Here are the presentation files and sample flex apps from my presentation on "Charting with CF and Flex" on Friday June 20, 2008.

RIA328_Charting_with_CF_and_Flex.zip (5.5M)

In a day where spam is an increasingly huge issue, I have been using Google's email which does great at spam filtering.  There is of course once major exception, and that is Russian or Cyrillic spam emails.  Google's filters don't seem to be able to block those emails, and if you have had an account as long as I have, the volume of spam is bad.  I was getting 50-100 Russian spam emails every day.

I have experimented and come up with a solution using Google's filter feature.  It has taken several tries to get the right settings to actually be effective.  Here is how to rid yourself of the bad Russian spam!

1. Log into your account in Gmail
2. In the upper right part of your screen, click on "Settings"
3. On the settings page, click on the "Filters" heading
4. Click the "Create a new filter" link
5. In the "Has the words" box, copy and past in the contents from this Microsoft Word document (I tried to paste the actual characters here, but they got all screwy)
6. Click the "Next Step" button
7. Choose how you want to handle them (I have it skip the inbox, and apply a custom label, this way I can go back and actually flag those messages as spam later)
8. Click on the "Create Filter" button to save the changes!

This has really worked well for us, eliminating about 90-95% of the Russian spam.  If you find any "tweaks" to this are effective, let me know.

I have been working to make my Flex applications more and more modular.  Flex now supports modular development with the ModuleManager so you can dynamically load and unload modules at runtime.

There is reasonably good documentation online for how to load and unload basic modules, and even how to set public vars and call public methods defined in modules after they are loaded.  There were not, however, any examples (that i could find anyway...) for having a module dispatch a custom event class, so that your application can catch and respond to the event. 

Here is a basic outline of an app, a custom event class that stores some bits of information, and a module that demonstrates dispatching the custom event class:

The main Flex app "SimpleModuleEvents.mxml" :

The module "Dispatcher.mxml" :

The custom event class:

Hope this is helpful, as it is a very bare bones explanation of how to modularize your code and use custom event classes to pass around useful data. 

Ciao

There have been some nice new "advertiser sponsored" free music sites to pop up over the last few years.  One of the most promising is Spiral Frog (http://www.spiralfrog.com).  The downside to pretty much all of them has been that songs downloaded from these sites are digital rights managed (DRM) which is used to ensure that only licensed users can listed to the files.  Basically once you download one of these songs, you can't email it to your friend and let them listen -- they will get a license error.

This technology for digital rights management is essential so that the already struggling music industry doesn't lose what little money it is making.  It used to make a killing on CD sales, but not anymore thanks to illegal music distribution online.

So, the upside to DRM is that you can't give illegal copies to your friends.  The downside is that if you use a service like Spiral Frog (which uses Microsoft Windows Media Player for DRM and playback), then you cannot put those files on your iPod or iPhone.  Hey, the technology isn't perfect... YET.

There is a solution! (you knew i was going there, right ?)  This requires you to be a morally responsible person however, and any "gray" areas on this are up to you to decide on.  I am not, in any way, endorsing this information, I am only providing it as a public service.

There is a nifty open source product called AnalogWhole (http://analogwhole.com) which removes DRM from your windows media audio files (it doesn't support video at this time).  Once you configure AmalogWhole, it will watch your incoming folder for new music files, and automatically convert them to plain MP3 files _AND_ add them to your iTunes music library (f you want).

AmalogWhole isn't a perfect program yet -- it actually plays back the original, and does a digital recording to a new audio file, so the speed is 1-to-1, your computer has to play back each file.  It is a little quirky in that your volume level of your speakers (from within windows) affects the recording level, so it takes a little experimentationi.  After all the effort however, what you end up with is a clean MP3, automatically added to your iTunes library, ready to sync to your iPod and it sounds pretty good.

Once you have a process down like this, it allows you to take advantage of advertiser-sponsored free music sites like SpiralFrog, and then also add that music to your portable audio player, just as we _should_ be able to.  All it requires is discipline to not distribute those unprotected audio files, and thus making the music industry we all love collapse on itself.  You can do that right ?

Ciao, and stay LEGAL !

I am finally back in the office after CFUN Europe (and some travelling afterwards).

My apologize to all those who have been asking about my presentation files.  They are posted below.

cfun_europe_08_recursion.zip

cfun_europe_08_xml.zip

Overall I thought CFUN Europe was very successful.  There were a lot of presentations on CF+AJAX, and a lot of focus on integration between CF and Flex -- very valuable stuff for any CF coder.

If you missed it, you should plan to come to CFUN in Washington DC on June 18-21. See www.cfunited.com for more info.

I found myself needing a text editor that displayed line numbers for a Flex project, and despite searching online, couldn't find a Flex 2 component that did what I wanted.  So like a good programmer, I whipped one up. 

Here it is, in all its buggy glory.  I would love some feedback, and perhaps some of you Flex gurus would like to contribute.  If so, e-mail me.

 

On a clean multiserver install of ColdFusion 8, I was surprised that <cfapplication> was throwing an error.

The error I was getting was:

An error occurred in creating the presentation. java.io.FileNotFoundException: C:\JRun4\servers\SERVER_NAME\cfusion.ear\cfusion.war\WEB-INF\cfusion\lib\preso\viewer.swf

Upon investigating, it seems that the primary JRun server for ColdFusion (usually called "cfusion"  had the proper files in the expected places, however each of the additional servers that were created had several directories missing from the last "/lib" folder, including the "preso" folder mentioned above, which caused the issue.

The missing directories were:

• preso
• thirdpartytools

Directory stats also show that the cfusion server has 187 objects, while the new instances had only 179 objects.  Take the above two directories out, and you are left with 6 other files that are apparently missing.  I haven't spent the time to figure out which ones, because everything else seems to be working right now.  I just find it curious...

Anyway, copying the "preso" folder from the cfusion server to your manually created server fixed the problem.  If you run a clustered server, don't forget to copy to each server in your cluster.

CF United Europe is coming up people!  It looks to be a good show.  I will be there and speaking on XML and Recursive programming.

Register for CFUnited Europe by Jan 10th 2008 and save $100 off the base registration rate. Also as a group discount, register 3 for the price of 2, for more details contact info@cfunited.com

Most impressive combination of technologies here.  This is a great example of pooling information together. 

http://www.housingmaps.com/

From the incredible minds at Google :)

http://code.google.com/apis/chart/

This impressive little library lets you generate PNG chart files from a single URL request string.  Since people typically need to pass lots and lots of data for charting, they came up with a really creative way to compress the values, and provide a javascript snippet for automating the process.

So the nifty chart you see to the right is a "hello world" app using their API.  It ultimately comes down to a simple URL request of:

http://chart.apis.google.com/chart?cht=p3&chd=s:hW&chs=250x100&chl=Hello|World

Quite impressive and easy to use!

While this doesn't provide the stellar interactivity and depth of integration that Flex charts do, it certainly provides a way to do nice looking charts with a quick turn-around. 

According to their docs, you can freely use this so long as you don't regularly exceed the 50,000 hits per day limit at which point they may block you.  I think most of us will not be hitting it quite this much.

Some samples:

Not too long ago I posted a coldfusion component to handle compression for rar and 7z.  Here is a report from the first time using it.

For reference, here is the important info:

Download version 1.0 -- lib_rar7z_cfc_v100.zip

This is of course released as-is no warranty, no support, blah blah, and eventually if people like this, I will officially make it open source.  Its a small piece of code, so who knows how useful it will be.

There are a few sample pieces of code to help figure out how to use is.  It is relatively easy:

Compress a file:

<cfinvoke component="lib.rar7z" method="compressFile" returnvariable="compressFile">
    <cfinvokeargument name="SrcPathAndFile" value="#ExpandPath(".")#\myfile.dat">
    <cfinvokeargument name="ArchivePathAndFile" value="#ExpandPath(".")#\myfile.rar">
    <cfinvokeargument name="VolumeSize" value="3500">
    <cfinvokeargument name="Timeout" value="90">
    <cfinvokeargument name="Engine" value="rar">
</cfinvoke>

List an archive's contents:

<cfinvoke component="lib.rar7z" method="listContents" returnvariable="listContents">
    <cfinvokeargument name="ArchivePathAndFile" value="#ExpandPath(".")#\myfile.rar">
    <cfinvokeargument name="Timeout" value="90">
    <cfinvokeargument name="Engine" value="rar">
</cfinvoke>

Extract files from an archive:

<cfinvoke component="lib.rar7z" method="extractArchive" returnvariable="extractArchive">
    <cfinvokeargument name="ArchivePathAndFile" value="#ExpandPath(".")#\myfile.rar">
    <cfinvokeargument name="OutputDir" value="#ExpandPath("./extract")#">
    <cfinvokeargument name="Timeout" value="90">
    <cfinvokeargument name="Engine" value="rar">
</cfinvoke>

I initially tried using the component with the "rar" engine, which maps to a 16-bit dos program called "rar.exe."  This didn't work out for me since it apparently only supports 8.3 filenames, and I needed support for long filenames. 

Second, I used the 7-zip executable "7za.exe" which is the command-line version of the 7z tools.  This supported long file names without any problem, and is behaving the way I expected.

The part I didn't expect was just how long it takes to compress a file.  I compressed an 80M database dump file using 7z, and it took 5-10 minutes...  this is running on a machine with 4 P4 hyyperthreaded processors and 4G ram...  thats a LONG time.

So, moving forward, I would NOT recommend use of the "rar" engine, but rather stick to "7z" if you need support for long file names.  Also, if you are compressing large files, be sure to assign a long enough timeout to make sure that CF doesn't prematurely terminate the process.  Other than this, it worked great!  It did exactly what I expected the first time I put it in use.

I have recently purchased a Yugo 59/66 SKS rifle.  I have decided that I would like to refit this rifle with some modern parts, which are readily available at shows and online.  The problem with this is that ATF regulations state that you cannot disassemble and re-assemble this rifle legally unless you re-assemble it with less than 10 imported parts (it has 14 or 17, this is debatable).  That means you need to buy US made parts so that the total number of imported parts is 10 or less when you re-assemble it.

There are a lot of pages out there that help explain this to some degree, but nearly all of them have to do with the Norinco (Chinese) variant of the rifle.  The Yugo version, which I have, is much more 'interesting' in that it has night sights and a grenade launcher.

It has become a ridiculous process to figure out what the exact part list is for a Yugo 59/66 SKS.

The most definitive information I have found is below.  I am quoting this source.

I have long been a supporter of using Ghost for imaging disks.  See a previous post on how to use Ghost 2003 with Windows Vista.

I have never, however, been able to find a replacement for Linux... until now.

I just came across this -- and pardon me if this is old news -- which seems very promising!

http://www.feyrer.de/g4u/

This is an open-source project based on NetBSD that allows you to boot from a CD, connect to an FTP site, and backup-to-image, or restore-from-image to the local drive, using the FTP site as the image storage location.  This sure sounds like what Ghost should have been!

I intend to try it out very soon.

No, this isn't an "original" rant...  just spreading the word on an already available, and excellent eye-opening writeup of why CF doesn't fit the "mold" of other "programming languages" and why it isn't a simple process to say "this is free, why isn't CF free?"

Anyway, stop reading my blog, and read this instead:

http://www.cfinsider.com/index.cfm/2007/11/10/Things-ColdFusion-is-not-and-Why-ColdFusion-isnt-free

Thanks to CF Insider!

I have finally put a copy of vista on my machine, and I have a few observations:

• It is pretty
• It is different enough from Windows XP that some things are hard to find
• The continual nagging and "are you sure" questions drives me crazy
• It is slow

I wouldn't call it more efficient, but it is the newest windows, so we all better get confortable with it.

Here are some _wonderful_ resources I found online that allowed me to get vista running on my pc at about the same speed as winxp, and I am pleased to say that it is a bit more stable than XP as well.  After all, vista is based on the windows 2003 kernel, which has been very powerful and reliable.

Turn off the nagging:

The continual popups are from a new service called "UAC" or User Access Control.  Read this article (and google it for more info) and learn what it is, and deceide if you want to turn it off.  It may make your PC more vulnerable, but I will accept that risk.  What you do is up to you.

http://www.mydigitallife.info/2006/12/19/turn-off-or-disable-user-account-control-uac-in-windows-vista/

Turn off services, change the UI, etc, etc.

Here is a great guide to streamlining Vista, turning off services that Vista assumed you wanted, and some other neat tricks like using a USB memory key to speed up application access.  I was thoroughly impressed with the impact these changes had.

http://www.extremetech.com/article2/0,1697,2110595,00.asp

Overall, I was very hesitant to move forward using Vista.  It seemed too bulky and multimedia heavy to be productive.  Plus windows explorer is different!!  (I don't know why MS did this -- poor decision in my opinion).  These updates will help to have a manageable and usable windows vista machine.

Happy computing