What if in Websphere Studio Application Developer you have set a workspace as default and now you want to change it?

Setting a workspace as default make WSAD not asking you for which workspace to use. If you have to reset the option execute WSAD from command line with the -setworkspace parameter.

On windows systems the location probably is the following

C:\Program Files\IBM\WebSphere Studio\Application Developer\v5.1.1>wsappdev.exe -setworkspace

Maybe this could even work for pure eclipse but I’ve not tested it.

It could happen sometimes (more often when working with images) that a java program hang up with a java.lang.OutOfMemoryError. This generally happen because there’s not enough space in the heap memory for storing objects.

You can change the heap size or by the Java Control Panel or by the command line. I prefer this last one and here is the syntax

java -Xms<startHeapSize> -Xmx<maximumMeapSize> …

By default values should be -Xms32m -Xmx128m but I often solved with this values

java -Xms32m -Xmx512m …

Let’s talk again about script-fu. file-glob is a beautiful function that retrieve all the files within a specified directory with the specified pattern. But if you have to deal with case sensitive file system, soon or late you’ll bump in the problem that *.jpg is different from *.JPG.

In order to solve this it’s enough to think about regular expression. Yes, it seems that file-glob make use of regular expression for file pattern matching. So if you, for example, have a patter like /home/edivad/img/*.jpg and want a case insensitive matching you can use a pattern like /home/edivad/img/*.[jJ][pP][gG].

I did it again. For the photo training I’m attempting to, I need to show at the final year test a portfolio for the reportage subject.

I have to show 30 photos paged in a portfolio. So in order to speed up the pagination work, I did a gimp script.

This will process the opened image and generate a new file with the paginated photo and a caption.

Here is the code; pdf as usual damn wordpress.

Again, I’m not proof in script-fu so if you encounter something wrong or that can be done better, use the comments

I’m a bit abstracted and usually works with a lot of opened files. So it happens sometimes that in the rush of job i ended editing a file instead of another.

I’m also usual to open existing files I wrote in order to get some hints. And I could edit them for error. To avoid this I usually use my preferred editor functionality to set a buffer as read only, so it’s not possible to write inside it. How?

M-x toggle-read-only

Easy!

Some days ago, I posted about having dynamic URL aliases with cake-php 1.1.18. In that post I used the AppError object trapping the missingAction error.

When I was ready for production environment, during tests I wondered that the AppError is ignored when core debug level is set to 0. While I’m asking about the utility of this behavior, I asked in the list and searched for a solution.

One solution could be to take the __construct method from the ErrorHandler, removing the Configure::read() test and paste it into the AppError::__construct() without calling the parent::__construct(). But in this way if some new feature, fixes, etc. is distributed within that method you’ll probably miss it until you monitor each release.

Finally I opted for useing the routes.php file mapping each action and then mapping the “missing action” to the controller::view() action and the manage the code inside it. Here is a PDF with an extract of the code.

Finally even me landed on the AjaxHelper for give a bit of coolnes (;)) to an application of mine. I’m still using 1.1.18 version of CakePHP.

The problem finally was that when I did an ajax request call the session was restored. Asking in the Mailing List the problems seems to be that when an ajax call has been made the browser doesn’t send a correct User-Agent.

Starting from the hint gave me in the answer to my post, I found the solution that was setting the CAKE_SECURITY in app core.php to a level of medium or lower.

The task was to have “aliases” for url. For example let’s think about a ProjectsController; each project is characterized by a unique id, a unique name and some other attributes. With the cake way you can refer to the projects with /projects/add, /projects/edit/$id, /projects/delete/$id and /projects/view/$id.

I would like to have an alias for the view: call each project even with a url like /projects/$name (friendlier url).

I achieved the task extending the ErrorHandler::missingAction(). Here is the code I used (pdf).

I don’t know if this is the proper way to do this but it’s working.

Again a simple tip. CakePHP by default, in order to optimize performance, has a query caching system. This is a very cool feature but sometimes it may be self-defeating. For example when you do queries for Unit Testing.

In order to disable query caching, it’s enough to set the model cacheQueries variable to false. Setting it to true will re-enable queries caching.

You can disable it for the whole model “life-time” setting it during “design time”

<?php
class Project extends AppModel {
var $name = "Project";
var $customValidate = array("name");
var $cacheQueries = false;
...
?>

or you can temporarily disable it by calling the $this->Model->cacheQueries=false (use your model instead of “Model” )

Here is some extract of code (pdf).

Finally I entered also the Script-Fu world. For the photography school I’m attempting I had to deliver to my teacher about 350 photos. posting them i JPG full resolution would have been raving. So I though to my self, why don’t learn a bit of script-fu and do a script for Gimp that will convert a directory of JPG into others JPG of smalles size?

I know I could have searched for something already done but I wouldn’t have learned Script-Fu/scheme.

This is my first script. I surely have not followed conventions and surely it could have been done better. Maybe there will be a time when I will improve it. For now it’s it and it’s working for my tasks.

The script will take a single JPG or all JPGs in a Directory, resize it to a custom size (by long image side), default 800px, convert it to 72dpi and save it with a different name. Leave a color version or a quick conversion to grayscale. This last one is useful in order to have a look for an entire set if it looks better in color or B&W.

However here is the source code (pdf) to copy and paste into an scm file.