And regrettably I spent a lot of time searching through Javascript in mootools javascript, and the small 2 lines of javascript Wicket adds to the page. Finally, I decided to actually google the error (which I should have done immediately).

Low and behold, because I was inlining some Javascript for the mootools Tip plugin, Internet Explorer 6 and 7 were upset because I hadn’t given them the chance to render the entire HTML yet. Easy enough to fix, and actually cleans up the code real nice, was to either add it to the body onload, or use javascript. In my case I used mootools goodness:

window.addEvent(’domready’, Site.start);

Gotta love Google. You can also check this site for some tips on avoiding the problem in the future (especially with GMaps).

Wicket (currently undergoing incubation with Apache) is a good example of a web framework which throws caution to the wind, and has absolutely no XML needed. We here at Mystic have a lot of love for Wicket and are actively developing several projects with it currently. For another example of a no-XML web framework, check out Stripes.

Spring is a panacea of functionality for the Java Web developer. The biggest complaint we’ve heard, and made ourselves, is the bloated XML required. Just this week, “Crazy” Bob Lee at Google announced GUICE, looking to replace the IoC portions of Spring with an annotation-based approach. Again, the sans-xml approach in action.

Ant has been the build tool of choice for Java developers for many years now. Maven with the release of version 2 has gained traction as a viable replacement of the beloved Java build tools for web developers. Our own experience with it has dictated that once you get your pom.xml file in place, leave it alone, the XML is a bit odd to even deal with. Looking to move into the “no-xml” space is Gosling, which is still in its infancy, but already has several very nice features available.

With all the options available, its good to see teams thinking outside the box and pulling together some interesting new ways to solve problems in web space.

Happy Coding!

So effectively, probably according to bandwidth restrictions, you can have the song playing at your computer in one room, and in any number of external Airport Express locations.  You get a popup which displays a checkbox list of the speakers currently being broadcast to, and allows you to select more:

If more software / hardware companies thought through these seemingly insignificant additions, we’d have a life with better built software.  Simple is definitely harder, but better in the end.

Qwicket 0.4 was just recently released by Justin Lee, and it features some patches I sent over to the project for integration with Jetty and HSQLDB. So when you’re looking to start your new project with wicket, your options are:

• Download the wicket dependencies and write all your own boilerplate code
• Use the Qwicket website, create your domain model and download the boilerplate code.

Now with the Jetty and HSQLDB additions, all the dependencies needed are handled by the Ant Maven plugin, so you can get to whats important, writing the next web 2.0 app.

Items that are planned for the future: multiple persistence framework selection (JPA, iBatis), portlet support, scaffolding, and maybe someone to help with the UI

And the only thing you pass it, is a Date in a Model, and it does the rest of the setting up. So I’ll give you a quick overview of the source and what it does, and include the code as attachments to this post.

First things first, initialization:

public class DateChooser extends FormComponent {

as this is going to be a component, it should extend FormComponent, if we were adding extra functionality onto an existing form element, rather than a collection of them, we could just extend that class, easy.

public DateChooser(final MarkupContainer parent, final String id, IModel model) {
super(parent, id);

This is the constructor from DateChooser, as you can see, its not a 1.x constructor, but written against the new changes in 2.0. It would be fairly simple to convert this to a 1.2 implementation.

new DropDownChoice(this, "month", new DateModel(model, Calendar.MONTH), getMonths(), new IChoiceRenderer() { ... }
new DropDownChoice(this, "day", new DateModel(model, Calendar.DAY_OF_MONTH), getDays());
new DropDownChoice(this, "year", new DateModel(model, Calendar.YEAR), getYears());

And here are the dropdowns, as you can see from the first dropdown, there is an added IChoiceRenderer, which in the implementation basically grabs the numeric value passed in for the choices Collection, and using SimpleDateFormat, gives the text for that month.

private class DateModel extends AbstractModel {

…on to the implementation of the model, making some simple use of generics here.

public DateModel(IModel dateModel, int calendarField) {

we create a DateModel instance, and pass it the model that is being passed to this component, and in addition we pass the calendarField value, so we know what to modify in our setObject() method.

if (dateModel.getObject() == null) return null;
Calendar cal = Calendar.getInstance();
cal.setTime((Date) dateModel.getObject());
return cal.get(calendarField);

Here we implement the getObject() method, returning the numeric value for the supplied calendarField.

Date date = (Date)dateModel.getObject();
if(date==null) {
date = new Date();
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(calendarField, object.intValue());
dateModel.setObject(cal.getTime());

and here’s the setObject() method, where during the submission of the form, if a Date hasn’t been added to the model yet, for us to start setting field values on, it gets created, and then using the value passed in for Object, we set each calendarField in turn as the FormComponent get processed.

There are a few different things that can be done to enhance this:

• The days dropdown always shows 31 days, whether its got 30, 31, 28, 29, etc.
• The ordering of the dropdowns is in M/d/y, which definitely isn’t the only way to do it.

Would love comments on how to improve this, code attached.

DateChooser Component

grep -vE ‘^#’ YourResourceBundle.properties | cut -d = -f 2 | wc -w

whew.

Here’s the little snippet of ant code:

<exec executable="/usr/local/bin/growlnotify" os="Mac OS X" logError="true">
<arg line="-m 'Build has been completed'"/>
</exec>

There seems to be a similar framework out there taking its inspiration from Growl, called Snarl.

Pastebin is homage to the several applications built before it, and was built in a few hours time at most. It has the distinction of being the pastebin for irc.freenode.net’s ##java, ##wicket, and ##swing!

Mystic Lounge is a file delivery system! Ok, its just a form giving you upload capability for larger files that you otherwise wouldn’t be able to email.

We have a lot more projects in the works over here at Mystic, these are just some simple apps that we coded up to learn the internals of Wicket.

CGSResolveShmemReference : offset exceeds bounds

And it did so for several apps, Firefox, GLterm, iSync (wouldn’t even run). A simple logout and login seems to have fixed it. Nothing new as far as fixes from Software Update, so we’ll just see if this keeps up, grrr.

SELECT field1, count(*) FROM tbl1 GROUP BY field1 HAVING count(*)>1;

problem solved, a nice simple list of the duplicated rows in front of you.