Montanans are generally nice folks. Among other things, he asked if I would be interested in speaking at a NFJS event or two. I said I'd think about it. However, I'm strongly considering it since it would probably be a good marketing tool.

I probably wouldn't do any events until sometime this summer. Now I just have to figure out what I'd speak on...

Time for new business cards

The last time I got Raible Designs' business cards was when I first started the company - way back in 1998. I still have a couple boxes left, but with all the networking opportunities in my future - it's about time I got some new ones. So I'm looking for recommendations of good business card designers/printers. Maybe I should host a contest and give away an iPod to the winner? ;-)

As a sidenote, what do you think about putting the cert icons (i.e. MSCE and SCJP) on business cards? I think it was cool when I first got certified, but now it seems pointless. It just takes up space and would probably take away from a nicely designed card.

How do you get around Struts' single inheritence model?

Adrian Lanning sent me an interesting e-mail yesterday. He's looking for a better way to extend Struts. I thought I'd post his message here and see if anyone has ideas.

I am a big struts fan and use it for my projects but I think there is something fundamentally wrong with the design. The real crux of the matter may be that Java is a single-inheritance model and Struts is designed more for multiple-inheritance.

Example 1.
Complexity when trying to use "extensions" to struts that have their own RequestProcessors. Such as my extension for roles (mentioned below) used together with Asqdotcom's ActionPlugin which is a plugin but still uses its own RequestProcessor, plus another hypothetical extension which has it's own RequestProcessor. Basically the only way to use them all is to modify the source of one or two to extend the others which doesn't seem like a good design.

Example 2.
Extending LookupDispatchAction to include per-method validation (set in struts-config.xml). Basically same problem. Need to combine functionality of ValidatorAction and LookupDispatchAction but can't extend from both. Have to modify source. Actually Brandon Goodin wrote this already (I find it very useful). It's called ValidatorLookupDispatchAction.

I know this is a common issue with single-inheritence models/languages. It would be really easy to extend Struts in a multiple-inheritance model.

* THE POINT *
I was just wondering if you knew of a better way to design when dealing with single-inheritance models to avoid problems such as these.

Personally, I don't find the need to extend Struts that much, so this is not much of an issue for me. I think Struts 2.0 will solve many of Struts single-inheritance design by declaring interfaces for all core components. I wonder when 2.0 is roadmapped to ship - sometime in 2006? ;-)

Later: The article, Security in Struts: User Delegation Made Possible, by Werner Ramaeker provides a good example of a Struts extension strategy.

Upgraded to Tomcat 5.0.19 + thoughts on Resin

I spent 5 minutes tonight and upgraded this site to use Tomcat 5.0.19. Everything seems to be working fine, save for a couple of new messages in catalina.out:

24-Feb-2004 7:48:34 PM org.apache.jk.common.HandlerRequest decodeRequest
WARNING: Error registering request
24-Feb-2004 7:48:44 PM org.apache.jk.common.HandlerRequest invoke
INFO: Unknown message 0

After talking with Rick last weekend, I'm going to try and migrate to Resin as my main dev appserver. The motivating factor was hearing Resin and Orion are so much faster than Tomcat. Sure I've heard this many times before, but mostly from Jakarta-haters. Rick's opinion holds a bit more water for me. Of course, he mentioned that his findings where based on Resin 2.x and Tomcat 4.x. I'd love to see a performance comparison between the latest versions of Orion, Resin and Tomcat.

I hope to modify AppFuse so it can easily run with Tomcat or Resin with a simple property switch. I've already started that process, but I hit a small snag.

I also hope to migrate this site to Resin 3.x soon. If nothing else, it'd be nice to learn more about Resin - and we all know the best way to learn a new technology is to interact with it on a daily basis.

NYC: DisplayTag and Struts Menu

At the NYC Conference, I'm going to be talking about The Display Tag and Struts Menu. I figure the best presentations are ones that cover new features or introduce something new. So I'm hoping to add the following features to the two libraries in the next month. Please let me know if there are other's you'd really like to see - or ones that'd make the audience go *wow*.

DisplayTag: I'd like to add this pagination enhancement so you can get easy interaction between the records displayed and the records fetched. I'd also like to see sorting by property, not be contents. Lastly, I hope to add an example that does CRUD on a table using JSTL and simple checkbox and input fields.

Struts Menu: A lot of users are interested in seeing a menu that's created from a database table. This shouldn't be too difficult because examples are out there. I was also thinking of adding support for the Joust Outliner, but it doesn't look like it's still developer or actively used. If there's interest, I'll add it.

If you think I'm blogging a lot today (don't you work Raible?), it's because I'm on babysitting duty. Abbie is sick with a fever and Julie had to go to work - so my work day starts when she gets home. I've got the little one tied up with a little Winnie the Pooh action right now...

Later: The DHTML Kitchen has some nice menus, but they're not free. Anyone know of open source menus like these?

Speaking at MySQL User Conference

I've been accepted to present a 30 minute session on AppFuse at the MySQL User Conference in Orlando! I would have never thought to even apply, but Mark Matthews sent me an e-mail and convinced me to give it a shot. Now I'm pumped that I did. Here is the abstract for Easy Java Development with MySQL:

Using my open source AppFuse application, I will show how easy it is to setup a MySQL database using Ant, create the Tables using Hibernate/Ant and populate it using DBUnit.

Other events I'm speaking at in the next couple of months include a one-day conference in NYC on Developing Webapps using Open Source Tools and a Basic Concepts presentation on AppFuse at Denver's JUG in June.

Now the only question is - should I use PowerPoint/Keynote or enhance my simply preso app to write these presentations?

Tucson Rocked - long live the Saguaro

We arrived back in Denver safe and sound this evening. The only casualty was we forgot Abbie's pack n' play in DIA's parking lot. Doh! Maybe we can call and get it back tomorrow.

Erik Hatcher recommended some good spots to check out. We had dinner at El Charro's in downtown Tucson. We also spent a day touring Saguaro National Park and the Desert Museum. We played lots of Pinochle and my Aunt and Mom had a great time with Abbie.

My Aunt Mary Craig is quite a woman. She grew up in Montana during the great depression and her mom and dad (Hilma and Hank) were gold miners. They never made any real money off of it, but my Aunt has many stories about living in mining camps and helping her dad out when she was a kid. Her most amazing feat was going back to school in her 40s, getting her CPA and becoming the head of the Department of Revenue for the State of Montana. After that, she went on a speaking tour of the US about her childhood and how she became of the of the top 10 business women in Montana (at the time).

Meeting with Rick Hightower was a real treat and I got a lot of great ideas, and a ton of motivation from our meeting. I expected to sip Starbucks for about an hour, but time flew and we ended up talking for around 3 hours! Heckuva guy - he had a lot of knowledge and a great perspective on the whole independent consultant lifestyle I live.

Unlike most vacations where I drag myself back to the computer, I abandoned all electronics for the weekend and now I'm super motivated to pound out some code this week. My sister flies into town a week from today for a few days, so I've only got 7 days until the next vacation begins. Family Rocks!

Heading to Tucson

We're leaving in a few hours to go to Tucson, AZ for the weekend. We're flying to see my Great Aunt Mary and her friend Judy - and my Mom is going to meet us there as well. Hopefully it'll be a nice relaxing weekend since there will be 3 ladies fawning over Abbie. I'm also meeting up with Rick Hightower since he lives there. The snow is supposed to start in Denver this afternoon - good timing eh?

I've never been to Tucson, but here's a webcam so you can checkout the weather there while I'm gone. Have a great weekend, I'll be back on Monday night.

Fast Company's Fast 50

Via Erik, Six Apart makes Fast Company 50. Personally, I don't give a rat's ass about Six Apart, but I do think it's cool that Chipotle made the list. The first Chipotle is right next to DU on Evans and we currently live a mere 6 blocks away from it. In fact, I was just telling Abbie how good it is when we walked by it this evening.

Wanna use Spring in your AppFuse-derived webapp?

Yesterday, I ported an AppFuse application (based on 1.3) to use all the latest stuff I've done in the last month. Basically, I just renamed and reorganized the directory structure, integrated Spring to bind everything together, and implemented the new Remember Me functionality. If you want to upgrade your (AppFuse-derived) webapp to use Spring, I wrote up an article on how I did it. It's quite a process, but hopefully this article will make it a lot easier. Now I can use Tomcat 5 as my primary app server (vs. Tomcat 4) - sweet!