Configuring QuickProxy FireFox plugin

16 Jul 2008 19:10 - comments turned off

While trying out Ratproxy I needed to use QuickProxy.
I couldn't find any configuration description, so here is what I did.
Go to: Preferences > Advanced > Network, and set HTTP Proxy to localhost and Port to 8080 for the default Ratproxy settings.
To turn QuickProxy on/off click the 'P' icon in the status bar.

Seam, a second look at JSF

10 Jul 2008 22:04 - (0) comments

I decided to have another look at JSF by reading the Tutorial. The last time I used JSF was 2 years ago (I thought it sucked then). Maybe it has improved with Seam.

Besides almost falling asleep from all the xml I did notice Seam supports Ruby style templating Strings(example 1.2), which is sort of nice.
I'm not sure if you can use simple java oneliners though.

A couple of things that suck:

- Validation of required fields in views (Example 1.7)


  Username: <h:inputText value="#{user.username}" required="true"/>

- Session beans require an interface. Let's define everything twice!

- Displaying a simple date requires 120 chars (Example 1.12)


  <h:outputText value="#{msg.datetime}"><f:convertDateTime type="both" dateStyle="medium" timeStyle="short"/></h:outputText>

- Configuration in the views and confusing prefixes.


  <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

  <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

- Removing duplication from views sucks because you can't extract methods.

I actually forgot how much JSF sucked (I remember it was hard to test).
The biggest problem is that it's been developed by someone who doesn't use it to write real applications.
It's full of crappy implementations of concepts that seem like a good idea from an ivory tower.

Here is a script that generates the same application in Rails(2.1), it's just a bit longer than just the web.xml from the seam example:


puts `rails seam`

Dir.chdir "seam"

open('config/database.yml', 'w') do |f|

f << %{development:

  adapter: mysql

  socket: /opt/local/var/run/mysql5/mysqld.sock

  database: seam

  username: dev

  password: dev}

end

puts `rake db:create`

	
puts `script/generate model user username:string password:string name:string`

open('app/models/user.rb', 'w') do |f|

f << %{class User < ActiveRecord::Base

  validates_length_of :password, :in => 5..15

  validates_presence_of :name

  validates_length_of :username, :in => 5..15

  validates_uniqueness_of :username

end}

end

	
puts `script/generate controller Register`

open('app/controllers/register_controller.rb', 'w') do |f|

f << %{class RegisterController < ApplicationController

  def index

    @user = User.new(params[:user])

    render :action => :registered if params[:user] && @user.save

  end

end}

end

	
open('app/views/register/index.html.erb', 'w') do |f|

f << %{<html>

<head><title>Register New User</title></head>

<body>

<%= error_messages_for 'user' %>

<% form_for @user, :url => {:action => :index} do |f| %>

   Username: <%= f.text_field :username %><br />

   Real Name: <%= f.text_field :name %><br />

   Password: <%= f.text_field :password %><br />

   <%= submit_tag "Register" %>

<% end %>

</body></html>}

end

	
open('app/views/register/registered.html.erb', 'w') do |f|

f << %{<html>

   <head><title>Successfully Registered New User</title></head>

   <body>Welcome,  <%= @user.name %>, you are successfully registered as <%= @user.username %>.</body>

</html>}

end

	
puts `rake db:migrate`

Cartoons van journalist verboden, Volkskrant zwijgt

22 Mar 2008 8:09 - (0) comments

http://www.volkskrantblog.nl/bericht/191036

Ordina puzzle in Ruby

08 Dec 2007 19:14 - (0) comments

Ordina is running a campaign to attract Java developers.

Here is my version of the puzzle in Ruby. For a better comparison I've kept some of the Java style code and refrained from some one liners. Still, it's about half as long as the Java version.
My solution to the puzzle uses wikipedia to lookup the acronyms.

ordina.rb


require 'open-uri'

module Nl

  module Ordina

    class JavaSpecialist

	
      def self.main

        js = find_specialist_wanna_be

        if js

          js.start

        else

          puts "Geen JavaSpecialist implementatie gevonden"

        end

      end

	
      def start

        report = "Volgens de specialist #{name}\x5c\x6eHebben de volgende termen de betekenis" +

                  "\x5c\x6e\x55\x4d\x4c #{eval "waarStaat\x55\x4d\x4cVoor" } \x5c\x6e\x52\x55\x50 " +

                  "#{eval "waarStaat\x52\x55\x50Voor" } \x5c\x6e\x58\x4d\x4c #{eval "waarStaat\x58\x4d\x4cVoor" } " +

                  "\x5c\x6e\x4d\x56\x43 #{eval "waarStaat\x4d\x56\x43Voor" } \x5c\x6e\x45\x4a\x42 " +

                  "#{eval "waarStaat\x45\x4a\x42Voor" }\x5c\x6e\x41\x4f\x50 #{eval "waarStaat\x41\x4f\x50Voor" } " +

                  "\x5c\x6e\x4a\x53\x46 #{eval "waarStaat\x4a\x53\x46Voor" }"

        puts report.gsub!('\n', "\n")

        puts kijk_bij_ordina

      end      

	
      private

	
      def self.find_specialist_wanna_be

        dir = Nl::Ordina.name.gsub('::', '/').downcase

        Dir.new(dir).each{|i| require("#{dir}/#{i}") unless File.directory?("#{dir}/#{i}") }

        Nl::Ordina.constants.each do |i|

          unless i == self.name.split('::').last

            obj = instance_eval(i).new

            return obj if obj.is_a? JavaSpecialist

          end

        end

      end

	
      def kijk_bij_ordina

        open("http://jobportal.ordina.nl/jobportal-front/pages/index.jsf").read

      rescue

        'Kijk op http://jobportal.ordina.nl/'

      end

    end

  end

end

Nl::Ordina::JavaSpecialist.main

nl/ordina/impl.rb


module Nl

  module Ordina

    class JavaSpecialistImpl < JavaSpecialist

      def name

        "p8"

      end

	
      def method_missing(*args)

        afk = args.first.to_s.gsub('waarStaat', '').gsub('Voor', '')

        page = open("http://en.wikipedia.org/wiki/#{afk}").read

        matchdata = /<title>([^>]*)(<\/title>)/.match(page)

        matchdata ? matchdata[1].gsub('- Wikipedia, the free encyclopedia', '') : 'Onbekend'

      end

    end

  end

end

Can't connect to local MySQL server through socket '/var/mysql/mysql.sock'

21 Jul 2007 10:20 - (0) comments

OSX crashed yesterday and after restarting I got the following error in some php apps


Can't connect to local MySQL server through socket '/var/mysql/mysql.sock'.

This happened once before so I'm documenting the proper solution here for possible later use.


sudo /usr/sbin/apachectl stop

apache2ctl start

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