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Solr

2009-11-10T21:44:00.001-08:00

sudo rake solr:install

1./ apt-get install tomcat5.5 libtomcat5.5-java tomcat5.5-admin tomcat5.5-webapps
2./apt-get install solr-common solr-tomcat5.5 libxpp3-java
3./ etc/init.d/tomcat5.5 restart

java -jar start.jar

Uninstall solr: sudo apt-get remove solr-tomcat5.5

jar xvf filename to extract .war file

WIX Free Flash template design

2009-10-18T21:01:00.000-07:00

I have seen many free template websites but those are only for the normal webpage generated as HTML. This morning I've played around with WIX which allows me to create my flash website with many pretty templates. It's easy to customize and change everything.

You can do it by yourself with www.wix.com

Here is mine: www.wix.com/samneang/samneang

flash fly characters should be checked for it's flash animation.

Testing ActiveResource

2009-10-08T19:09:00.000-07:00

I was suffered at the begining of this testing but later I've found some sample ways to solve it.

 //Testing with mocking object's method
  //Sample structure of HttpMock: mock.http_method(path, request_headers = {}, body = nil, status = 200, response_headers = {})

    def setup
    @matz  = { :id => 1, :name => "Matz" }.to_xml(:root => "person")
    ActiveResource::HttpMock.respond_to do |mock|
      mock.post   "/people.xml",   {}, @matz, 201, "Location" => "/people/1.xml"
      mock.get    "/people/1.xml", {}, @matz
      mock.put    "/people/1.xml", {}, nil, 204
      mock.delete "/people/1.xml", {}, nil, 200
    end
  end

  def test_get_matz
    person = Person.find(1)
    assert_equal "Matz", person.name
  end
------------------------------------

  def setup
    @matz  = { :id => 1, :name => "Matz" }.to_xml(:root => "person")
    ActiveResource::HttpMock.respond_to do |mock|
      mock.get "/people/1.xml", {}, @matz
    end
  end

  def test_should_request_remote_service
    person = Person.find(1)  # Call the remote service

    # This request object has the same HTTP method and path as declared by the mock
    expected_request = ActiveResource::Request.new(:get, "/people/1.xml")

    # Assert that the mock received, and responded to, the expected request from the model
    assert ActiveResource::HttpMock.requests.include?(expected_request)
  end
------------------------------------

      def test_delete
        assert Person.delete(1)
        ActiveResource::HttpMock.respond_to do |mock|
          mock.get "/people/1.xml", {}, nil, 404
        end
        assert_raises(ActiveResource::ResourceNotFound) { Person.find(1) }
      end
------------------------------------

  @matz  = { :id => 1, :name => 'Matz' }.to_xml(:root => 'person')
  ActiveResource::HttpMock.respond_to do |mock|
    mock.get "/people/1.xml", {}, @matz
  end

 //Testing by deleting the record and return RecordNotFound(404)
   def test_delete
     assert Person.delete(1)
     ActiveResource::HttpMock.respond_to do |mock|
       mock.get "/people/1.xml", {}, nil, 404
     end
     assert_raises(ActiveResource::ResourceNotFound) { Person.find(1) }
   end

HTTParty, Awesome_nested_set, rdoc option(s)

2009-10-07T00:37:00.000-07:00

For those who wanna use HTTParty well with RoR, you can follow this link: HTTParty.

Talking about listing data as Tree and easy to search, I would like to present you about awesome_nested_set which is cool.

It was not bad that some guys don't know how to generate their Rdoc as the whole structure after they generate it first time because they don't delete the doc folder when they wanna generate it as the whole again.
To generate your RDoc without some specific folders or files you need to type as bellow:

rdoc --exclude folder1 --exclude folder2 --exclude folder3

RESTful Pagination with Ruby on Rails

2009-10-05T21:49:00.000-07:00

Currently I'm working on RoR project and I've seen one plug-in call Will-paginate but it works well with ActiveRecord. There's one blog posts that it also work with ActiveResource but I'm not quiet clear about it. here is the link: Will-paginate

But I've seen another web in stackoverflow which also talk about the way to do pagination with REST. I think, I'll try with Stackoverflow first and combine with will-paginate by using ActiveRecord, otherwise I will use Will-paginate with both ActiveRecord and ActiveResource.

ActiveResource Error response

2009-09-28T19:51:00.000-07:00

    * 200..399 - Valid response, no exception (other than 301, 302)
    * 301, 302 - ActiveResource::Redirection
    * 400 - ActiveResource::BadRequest
    * 401 - ActiveResource::UnauthorizedAccess
    * 403 - ActiveResource::ForbiddenAccess
    * 404 - ActiveResource::ResourceNotFound
    * 405 - ActiveResource::MethodNotAllowed
    * 409 - ActiveResource::ResourceConflict
    * 422 - ActiveResource::ResourceInvalid (rescued by save as validation errors)
    * 401..499 - ActiveResource::ClientError
    * 500..599 - ActiveResource::ServerError
    * Other - ActiveResource::ConnectionError

My first time with Rails

2009-08-20T00:29:00.001-07:00


---------RSpec red/green/refactor
module AccountExampleHelperMethods
  def helper_method
    …
  end
end

shared_examples_for "all editions" do
  it "should behave like all editions" do
  end
end
describe "SmallEdition" do
  include AccountExampleHelperMethods

  helper_method
  it_should_behave_like "all editions"
  it "should also behave like a small edition" do
  end
end
---------
rake db:create                 ..create database
rake db:drop                   ..drop database
rake db:sessions:clear         ..empty sessions table
rake db:migrate                ..run db migrations
rake db:migrate VERSION=  ..rollback db
rake rails:update:javascripts  ..update javascript libraries
rake routes  ...list available routes in application

gem server
script/server
script/console
rake db:migrate
rake db:fixtures:load
rake spec:db:fixtures:load


script/generate rspec_model user
 -> create data in spec/fixtures/users.yml
 -> write our test in spec/models/user_spec.rb

script/generate rspec_controller users

Install/uninstall rails with specific version

2009-08-19T18:38:00.000-07:00

sudo gem uninstall rails
sudo gem install -v=2.3.2 rails

sudo aptitude remove rake
sudo aptitude install git-core
sudo gem install rake

Mulitple inheritance in RUBY

2009-08-05T21:50:00.000-07:00

Normally Ruby is a single inheritance language but you can do multiple inheritance by using Mix-ins which is the module that contains many classes inside or I can separate each classes in each modules as bellow then I include them in to wherever I want.
======================================

module ToolBox
  class Ruler
    attr_accessor :length
  end
  def mesure
    @length = 10
  end
  def whatever
    ....
  end
end

module Country
  class Ruler
    attr_accessor :name
  end
  def unit
    @type = 'meter'
  end
  def whatever
    ....
  end
end

Sample of Ruby basic

2009-08-05T00:40:00.001-07:00

stop_words = %w{the a by on for of are with just but and to the my I has some in}
lines = File.readlines("text.txt")
line_count = lines.size
text = lines.join

# Count the characters
character_count = text.length
character_count_nospaces = text.gsub(/\s+/, '').length

# Count the words, sentences, and paragraphs
word_count = text.split.length
sentence_count = text.split(/\.|\?|!/).length
paragraph_count = text.split(/\n\n/).length

# Make a list of words in the text that aren't stop words,
# count them, and work out the percentage of non-stop words
# against all words
all_words = text.scan(/\w+/)
good_words = all_words.select{ |word| !stop_words.include?(word) }
good_percentage = ((good_words.length.to_f / all_words.length.to_f) * 100).to_i

# Summarize the text by cherry picking some choice sentences
sentences = text.gsub(/\s+/, ' ').strip.split(/\.|\?|\!/)
sentences_sorted = sentences.sort_by { |sentence| sentence.length }
one_third = sentences_sorted.length / 3
ideal_sentences = sentences_sorted.slice(one_third, one_third + 1)
ideal_sentences = ideal_sentences.select { |sentence| sentence =~ /is|are/ }

# Give the analysis back to the user
puts "#{line_count} lines"
puts "#{character_count} characters"
puts "#{character_count_nospaces} characters (excluding spaces)"
puts "#{word_count} words"
puts "#{sentence_count} sentences"
puts "#{paragraph_count} paragraphs"
puts "#{sentence_count / paragraph_count} sentences per paragraph (average)"
puts "#{word_count / sentence_count} words per sentence (average)"
puts "#{good_percentage}% of words are non-fluff words"
puts "Summary:\n\n" + ideal_sentences.join(". ")
puts "-- End of analysis"
------------------RESULT
121 lines
6165 characters
5055 characters (excluding spaces)
1093 words
18 paragraphs
45 sentences
2 sentences per paragraph (average)
24 words per sentence (average)
76% of words are non-fluff words
Summary:
' The surgeon leaned over the body, and raised the left hand. Think what it is
to be a mother, there's a dear young lamb do. 'The old story,' he said, shaking
his head: 'no wedding-ring, I see. What an excellent example of the power of
dress, young Oliver Twist was. ' Apparently this consolatory perspective of a
mother's prospects failed in producing its due effect. ' The surgeon had been
sitting with his face turned towards the fire: giving the palms of his hands a
warm and a rub alternately. ' 'You needn't mind sending up to me, if the child
cries, nurse,' said the surgeon, putting on his gloves with great deliberation.
She had walked some distance, for her shoes were worn to pieces; but where
she came from, or where she was going to, nobody knows. ' He put on his hat,
and, pausing by the bed-side on his way to the door, added, 'She was a
good-looking girl, too; where did she come from
-- End of analysis

Sample of Ruby basic

2009-08-05T00:40:00.000-07:00

stop_words = %w{the a by on for of are with just but and to the my I has some in}
lines = File.readlines("text.txt")
line_count = lines.size
text = lines.join

# Count the characters
character_count = text.length
character_count_nospaces = text.gsub(/\s+/, '').length

# Count the words, sentences, and paragraphs
word_count = text.split.length
sentence_count = text.split(/\.|\?|!/).length
paragraph_count = text.split(/\n\n/).length

# Make a list of words in the text that aren't stop words,
# count them, and work out the percentage of non-stop words
# against all words
all_words = text.scan(/\w+/)
good_words = all_words.select{ |word| !stop_words.include?(word) }
good_percentage = ((good_words.length.to_f / all_words.length.to_f) * 100).to_i

# Summarize the text by cherry picking some choice sentences
sentences = text.gsub(/\s+/, ' ').strip.split(/\.|\?|\!/)
sentences_sorted = sentences.sort_by { |sentence| sentence.length }
one_third = sentences_sorted.length / 3
ideal_sentences = sentences_sorted.slice(one_third, one_third + 1)
ideal_sentences = ideal_sentences.select { |sentence| sentence =~ /is|are/ }

# Give the analysis back to the user
puts "#{line_count} lines"
puts "#{character_count} characters"
puts "#{character_count_nospaces} characters (excluding spaces)"
puts "#{word_count} words"
puts "#{sentence_count} sentences"
puts "#{paragraph_count} paragraphs"
puts "#{sentence_count / paragraph_count} sentences per paragraph (average)"
puts "#{word_count / sentence_count} words per sentence (average)"
puts "#{good_percentage}% of words are non-fluff words"
puts "Summary:\n\n" + ideal_sentences.join(". ")
puts "-- End of analysis"
------------------RESULT
121 lines
6165 characters
5055 characters (excluding spaces)
1093 words
18 paragraphs
45 sentences
2 sentences per paragraph (average)
24 words per sentence (average)
76% of words are non-fluff words
Summary:
' The surgeon leaned over the body, and raised the left hand. Think what it is
to be a mother, there's a dear young lamb do. 'The old story,' he said, shaking
his head: 'no wedding-ring, I see. What an excellent example of the power of
dress, young Oliver Twist was. ' Apparently this consolatory perspective of a
mother's prospects failed in producing its due effect. ' The surgeon had been
sitting with his face turned towards the fire: giving the palms of his hands a
warm and a rub alternately. ' 'You needn't mind sending up to me, if the child
cries, nurse,' said the surgeon, putting on his gloves with great deliberation.
She had walked some distance, for her shoes were worn to pieces; but where
she came from, or where she was going to, nobody knows. ' He put on his hat,
and, pausing by the bed-side on his way to the door, added, 'She was a
good-looking girl, too; where did she come from
-- End of analysis

Ruby scan only useful/key words

2009-08-04T21:52:00.000-07:00

It maybe useful for me later to develop English testing system.
======================================

 text = %q{Los Angeles has some of the nicest weather in the country.}
 stop_words = %w{the a by on for of are with just but and to the my I has some}
 words = text.scan(/\w+/)
 key_words = words.select { |word| !stop_words.include?(word) }
 puts key_words.join(' ')

Hashes in Ruby

2009-08-04T19:33:00.000-07:00

It is just only one part of Ruby which I interested in and It is similar to JSON Object in JavaScript.
======================================

people = {
  'fred' => {
     'name' => 'Fred Elliott',
     'age' => 63,
     'gender' => 'male',
     'favorite painters' => ['Monet', 'Constable', 'Da Vinci']
  },
  'janet' => {
     'name' => 'Janet S Porter',
     'age' => 55,
     'gender' => 'female'
  }
}
puts people['fred']['age']
puts people['janet']['gender']
puts people['janet'].inspect
puts people['fred']['favorite painters'].length
puts people['fred']['favorite painters'].join(", ")

-----------------Result
63
female
{"name"=>"Janet S Porter", "gender"=>"female", "age"=>55}
3
Monet, Constable, Da Vinci
-----------------

Update Ruby to version 1.8.7 in Ubuntu

2009-08-03T19:39:00.000-07:00

$ sudo apt-get install build-essential libssl-dev libreadline5-dev zlib1g-dev
$ wget ftp://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.7-p22.tar.gz
$ tar zxvf ruby-1.8.7-p22.tar.gz
$ cd ruby-1.8.7-p22
$ ./configure --prefix=/usr/local --with-openssl-dir=/usr --with-readline-dir=/usr --with-zlib-dir=/usr
$ make
$ sudo make install

$ which ruby
/usr/local/bin/ruby
$ ruby --version
ruby 1.8.7 (2008-06-20 patchlevel 22) [i686-linux]
$ ruby -ropenssl -rzlib -rreadline -e "puts :success"
success

JavaScript Custom Event

2009-07-30T20:47:00.000-07:00

var CustomEvent = function(){
 //name of the event
 this.eventName = arguments[0];
 var mEventName = this.eventName;

 //function to call on event fire
 var eventAction = null;

 //subscribe a function to the event
 this.subscribe = function(fn){
  eventAction = fn;
 };

 //fire the event
 this.fire = function(sender, eventArgs){
  this.eventName = eventName2;
  if(eventAction != null){
   eventAction(sender, eventArgs);
  }
  else {
   alert('There was no function subscribed to the ' + mEventName + ' event!');
  }
 };
};
========= example
var myEvent = new CustomEvent("my event");
myEvent.subscribe(function(sender, eventArgs){
 alert(eventArgs.message);
});
========= Fire the event
myEvent.fire(null, {
 message: 'you just witnessed the firing of a custom event called ' + this.eventName + '!'
});

Reference

Function as Data in Javascript

2009-07-19T19:45:00.000-07:00

function multiplyByTwo(a, b, c, callback){
    var i, ar = [];
    for(i = 0; i < 3; i++){
        ar[i] = callback(arguments[i] * 2);
    }
    return ar;
}

function addOne(value){
    return value + 1;
}

multiplyByTwo(2,4,6, addOne);

CSS float for firefox and IE

2009-07-06T01:39:00.000-07:00

Dom.styleFloat // for IE
Dom.cssFloat // for firefox

Set class path for java:

2009-06-24T00:19:00.000-07:00

I almost forget how to run Java command outside Java's root folder, bin. Here are the steps to set class path for java.
======================================

1./ Go into Advanced system settings in Control Panel/System
2./ Click on Environment Variables
3./ Click on New... to create "JAVA_HOME" with value "C:\Program Files (x86)\Java\jdk1.6.0_02"
4./ Edit "Path" with value "%JAVA_HOME%\BIN"
5./ Open your new CMD.

Note: Each value in "Path" is seperated by ";"

TileCache with Geoserver

2009-06-21T18:44:00.000-07:00

When we use many layers in one map, we should better use Tilecache which stores all of those images in temporary in local computer, hence our map will load much faster than normal. Here are some ways to configure Tilecache.
======================================

1./ you need to have Apache server installed and make sure your Geoserver is available.

2./ Define your temp folder to store those temporary images and your layers which is already generated from Geoserver in "tilecache.cfg"
//temp folder
[cache]
type=Disk
base= C:/temp/tilecache
// layer from Geoserver
[cambodia]
type=WMS
url=http://127.0.0.1:8080/geoserver/wms?transparent=true
extension=png
layers= mango:cam_DistrictCenter
srs= EPSG:41001
#metatile= yes
metaBuffer=10
metaSize=20,20

3./ Define tilecache folder in "httpd.conf"
<Directory C:\wamp\www\tilecache>
     AddHandler cgi-script .cgi
     Options +ExecCGI
</Directory>

Reference: Tilecache's docs

Artisteer

2009-06-05T23:20:00.000-07:00

It is a cool program which helps you to design any website in a few minutes by some easy steps. I can only use Artisteer v2.1.0 since I haven't found the cracked for other versions yet. Artisteer supports either many technologies such as CodeCharge Studio4, WordPress(2.5-2.7), Joomla 1.5 and Drupal(5.x, 6.x) or Browsers like IE 6+, Firefox 2+, Opera 9+, Safari 1+ and Chrome 1+. You should watch it's demo then you will know how cool it is.

Here are some steps to use Artisteer v2.1.0 without trial version:
======================================
1./ You must download Artisteer v2.1.0 by this url:
Artisteer v2.1.0 and install it.

2./ Download this video which tells you how to remove trial:
Untrial artisteer video

3./ Bat file is the key file to remove it's trial.

4./ Artisteer's doc

Note You may not be able to view Artisteer's doc directly on the internet but you can download and view it in your own PC.

Remote Desktop in Ubuntu

2009-05-27T03:18:00.000-07:00

You will be able to remote other ubuntu desktop by this following command:

vinagre 192.168.0.174

Javascript Unique Item in Array

2009-05-18T02:00:00.000-07:00

After we follow this code bellow, we'll get tempArr[] which store unique items.
Example: array[1,10,2,2,5,4,5,6,6,8,10,8] => array[1,2,4,5,6,10,8]
======================================


function contains(a, e) {
 for(j=0;j<a.length;j++)if(a[j]==e)return true;
 return false;
}

if(!contains(tempArr, urlObj[i].group)){
  tempArr.length +=1;
  tempArr[tempArr.length-1] = urlObj[i].group;
}

Selenium

2009-05-09T21:11:00.000-07:00

Selenium is a test tool that allows you to write automated web application UI tests in any programming language against any HTTP website using any mainstream JavaScript-enabled browser.
======================================

1./ You need to have Ruby in your pc then install selenium by a command below.

sudo gem install Selenium

2./ cd to our JSSpec's path then run command below in order to access HTTP Server from that directory by default it's "http://localhost:8000"

python -m SimpleHTTPServer

3./ run you JSSpec file by putting it's name after the http's path above

Reference:
ChrisinCambo - jsspec_ci

GeoServer in Ubuntu

2009-04-27T21:02:00.000-07:00

It's not difficult to setup Geoserver on your local Ubuntu by following these steps bellow:
======================================


1./ install java
2./ download binary Geoserver then unzip it in usr/local

3./ edit file startup.sh:
 #PATH=/usr/sbin:/usr/bin:/sbin:/bin;
 #DESC="Description of the service";
 #NAME="geoserver";
 #SCRIPTNAME=/etc/init.d/$NAME;

 JAVA_HOME="/usr/lib/jvm/java-6-sun";
 #GEOSERVER_USER="geoserver";
 #GEOSERVER_DATA_DIR="/usr/local/geoserver/data_dir";
 GEOSERVER_HOME="/usr/local/geoserver";

4./ to change default port 8080 to other by :
 edit file jetty.xml

Mercurial

2009-04-21T18:37:00.000-07:00

It's the way to access mercurial by hg command.
======================================

Clone from webserver to local-1
Clone from local-1 to local-2
After modifying local-2 then 
 "hg add filename/foldername"
 "hg commit and write file"
Go back to local-1 then
 "hg pull ../local-2"
 "hg update"