I been looking for a good 3D JavaScript engine that will allow us to make some kind of html5 game on a mobile but none of them really work on iphones.
Today I found this: https://github.com/mrdoob/three.js#readme

Most of the examples do not work with an iphone as they have to many polygons but some do work at 30 frames per second !

These work well in iPhone (3Gs):
http://mrdoob.github.com/three.js/examples/canvas_geometry_cube.html
http://mrdoob.github.com/three.js/examples/canvas_interactive_cubes.html

This one does not work on iphone (you need to be able to click) but looks like fun. Create a 3d model here: http://mrdoob.com/projects/voxels/ When you finish creating your 3D model the url will be longer copy it to your iphone and you will see your 3d model.

Using Javascript instead of zscript  to calculate a value means you don’t have to communicate with the server until necessary but how do you send data back to the server? I could not find a complete answer so here is my answer below:

In your zul page you will need a textbox (hidden if you want)

<textbox id="serverComm" class="serverComm"></textbox>

Your Javascript put something like this to trigger event

    zk.Widget.$($(".serverComm")).setValue("value to send");
    wid = zk.Widget.$($(".serverComm"));
    zAu.send(new zk.Event(wid, 'onUser', location));

In your “GenericForwardComposer” you need to listen for the event:

	Textbox serverComm;
	public void onUser$serverComm(Event event) throws Exception {
		Event eventx = Events.getRealOrigin((ForwardEvent)event);
		String test = eventx.getData().toString();
		System.out.println(test);
	}

So you don’t make the same mistakes I made:

• don’t make your on event like “onMyEvent” I think  “onUser” is an event made just for this.
• I tried sending value without the textbox but it just did not work.

For the past few days a been getting an error when Jenkins deploys to Tomcat

unable to load xyz due to java.lang.OutOfMemoryError: PermGen space

Apparently this can occur after redeploying an application a few times and the solution is to add the options below to the JVM command line

-XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled

I will post later if it worked. will try it

Update: it didn’t work so will update later with what did work if i find out

I been doing some junit tests and suddenly the @Transactional annotation was not working. I checked all my code and I could not find why.

	@Test
	@Transactional
	@Rollback(true)
	public void testCreate(){}

After comparing other test that were working I found that the problem was the MYSQL engine that I was using did not support it so changing it to InnoDB fix it!

Here is my check list of things I install before I can start coding on anew machine

• Maven
• Eclipse
• maven plug-in useless
• SVN plug-in
• Download tomcat and add server

I tried a fresh new install with the plugin below but it just dosen’t work

http://m2eclipse.sonatype.org/installing-m2eclipse.html

bug is similar to these one:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=330896

The only way to install plug-in is to install spring plug-in first

This code is very simple but when I need it I always forget how to do it and i spend to long searching for it.

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;

import org.junit.Test;

public class ManualOverrideProcessImplTest  {

	@Test
    public void test1() {
		Calendar today = new GregorianCalendar();

		SimpleDateFormat df = new SimpleDateFormat();
		df.applyPattern("dd/MM/yyyy");
        System.out.println(df.format(today.getTime()));
	}

}

Also it is very easy to create a static String but a Date takes a little more work

    public static final Date END_DATE;
    static{
    	DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    	try {
			END_DATE = (Date)format.parse("9999-12-31");
		} catch (ParseException e) {
			throw new RuntimeException(e);
		}
    }

END

I been looking for a good example that has ZK, Spring, Spring Security and Hibernate and this example looks perfect and it is well documented

http://vs171030.vserver.de/test/pages/index.zul

the sample app is hosted here

http://vs171030.vserver.de/test/

Some more info on ZK with Spring-security

http://www.zkoss.org/smalltalks/zkspringsec1/

ZK studio only works with Eclipse Galileo and I at this time I think i need an older version of Java SDK

http://www.oracle.com/technetwork/java/archive-139210.html

So busy at work I don’t have time for this extra project. As soon as I get some time I want to read this book: http://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro

I had to setup subversion today and is always annoying trying a  few servers and plug-ins until you find something that works well or at least does the job and it is free.

Server: VisualSVN http://www.visualsvn.com/server/

Client: TortoiseSVN http://tortoisesvn.net/

Eclipce plug-in: subclipse http://subclipse.tigris.org/update_1.0.x

if you have a win7-64 then you will need to install this too

http://www.sliksvn.com/en/download