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Jun10th11
Grails, spring-ws, SOAP & HTTP request’s content type

If you ever have to use Grails to process a fucked up SOAP request with a content type of application/x-www-form-urlencoded then this post is for you.

p.s. eventually we will stop processing that kind of requests but for now we need it to work so client has time to fix their shit up

Problem with application/x-www-form-urlencoded requests & spring-ws’ message factory is that it does not like requests with that content type. Rightly so!

The message factory content type issue is obvious since the exception that it throws at you is pretty self-explanatory. The work-around is pretty easy, define your own messageFactory spring bean that is more lenient on the content type.

But after the content type is sorted you would face the second problem “Premature end of file”. It took me a while to figure out what is happening. In retrospect it is actually quite logical. The end of file is referring to the request’s input stream which has been consumed by Grails filters before it gets to the message factory. The following filters are responsible for parsing the request and routing, luckily they are also subclasses of OncePerRequestFilter which means you can easily bypass them to avoid input stream been consumed.

  1. grailsWebRequest
  2. urlMapping
  3. hiddenHttpMethod

1:39 pm, by shenie, ∞




Jun10th11
How to use Groovy categories in gsp’s

You use Groovy categories in a canonical way in gsp’s. i.e. by surrounding all your gsp code inside a call to

<% use(YourCategoryClass) { %>

<% } %>

But it gets troublesome quite soon, especially if the main gsp renders other partial templates.

Luckily there is a way to hook into the view rendering workflow. The trick is to provide your own implementation of View that invoke the call to use categories around the view.render method. To do that you also need to override the default jspViewResolver spring bean with your own implementation of ViewResolver which uses your own implementation of View. Lastly if you need dynamically decide what categories classes to use then you can pass it in the model attribute inside your controller.

The result will look something like this.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 
class MyGrailsViewResolver extends GrailsViewResolver {

    @Override
    protected View loadView(String viewName, Locale locale) {
        new MyView(super.loadView(viewName, locale))
    }

    static class MyView implements View {
        def View view

        MyView(View view) {
            this.view = view
        }

        String getContentType() {
            view.getContentType()
        }

        void render(Map<String, ?> model, HttpServletRequest request, HttpServletResponse response) {
            if (model.categories) {
                use(model.remove(’categories’)) {
                    view.render model, request, response
                }
            } else {
                view.render model, request, response
            }
        }
    }
}

   		 

				

			

	
	
	



	

	

	

	

	

	
9:58 am, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Nov26th10

				

		

	
	
	
	 
	 
	
	
	
		
				
Convert GPathResult to String without tag0

		
			

				

				

				

				

				

				
In Groovy, you can use groovy.xml.XmlUtil.serialize(GPathResult node) 
to convert node to XML String.  But sometimes the XML you end up with contains tag0 namespace all over 
the elements. It happens because the doc contains default namespace 
with empty prefix, so groovy uses a default prefix which is “tag0”. 
The XML is still correct but it would be nice to not have to see that 
crap. To do so you need to create a new closure with the node and 
explicitly declare an empty string namespace. Then use 
StreamingMarkupBuilder to convert the newly created closure to String. 
The following code is how you would implement that logic. 
  


				

			

	
	
	



	

	

	

	

	

	
4:27 pm, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Jul08th10

				

		

	
	
	
	 
	 
	
	
	
		
				
Overwrite Inploy app servers’ restart command

		
			

				

				

				

				

				

				
Inploy (http://github.com/dcrec1/inploy) is a rails deployment 
solution. It comes with integration to restart 4 app servers: 
* mongrel 
* passenger 
* thin 
* unicorn  I needed a way to change how Inploy restarts passenger since our 
passenger’s restart file is at a different location. 
 I could’ve changed the command inside Inploy’s passenger.rb but I 
wanted to avoid that as there’s good chance that someone in the future 
won’t know to re-apply the change when they upgrade Inploy.  So I needed a way to monkey patch Inploy’s passenger module. My first 
attempt was to create my version of the Passenger module and require 
the file in rails’ environment.rb. That was no good because Inploy’s 
update command does not seem to bootstrap the whole rails environment 
so my override simply wasn’t getting loaded. 
 I had to find another way in to load my module for the deployment 
process. It turns out the solution I was looking for is in rake. Since 
Inploy’s update is just a rake task, I could create a passenger.rake 
in Rails.root/lib/tasks and define my restart_server override inside 
my custom passenger.rake.  Please let me know if there is a better / proper way to achieve what I 
needed. Otherwise hope this helps someone else.

				

			

	
	
	



	

	

	

	

	

	
7:57 pm, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Dec10th09

				

		

	
	
	
	 
	 
	
	
	
		
				
My shortcut to open any gem in TextMate with 1 command

		
			

				

				

				

				

				

				
Using the implementation from @peepcode’s blog on shell method missing as a base.
I’ve added another action (code snippet below) to open a gem library in TextMate by typing in the name of the gem followed by “.mate”.
when /^[A-Za-z0-9_-\/]+.mate$/
  # Open the gem in textmate
  # @example
  #   haml.mate
  gem_to_open = command.first.gsub(/.mate$/, ”)
  run “gem which #{gem_to_open} | tail -1 | xargs dirname | sed -e’s/$/\/../’ | xargs mate”

				

			

	
	
	



	

	

	

	

	

	
12:42 pm, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Nov26th09

				

		

	
	
	
	 
	 
	
	
	
		
				
Download sources jar from maven

		
			

				

				

				

				

				

				
We use Maven, when Maven downloads dependencies it doesn’t download sources, which I rely on when learn and debug programs…. 
I was expecting, for what seem a simple thing to me, a flag that I can add in maven’s settings files or an option to pass to mvn command…. but I couldn’t find the solution (or anything close to it). Don’t get me wrong, there are solutions out there, but I just feel it is too much hassle for the task.  So I wrote a little script that go thru my repo and downloads any jar that doesn’t have its respective sources :p 

				

			

	
	
	



	

	

	

	

	

	
5:05 pm, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Nov24th09

				

		

	
	
	
	 
	 
	
	
	
		
				
ImageMagick and JPEG on OSX

		
			

				

				

				

				

				

				
I am not a fan of port or fink so I always install ImageMagick from source.



Recently I came across a problem where ImageMagick fails to identify JPEG’s.



The error looks something like this



identify: no decode delegate for this image format





After some digging around it appears I need to install libjpeg and reinstall ImageMagick for JPEG support.



So I downloaded jpegsrc.v7.tar.gz and just run thru the standard configure, make & make install then reinstalled ImageMagick.



After the installation you should be able to see JPEG as one of the supported format via the command ”identify -list format”.



It should contain something like this.



     JPEG* JPEG      rw-   Joint Photographic Experts Group JFIF format (70)

				

			

	
	
	



	

	

	

	

	

	
11:52 am, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Oct04th08

				

		

	
	
	
	 
	 
	
	
	
		
				
Script Editor

		
			

				

				

				

				

				

				
This is a reminder for myself more than anything.



To learn what you can do with an application using osascript, you can run Script Editor and click “Open the Application’s Dictionary” to see properties &/methods that are available.

				

			

	
	
	 
	

		

		

		

		

		

		
tagged: apple,osascript,scripting,

		

	

	



	

	

	

	

	

	
2:58 pm, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Oct02nd08

				

		

	
	
	
	 
	 
	
	
			
Apple did the right thing

		 
			

				

				

				

				

				

				
NDA dropped for released software

				

			

		
	
	
	
	



	

	

	

	

	

	
8:08 am, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Sep28th08

				

		

	
	
	
	 
	 
	
	
			
iPhone NDA

		 
			

				

				

				

				

				

				
Wonder when is Android powered phones will come to OZ. It’d be fun to write app to run on my own phone :)

				

			

		
	
	
	
	



	

	

	

	

	

	
7:01 am, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Sep10th08

				

		

	
	
	
	 
	 
	
	
			
Fun with proc

		 
			

				

				

				

				

				

				
Curry is going to be a double edged sword.

				

			

		
	
	
	
	 
	

		

		

		

		

		

		
tagged: ruby,

		

	

	



	

	

	

	

	

	
11:29 am, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Sep02nd08

				

		

	
	
	
	 
	 
	
	
	
		
				
git survey

		
			

				

				

				

				

				

				
Some of the commands in the survey looks interesting, must find time to learn them.



git add -i / -p
git add -u / -A
git am
git am -i
git apply
git apply --whitespace=fix
git archive
git bisect
git bisect run 
git annotate
git gui blame
git blame
git blame -L , etc.
git bundle
git cherry
git cherry-pick
git cherry-pick -n
git citool
git clean
git add + git commit
git commit -a
git commit ...
git commit -i ...
git commit --amend
git cvsexportcommit
git cvsserver
git daemon
git daemon (pushing enabled)
git ... --dirstat
git fetch []
git filter-branch
git format-patch
git grep
git imap-send
git instaweb
git log --grep/--author/...
git log -S (pickaxe search)
git log --graph
git merge
git merge with strategy
git merge --squash
git mergetool
git pull (no remote)
git pull --rebase []
git pull 
git pull 
git push
git relink
git rebase
git rebase -i
git remote
git remote update
git request-pull
git revert
git send-email
git show-branch
git shortlog
git shortlog -s
git stash
git stash --keep-index
git submodule
git svn
git whatchanged
git gui
gitk


				

			

	
	
	 
	

		

		

		

		

		

		
tagged: git,scm,

		

	

	



	

	

	

	

	

	
12:48 am, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Jul05th08

				

		

	
	
	
	 
	 
	
	
	
		
				
Jar decompiler

		
			

				

				

				

				

				

				
A while ago I posted some shell scripts to decompile java classes.



I decided to re-implement it in ruby so I can use it between my work (Windows) and home (OS X) machines.



This version does not require you to extract the class files first. You simply pass the jar file to the script and it’ll decompress and decompile it into a directory with the same name as the jar file without .jar.

				

			

	
	
	 
	

		

		

		

		

		

		
tagged: jar,jad,class,decompile,ruby,github,

		

	

	



	

	

	

	

	

	
4:11 pm, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Jul02nd08

				

		

	
	
	
	 
	 
	
	
			
Twitter's auto follow script in ruby

		 
			

				

				

				

				

				

				
As requested by Josh

				

			

		
	
	
	
	



	

	

	

	

	

	
9:28 pm, by shenie, ∞

	














 
	

	
		

			

			

			

			

			

				

				Jun30th08

				

		

	
	
	
	 
	 
	
	
	
		
				
How to map a network drive

		
			

				

				

				

				

				

				
net use x: \\{server}\d$  /USER:{server}\{username} {password}




Basically says you want to map d: drive on {server} to your x: drive as the {username}, which is a login locally on {server}

				

			

	
	
	 
	

		

		

		

		

		

		
tagged: windows,net,network,

		

	

	



	

	

	

	

	

	
9:37 pm, by shenie, ∞

	














 
	

	 
	  
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