Haroon's Blog

Islamabad Trip

2011-11-13T02:18:00.001-08:00

Isloo-Muree-Thandani-Faisalbad - free slideshow

Isloo-Muree-Thandiani - free slideshow

Islo -Trip - slideshow dvd

Mufti Najeeb Ahmed 'Hazrat Ibrahim Ki Qurbani Aur Hamari Zindagi

2011-11-13T01:45:00.000-08:00

Success breeds Success

2011-08-06T03:12:00.001-07:00

A story taken from the truth mag

How to Create CD to ISO Image File on Linux

2011-03-06T00:00:00.001-08:00

It is so simple .To create iso image file from linux, you don’t need any software. It can be done by only just one command on terminal

cat /dev/scd0 > /home/haroon/ubuntu.iso

Reference

http://www.tech-recipes.com/rx/2769/ubuntu_how_to_create_iso_image_from_cd_dvd/

Labels: ubuntu, open source, iso image

Unforgetable Memories of Hajj 2010

2010-11-29T01:36:00.000-08:00

Wonderfull Qirat by AbdulRahman Al Sudais in Magrib Prayer

Installing Joomla 1.5.20 on Ubuntu 10.04

2010-09-17T03:06:00.000-07:00

Installing Joomla on Ubuntu is not very much tricky but don’t know why It took my too much time and gave error again and again I followed the Ubuntu Official guideline to install Joomla It gave me the following error on my browser

SQL Error Jos_session table doesn’t exist

Then I followed another blog to install Joomla and got successful to install Joomla over my favorite Ubuntu 10.04

The following are steps I follow to install Joomla

1) Pre-requisite LAMP installing

Just type the following command to install LAMP from pre-package software

$tasksel

Just Select LAMP Server and press ok the installing goes on ….

2) Registering your joomla directory on apache Server

Just type the following command

$etc/apache2/sites-available/default etc/apache2/sites-available/joomla

$/etc/apache2/sites-available/a2ensite joomla

3)Reloading Apache Server

$/etc/init.d/apache2 reload

4)Set up MYSQL database for Joomla cms

$mysql -u root -p

Enter password: ****


$mysql> create database joomladb;

$mysql>\q

5)Install Joomla in Ubuntu

$cp -R /home/haroon/Documents/Joomla_1.5.20-Stable-Full_Package/ /var/www/joomla

$chown -R www-data.www-data /var/www/joomla/joomla/

Open you browser and type localhost/joomla

the following page open in your browser and this page itself guide to joomla install till end .

how to create user schema in oracle db

2010-07-25T23:13:00.000-07:00

Connect or login as sysdba account

sqlplus sys/password AS SYSDBA

To create user schema

create user username Identified by password DEFAULT TABLESPACE users TEMPORARY TABLESPACE temp QUOTA UNLIMITED ON users;

You have to give grants to according to your requirement

GRANT CONNECT, CREATE TABLE TO username;

Reference :http://www.oracle-base.com/articles/misc/SchemaOwnersAndApplicationUsers.php

Jamia Tur Rasheed Introduction

2010-07-20T10:41:00.000-07:00

Jamia Tur Rasheed Convocation 2010

2010-07-20T02:32:00.000-07:00

Recently I got chance to attend wonderful and unique convocation of Jamia tur rasheed .Approx 8 thousand guest including few legendaries of Pakistan attended this session.

Jamia tur rasheed is one of distinct institution of Pakistan which is providing comprehensive religious studies and complete academic education under supervision of professionals and experts.A few highlights of current convocations and their degrees below.

(a news courtesy by dailyIslam news paper)

One another exclusive and significant thing of this convocation is that there is list of all VVIP respectable honorable guests which are belonging to different sets of professions and they all are champion and legendaries in their own profession. Few words and highlights from honorable guest about this session and jamia

(a news courtesy by dailyIslam news paper)

My Entry Pass
Jamia tur rasheed Introduction Documentary http://www.haroonidrees.com/2010/07/jamia-tur-rasheed-introduction.html

ScribeFire Independent Desktop Client for Linux

2010-03-05T22:58:00.001-08:00

ScribeFire is firefox extension which runs under firefox browser and use as blogger client. A few of extensions like ScribeFire are part of firefox but they have nothing to do with websites. Browsers are for websites/web applications not for other applications.Most of firefox extensions facilitate websites like firebug very popular extension in developers use for introspecting HTML,Change HTML DOM style sheets in run time etc but extensions like ScribeFire doesn't facilitate websites and can work as independent full fudge application.
      Things come in mind, why I start firefox to run ScribeFire.Can I use ScribeFire as Independent software like bilbo,BlogGTK or Window Live writer and that leads to create its prism (Prism is a simple XULRunner based browser that hosts web applications without the normal web browser user interface). Prism is for web applications only.
I did little workaround to run this ScribeFire.The steps of making ScribeFire as independent application is little tricky.

        1. Download the ScribeFire extension and extract it in folder. you will see files install.rdf and
          chrome.manifest file in extracted folder. Open install.rdf and write the following lines in it and save
          it.

<em:targetapplication>
            <description>
                <em:id>prism@developer.mozilla.org</em:id>
                <em:minversion>0.*</em:minversion>
                <em:maxversion>1.*</em:maxversion>
            </description>
        </em:targetapplication>

2. Open chrome.manifest and replace following line. Firefox use browser.xul to render xul but
prism use webrunner.xul

overlay chrome://browser/content/browser.xul
to
overlay chrome://browser/content/webrunner.xul

       3. Select all files from extracted folder and create compress zip file. Rename the zip file extension to
          xpi

       3. Install prism , open it and write the following line in URL field

chrome://scribefire/content/scribefire.xul

       4. Check show status messages and progress box,check Desktop shortcut and press OK button

   5. In Prism right bottom you will see arrow down icon, click on this icon, select tool and add-ons

   6. Install your created xpi file from open window and restart.

      I upload scribefire plugin xpi build for prism you can download it from here

FireFox Scribe Fire Blogging Client

2010-03-03T23:00:00.001-08:00

I found a complete Blogging Client for Linux under firefox browser

FireFox Scribe Fire Blogging Client

2010-03-03T22:58:00.001-08:00

/**
     * SyntaxHighlighter
     */
    function foo()
    {
        if (counter <= 10)
            return;
        // it works!
    }

Hanging out Go Aish Adventure and Dinner at Salateen

2010-02-04T23:30:00.001-08:00

http://www.goaish.com/

Total modularization using Jigsaw project

2010-01-27T11:18:00.000-08:00

A Java 7 big milestone project Jigsaw jre modularization.
Click here to enlarge

For detail

http://tinyurl.com/y8c6gj3

Maju Tech Con Presentation Replay

2009-12-29T21:26:00.000-08:00

Zia Khan @ MAJUTechCon 2009

Anjum and Haroon @ MAJU Techcon 2009 @ Yahoo! Video

Non Technical Interior Sindh Tour By Technical Guys

2009-12-27T05:41:00.000-08:00

Click here to Enlarge Map

My FaceBook 2009 Few highlights

2009-12-21T21:01:00.000-08:00

Maju Tech Con and my experience

2009-11-30T22:38:00.000-08:00

A few days before I got chance to arrange an event with name of Maju Tech Con(Mohammad Ali Jinnah Technical Conference).Arranging that event was a challenge for me because that was my first event that I had to organized.

The main theme of that event is to guide students for their future and bring the industry and academia closer to each other.
My one teacher Azmat Khan helped me very much to arranging that event by getting permission, making team and guiding me.

Azmat Khan

All team did well job but two team member specially did awesome job.Haris Zubari and Shoaib Jaffery.Haris was totally responsible for creating website (http://majutechcon2009.tk)and recording all event and streamed it over Internet.Shoaib was responsible for creating internal volunteer team for security, parking auditorium ,guest reception and refreshment.

Team

After creating team I had to arrange speaker. I requested to Microsoft Pakistan , Sir Zia (Operation badar) ,OSRC , Soban Khan from Etilize (Pvt) Ltd and Jehan Ara from P@sha for speech in this conference. Fortunately all accepted my request and got ready to join us.

Yasir Mobeen

After speakers arrangement I had to arrange host.I requested to my friend yasir mobeen to host this event.he showed his agreement.

Zia Khan

Our first speaker was sir Zia Khan(My teacher).I requested him to join us and share some stuff about of cloud computing to us,He is currently disparately working on cloud computing and I think he is best person for cloud computing.He shared benefits of upcoming next generation technology and how it can be beneficial specially for Asian firms.

Anjum Kaisar and Haroon Idrees

Jquery selector

2009-11-24T04:03:00.000-08:00

Nice link about jquery selector
http://codylindley.com/jqueryselectors/

DreamSpark (A place for free software for students)

2009-11-01T21:59:00.000-08:00

DreamSpark Portal offer free software for students . The program was originally available for university/college students.
Pakistani students register to dream spark portal through following sites
http://www.rozee.pk/dreamspark/
http://jibranjamshad.tech.officelive.com/DreamSpark.aspx
According to DreamSpark Portal
In order to get this software at no charge, students are asked to establish or verify their student status once every 12 months. This process is built into the DreamSpark site itself. Verification of valid student status will enable students from around the globe to download Microsoft developer and design tools at no charge.

Open Source University Meetup(Osum) and Sun Academic Initiative(SAI)

2009-10-24T10:47:00.000-07:00

Osum and SAI brings special package for students, school/university's staff and teachers for certification,training and learning materials

Introduction to Osum
OSUM Affiliate Group is an OSUM group that can receive support from Sun Microsystems. OSUM Group are the centralize place to join open source lovers and plan activities for Open Source Promotion in your Universities. OSUM often arranges Webinar or Technical Session for Student and also provides lot of other benefits too.

Osum Karachi Group
http://osum.sun.com/group/karachipeople
Osum Ned University Group
http://osum.sun.com/group/ned
Osum Sir Syed University Group
http://osum.sun.com/group/ssuet
Osum Fast Nu Group
http://osum.sun.com/group/fastnuces
Osum Maju University Group
http://osum.sun.com/group/m
If your university is not register with Osum ,Go register your Group.

Introduction to SAI
Through Sun Academic Initiative (SAI),Students are able to get free web-based training on Sun technologies and master the skills to fast-track their career. Leverage Sun's industry leading expertise and latest innovations to expand your knowledge of these leading technologies:

* Java technology
* Solaris OS system administration
* Java Enterprise System infrastructure products
* StarOffice productivity suite

What does SAI offer?
Program Offerings As a Sun Academic Initiative (SAI) Program participant, students, faculty and staff will receive the following:
Free access to an extensive portfolio of Web-based courses through SAI Learning Connection
Free Web-based ePractice Certification Exams
Discount for Certification Exams
Who can use thes benefits

According to SAI
The SAI exam voucher program is open to all students, faculty, and staff of educational institutions. Students who have graduated from an educational institution within the past six months are also eligible. In order to participate in the program, you must register for the Sun Academic Initiative (SAI) program. Your school does not need to be listed as an SAI partner for you to participate.

First You have to request SAI Program Name and Program Id from below link
http://www.sun.com/solutions/landing/industry/education/sai/getstarted.jsp
After getting Program Name and Program Id

Sign Up To SAI
1- Direct your browser to: http://sailearningconnection.skillport.com/
Note: you must enable pop ups in your browser for this application.
2- Click on "Register Complete the Registration form and Create your own
Username and Password"

Discount Vouchers for Student ,staff and Teachers(University Students and Max after Six month of your Graduation) @ $40 only
1- Direct your browser to: http://saic.educationservicesgroup.com/
2- Fill the form fields using your SAI Program Name and SAI Program ID
For Pakistan SAI Pragram name is SAI-Pakistan and SAI-Program ID:"your program Id"
3- Click on ''Submit''
4- Fill in the necessary payment details on Certification Exam Voucher Purchase Site and submit
5- You will receive an email instructions on how you can verify your SAI eligibility
6- Once eligibility is verified, you will receive an email with the exam voucher code - purchased at SAI Price.

Professional certification are available to SAI participants in the these key areas:

* Sun Certified Java Associate (SCJA)
* Sun Certified Java Programmer (SCJP)
* Sun Certified System Administrator (SCSA)
* Sun Certified Network Administrator (SCNA)
* Sun Certified Web Component Developer (SCWCD)
* Sun Certified Solaris Associate (SCSAS)
* Sun Certified MySQL™ 5.0 Database Administrator 1
* Sun Certified MySQL™ 5.0 Database Administrator 2
* Sun Certified MySQL™ 5.0 Developer Part 1
* Sun Certified MySQL™ 5.0 Developer Part 2
* Sun Certified MySQL™ 5.0 Associate

To prepare for the certification exams, students have access to ePractice Certification Exams. These no-cost web based practice exams will acquaint students with the format of the exams and its questions. The practice exams includes sample test questions, the correct answers with explanations, and provides the test taker suggestions for future study.
Don't wait and Join Osum and SAI program to take maximum benefits

Nokia 5800 WLAN static IP Setting

2009-10-18T23:14:00.000-07:00

Follow these instructions to set it up WLAN static IP Setting
Add New Wireless Connection
Press the Menu Button ---> Settings --->Connectivity --->Destinations--> Access point(add new Access Point)-->Automatically check for available access points -->Yes-->Wireless Lan --> Highlight the one to which you want to connect--> Click Select -->Enter WEP value (if any)-->Destination --> Internet -->Click Select .
After follow above WLan connection has been added.

Setting up Static IP
Press the Menu Button--> Settings --->Connectivity ---->Destinations-->Internet ---->Select Wireless Connection-->New Click Options--->Edit-->Highlight the WLAN network Mode Touch it to change it to Ad-hoc, it may be set to Infrastructure -->; Now Click Options -->Advanced Settings -->IPv4 --> Enter IP Address ,Subnet Mask , Default Gateway and DNS servers

P@sha Award09 was a great event

2009-10-14T13:48:00.000-07:00

I went to p@sha Award 2009 yesterday.It was great experience and learning as well.This sort of events are good in many manners.you may up-to date yourself with this type of trends,you can come to know that where is going technical research and you can meet with high level management of technical companies and can do chit chat with them.

The whole efforts of Jehan Ara and it's team was prominent and told us that how much efforts they did to make their presence felt before this materialistic world and how they made progress.

The best software/Idea what I personally like very much what is world’s most sophisticated 3D Cricket game (PC) presented by Lahore Base Company Mindstorm Studios.It goes without saying that this is the world class game and can compare any current 3D high graphics game.The CEO of this company Baber ahmed presented demo of this game it was really out standing the game industry is world's top industry and have many potential acts to grow.

Demo which was presented by Babar Ahmed

I met to Badar kushnood (Google consultant in Pakistan) and got some moments to chit chat with him,He is a very friendly chap and prince charming and i sprung my time with him it was really fine did discussion.

more over it was good experience ,just wish to spend my time for This type of encourage peoples and want such information about technology and em really giving you advice that make our life better with technology.

Google Apps

2009-10-12T04:56:00.000-07:00

Introduction Google Apps

Google Apps is a cloud base group ware products that run in a web browser(concept of SAS) ,This includes communication tools

Mail Solution with less spam and mobile access
Office productivity tools (Google Docs: text files, spreadsheets and presentations).
Google Calendar and IM with mobile access
Google Sites (to develop web pages)

To take a tour of google apps
http://apps.gepportal.com/google-apps-basics

The tools are free, or users can pay for a Premium Edition that adds more storage space and other features.It’s easy and inexpensive or no-cost way to get these services at your custom domain.(just like http://gmail.vu.edu.pk or http://mail.haroonidrees.com).

Google Apps Education Edition
An Education Edition is offered at no cost to K–12
and higher education. As Google said

"Google Apps for Education is free.This includes user accounts for incoming students in the future. As you may know, Google was founded by a research project at Stanford University, and this is just one way we can give back to the educational community."

Google Apps allows institutions to use their own domain name with the service and to customize the interface to reflect the branding of that institution.
The Url to access Google Apps is
http://www.google.com/a/
Why Educational should use Google App
The link explain better reason of using Google Apps
http://www.google.com/a/help/intl/en/edu/sell.html

Standard Edition

It is another version of Google Apps which also is free.It facilitate collaboration for an organization ,small business, business startup or communities less than 50 users with your custom domain.
Standard Edition offers

Same storage space as regular gmail.com accounts
Text ads mandatory
Limited to 50 Users
Email attachments cannot be any larger than 10 megabytes.

Premier Edition.
This is the paid version of Google Apps.It facilitate corporates ,medium or large organization.This is exactly a cloud computing concept which describe that modern users will "rent" or borrow online software instead of actually purchasing and installing it on their home computers and decrease of maintenance headache.

50 $USD / account / year
25 GB space for e-mail
Text ads optional
Integrated Postini "security, compliance, policy management, and message recovery services"
Conference room/resource scheduling
99.9% e-mail uptime guarantee
APIs for Single Sign On, etc.
24/7 phone support
3rd party applications and services
Google Video (Private company version of Youtube.)

Add Struts-2 Support in NetBeans

2009-10-08T10:58:00.000-07:00

Add struts-2 support in netbeans in very easy

Simple download plugin from below link
https://nbstruts2support.dev.java.net/servlets/ProjectDocumentList?folderID=9422%26expandFolder=9422%26folderID=8962
Go to Tools - Plug ins-Download-Add Plugin
Restart the NetBeans IDE when prompt
Create New Web Project ---Next---Next--Struts-2
You can also add spring and sitemesh support in struts-2 using plugin .It automatically configure all the things for you see below images

and have fun

Add Google App engine Support in Netbeans

2009-10-08T10:13:00.001-07:00

Add Google App engine Support in Netbeans is very easy. To install app engine plugin follow the below steps.

1. Go to Tools - Plugins and select Settings tab.
2. Click Add button and type 'App Engine' as name of Update center and following URL into URL text field. Click to OK button.

For NetBeans 6.7.1 use http://kenai.com/projects/nbappengine/downloads/download/1.0_NetBeans671/updates.xml

For NetBeans 6.8 use http://kenai.com/projects/nbappengine/downloads/download/Latest_NetBeans68/updates.xml

1. Switch to Available Plugins tab and choose Google App Engine modules (server, configuration, deployment, editor hints)
2. Click to Install button

After that follow below links steps

http://kenai.com/projects/nbappengine/pages/Home

Adding Urdu Support in Ubuntu

2009-08-18T22:45:00.000-07:00

Ubuntu provides full support for reading and writing Urdu but it requires some packages to be installed.

To configure Urdu in Ubuntu follow the below link
http://ubuntu.sabza.org/2007/05/16/enabling-urdu-support-in-ubuntu/

NetBeans and Microsoft Visio's Open Source Alternatives(3/3)

2009-08-14T00:38:00.000-07:00

In my last two blog entries I mentioned Microsoft Visio's Open Source Alternatives softwares and its features, Now time to come to write about my favorite IDE Netbeans. With its bundle of features it also provides the feature for UML modeling with in an IDE great.

NetBeans And UML
To enable UML Module in IDE click on menu Tools--->Plug-in. The below pop-up will appear. Search UML in search textbook,click UML and push install button. The UML Module will install and ready for use after reboot your IDE.

NetBean's UML Module offer the functionality of creating activity diagram,class diagram,sequence diagram,state diagram and use case diagram in a platform and language independent way. It also provides the forward engineering and reverse engineering option for Oops diagrams in a very user friendly way.

I found few images which I would like share with you to give some feel of NetBean's UML Module.

Following are images.

NetBeans And ERD
The module, I am missing in these days which is ERD Module of Netbeans which was available before 6.x version but not yet available for current NB 6.7 release, as their commitment it will be available with netbeans 6.8.

In short we have lot of open source options to work on different diagrams we already talked about Argouml ,DB designer ,DIA and other different options . I love Netbeans way, reason it provides every thing with in one umbrella.

Refrences

Complete tutorial for UML Diagrams in Netbeans
http://www.netbeans.org/kb/60/uml/

Below video illustrate reverse rngineering feature NB's UML Module

Microsoft Visio's Open Source Alternatives(2/3)

2009-08-05T10:21:00.000-07:00

In my last blog entry I shared one open source software ArgoUML which targeted to all UML diagrams .In today's we will see two another open source softwares which mostly I use in my profession to create diagrams, first one targets to ERD or db diagrams with name DB Designer who can does more then visio as ERD or DB is concern and second one targets to all type of diagrams with the name DIA, calls roughly inspired by the commercial Windows program 'Visio'

DB Designer

Db Designer is a visual database design system that integrates database design, modeling, creation and maintenance into a single, seamless environment.It combines professional features and a clear and simple user interface to offer the most efficient way to handle your databases.I simply call it "Too rich in all database related modeling".

DBDesigner also comparable with products like Oracle's Designer©, IBM's Rational Rose©, Computer Associates's ERwin© and theKompany's DataArchitec

Some of the listed features are

Available on Linux / MS Windows
User Interfaced based on industry standard layouting software(Canvas navigation similar to Adobe Illustrator and Photoshop,Palettes (docked / floating) including "Bird Eyes view",Available objects include tables, realtions, labels, regions, images,Extensive Drag'n'drop support,Extensive Popup-Menu support,Advanced Editors,UNLIMITED Undo-/Redo- functions,Copy-/Cut-/Paste clipboard functions (XML, DDL),Align functions etc).
Design Mode / Query Mode
Reverse engineering MySQL, Oracle, MSSQL and any ODBC databases
Userdefined schema-generation
Model-To-Database syncronisation
Index support
Automatic foreign key placement
Weak entity support
Standard Inserts storing and sync
Full documentation capabilities
Advanced model printing
Output as image
All MySQL datatypes with all options
User defined datatypes
Database storage, ability to save model within database
Network-/Multiuser access through database storage
Version control
SQL Query Builder
SQL Command History
SQL Command storage within model
Plugin interface

DIA

Dia is roughly inspired by the commercial Windows program 'Visio', though more geared towards informal diagrams for casual use. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and many other diagrams. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape.

I like its one really cool feature which calls creates new shapes .It is perfect free alternative of Visio which available for widows and linux but one con ,not for me, it is not a very much user friendly like Microsoft Visio.

To see DIA complete documentation click here

Conclusion:
ArgoUML ,DBDesigner and DIA are providing the perfect open source free alternative for Microsoft Visio.I am professionally using these softwares for designing artifacts ,modeling softwares diagrams and other flow diagrams, Some other alternatives are also available which I haven't experienced other softwares and complete list of Microsoft Visio alternative available at below link

http://alternativeto.net/desktop/microsoft-visio/?platform=windows

Microsoft Visio's Open Source Alternatives(1/3)

2009-08-01T00:42:00.000-07:00

Most of the peoples are too much use to with Microsoft Visio.In today's blog entry I will discuss some open source alternatives of Microsoft Visio and we will see how rich these tools are in terms of their features and functionalities and I personally prefer these tools over Microsoft Visio .Not just only these tools are free/open source but also due to these tools are more user friendly and rich in their functionalities.

I am going to discuss just few tools which I explored personally which are

Argo UML (Targeted for all UML Diagrams)
DB Designer(Targeted to only ERD Diagram)
DIA (Too rich tool all type modeling diagram including UML,ERD,Network diagram etc)
Netbeans Plugins (I like too much because I can build artifact under one umbrella

Open Office Drawing ,StarUML and many other options are which available I have no experience how they are.

Today I will just discribe ArgoUML features and in next two blogs I will describe other remaining tools ArgoUML
ArgoUML is a powerful yet easy-to-use interactive, graphical software design environment that supports the design, development and documentation of object-oriented software applications. Like many other UML tools of this caliber ArgoUML provides code generation. The following programming languages are support for code generation: Java, C++, C# and PHP. The Java support is best since it can be used for round-trip engineering using the reverse engineering feature. ArgoUML also has partial support for user models such as decision model, goals model, etc. Finally diagrams can be exported in many graphical formats, primarily GIF, PNG, PS and SVG.

Main features:

Open standards: UML ,XMI, SVG and PGML

100% Platform independent thanks to the exclusive use of Java

Open Source, which allows extending or customizing.

Cognitive features like: reflection-in-action, opportunistic design, comprehension and problem solving

It is able to create and save most of the nine standard UML diagrams.

Ease of use and User friendliness

Reverse Engineering and Code generation

How to install ArgoUML?
http://argouml-stats.tigris.org/documentation/quick-guide-0.28/ch02.html

How to Use ArgoUML?
http://argouml-stats.tigris.org/documentation/manual-0.28/

Voice chat with Google talk user using Empathy Messenger

2009-07-27T03:21:00.000-07:00

Few days back one of my unknown friend called me and asked to me that can we do voice chat on Ubuntu Linux with Google talk? and he told me that Pidgin and Gaim messengers don't support voice chat with Google talk in current release(Pidgin is working on video and voice support for details click on link).At that time I don't know its detail, After doing some search I got solution for this matter.

We can do voice with Google talk on Ubuntu using Empathy Messenger. Empathy Messenger consists of a rich set of reusable instant messaging widgets, and a GNOME client using those widgets. It uses Telepathy and Nokia’s Mission Control, and reuses Gossip’s UI. To Setup Empathy and Google talk click here

The Free and Open Productivity Suite

2009-07-26T06:51:00.001-07:00

Open office (OO)3.1 is available for download(since May 2009) with great improvements and many new rich features. I agree Microsoft is leader as far as office products is concern but what point I am willing to discuss here, what normal users requires and what features most of the peoples are using. All features provide us to open office with great user friendly way, I am not geek office user but what I need I got from open office.
Peoples ask to me, Is Open Office is compatible with Ms office 2007 ,then I ask to those people Is Ms Office 2007 compatible with Open Office .You can easily open Ms office 2007 file (docx,pptx) on Open Office and can edit and save it on 2003 doc formate but Ms office 2007 not provides this functionality in inverse.

I gather few of users experiences from Internet and feature of Open Office what it provides free of cost which I `would like to share with you .

Features

Free Of Cost
Easy to Use
Multi-Platform
Multi-lingual
Compatible with all office suit including Ms Office 2003/2007 (Ms Office is not compatible)
Power full extensions/plug-ins
Almost provides all features of Ms office in a user friendly way
Periodically updates and new releases
etc

Open office 3.1 new feature list available at http://www.openoffice.org/dev_docs/features/3.1/

Below are some user experiences

http://openoffice.blogs.com/openoffice/2009/06/openofficeorg-31-outline-level-feature-.html

Conclusion :
Use free office suit OO ,it provides all functionality which we required (Ubuntu built in installs OO as Office productivity tool)and make piracy free Pakistan

Adobe Photo Shop On Ubuntu

2009-07-24T04:12:00.000-07:00

Ubuntu provides GIMBS software as alternative of Adobe Photo shop but its not too much rich as Adobe Photo shop so you can run adobe photo using wine see below link for configuring Photo Shop

http://luiscosio.com/how-to-adobe-photoshop-cs2-on-ubuntu-10-steps
http://wiki.winehq.org/AdobePhotoshop

open-source security framework

2009-07-21T12:22:00.000-07:00

Apache Shiro is a powerful and flexible open-source security framework that cleanly handles authentication, authorization, enterprise session management and cryptography.

see below link
http://cwiki.apache.org/SHIRO/index.html

50 Best jQuery plugins - June 2009

2009-07-21T09:51:00.000-07:00

click here to find fifty best plugins of JQuery

Enable XDMCP protocol in Terminal Server Client ubuntu

2009-07-21T03:49:00.000-07:00

XDMCP (X Display Manager Control Protocol) to provide a solution for the X-Terminal and to provide a platform of efficient Remote X Apps environment.

To enable XDMCP in ubuntu install xnest using command
sudo apt-get install xnest

after installing xnest
Navigate to Application---> Internet ---> Terminal Server Client
XDMCP protocol is enable in Terminal Server Client in utility

Open Source Options for Project Management Tools

2009-07-21T01:18:00.000-07:00

A very good link related to open source project management tools. I am currently using OpenGoo for this purpose which is also listed in this article.

http://www.cyberciti.biz/tips/open-source-project-management-software.html

Virtualization Alternatives

2009-07-18T20:32:00.000-07:00

Virtualization is the method by which guest operating systems can run within another "host" operating system

Available Options for virtualization as my knowledge

Sun VirtualBox
Virtual Pc for Microsoft (I don't discuss here, people complaining about its performance lack and other integration issue on web) .
VMWare Server (I don't discuss here,Its not user friendly ,lightweight as virtualbox)

I tried myself only sun Virtualbox with Ubuntu host and guest version windows vista and XP and host XP and guest Ubuntu .I find it really awesome ,even no one can feel that vista or XP running over Ubuntu (when its full screen mode) .It share all devices like network ,sound,usb serial port, display card what ever in your system.

Some VirtualBox features written on its website (which I tested myself) which are:

Modularity. VirtualBox has an extremely modular design with well-defined internal programming interfaces and a client/server design. This makes it easy to control it from several interfaces at once: for example, you can start a virtual machine in a typical virtual machine GUI and then control that machine from the command line, or possibly remotely. VirtualBox also comes with a full Software Development Kit: even though it is Open Source Software, you don't have to hack the source to write a new interface for VirtualBox.
Virtual machine descriptions in XML. The configuration settings of virtual machines are stored entirely in XML and are independent of the local machines. Virtual machine definitions can therefore easily be ported to other computers.
Guest Additions for Windows and Linux. VirtualBox has special software that can be installed inside Windows and Linux virtual machines to improve performance and make integration much more seamless. Among the features provided by these Guest Additions are mouse pointer integration and arbitrary screen solutions (e.g. by resizing the guest window).
Shared folders. Like many other virtualization solutions, for easy data exchange between hosts and guests, VirtualBox allows for declaring certain host directories as "shared folders", which can then be accessed from within virtual machines.

A number of extra features are available with the full VirtualBox release only (see the "Editions" page for details):

Virtual USB Controllers. VirtualBox implements a virtual USB controller and allows you to connect arbitrary USB devices to your virtual machines without having to install device specific drivers on the host.
Remote Desktop Protocol. Unlike any other virtualization software, VirtualBox fully supports the standard Remote Desktop Protocol (RDP). A virtual machine can act as an RDP server, allowing you to "run" the virtual machine remotely on some thin client that merely displays the RDP data.
USB over RDP. With this unique feature, a virtual machine that acts as an RDP server can still access arbitrary USB devices that are connected on the RDP client. This way, a powerful server machine can virtualize a lot of thin clients that merely need to display RDP data and have USB devices plugged in.

My recommendation If you need to work on multiple Os , don't think just install sun's virtualbox.

Vista Run Over Ubuntu Host
References
http://www.virtualbox.org/wiki/VirtualBox
http://www.brighthub.com/computing/windows-platform/articles/29183.aspx
http://www.mangoorange.com/2007/07/05/5-reasons-why-you-should-use-virtualbox-instead-of-virtualpc-or-vmware/

Maven and Netbeans 6.7

2009-07-18T07:05:00.001-07:00

Recently Sun relases netbeans 6.7 a great and mature IDE.I am using Netbeans 6.7 from day one when it relased and ready to download.It provides lot of feature like application servers, databases, profilers, debuggers, RESTFul services, SOAP support, XML editors and database browsers etc But one new feature I find really good and productive which shifted myself from eclips to netneans 6.7 .

It maven support. Netbeans 6.7 offer native support for maven2 with no need for additional plug-ins or workarounds. I find its support much better then maven's eclips support. Netbeans 6.5.1 used Ant for the entire build process,. Ant support works well, but the Ant scripts generated were complicated and difficult to maintain without NetBeans. Maven projects can now be opened and built directly in NetBeans without requiring conversion or adaptation. Maven archetypes are available for creating Java EE (Java Enterprise Edition) projects. Deployment, remote debugging and profiling now also work with Maven.

Its new version includes additional useful functions such as visual dependency graph of module relationships, auto-completion for searching for dependencies in POM (Project Object Model) and full-text searching in the repositories.

Its provide built-in support to creating maven standalone projects,web project and enterprise application.Maven project makes your project indpendance of IDE.Maven project created in netbeans automatically open in IntelliJ Idea or Eclips as maven project no workaround needed to convert project type specific to IDE.

you can also customize your maven global settings from options and create your shortcut for mostly used goal in user friendly way.Currently I am using Netbeans IDE for my professional work.

It also provides lots of other good options Kenai integration,a powerfull UML Designer plugin ,better svn support,web services support and lot of more things which I didn't explore.

Open Source OS Ubuntu

2009-07-10T23:26:00.000-07:00

Open Source OS Ubuntu

From few days I am thinking about how to eliminate software piracy from Pakistan .What are softwares mostly used in Pakistan illegally ,The answer is straight forward “Microsoft Windows” and “Microsoft Office”. Is any open source alternative available ? I think yes its Ubuntu. The second question raise in my mind, Are all peoples satisfy with using of Microsoft Windows ? I think no because of viruses and system got slow after few month.

I started my career by using open source, I learned Java ,mostly used open source software in my development but these software run over Microsoft Windows and I disliked and were thinking about is alternative which is equally user friendly and stable.

Ubuntu is Debian distribution of Linux provides solution for my all question .Approx 2 years I was using Linux fedora but its resource hungry, not too much user friendly, lot of hardware driver issues,much work required to do on terminal, not provides complete solution for end users. When I installed Ubuntu I got surprised. It automatically installed all hardware driver (rich repository of driver) , It is light weight not much resources required and solved my all problems,It is user friendly. I am going to write few of qualities of Ubuntu that I really I like.

User Friendly
Easy to Install
Automatically detect all hardware and install all driver
Automatically install all required System utilities like
- Open office (Alternative to Ms Office )
- PDF Reader
- Archived solution
- Messenger(Pidgin)
- Email client (Evolution)
- Web Browser (Firefox)
- Audio and Video player ,
- Photo and Design Editor (GIMP Image editor like adobe photo shop).

Note : The above softwares automatically install with Ubuntu but there all lots of open source alternative available for these system utilities which we can install using Add/Remove Application of Ubuntu.

Add/Remove Application (Add/Remove Applications is a simple graphical way of installing and removing applications in Ubuntu. To launch Add/Remove Applications click Applications->Add/Remove Applications on the desktop menu system. It automatically searches a compatible required software from web ,download it and install it).
Webmin Software (A Web based System administration tool for linux)
Mac like awesome graphic
Wine and Mono (hel to run Windows based software over linux)
No Virus issue (Al hamd-o-lillah)
Network Manager to configure network just like windows
etc

One more advice for those people who are really depends on windows due to some dependent software ,Use virtual box over Ubuntu and runs only dependent software on it :)

Conclusion

Ubuntu and its System utilities perfectly provide alternative of Ms windows so don't use pirate software and eliminate software piracy from Pakistan and decrease your headache of viruses :)

Oracle Bought Sun (future of open source specially MySql)

2009-04-20T08:35:00.000-07:00

Oracle Bought Sun (future of open source specially MySql)
Today I saw news that oracle bought sun .Sun acquisition is expected according to last week speculating news IBM buying out Sun.
Oracle is database leader in market and MySql is open source databases which is growing quickly in market and off course was a competitor of oracle. Now oracle buys Sun mean Oracle buys MySql. What will be the future of MySql? What will be the oracle strategy for MySql?
I’d like hear your thoughts

Open Source Solution for Database Synchronization

2009-04-19T22:55:00.000-07:00

Some time we need solution for database synchronization/replication in application end.Databases itself provides database replication solution but it has limitation when some customization required.

Cases When This Type Of System Required

It could be help when limited number of tables are need synchronization functionality.
Offline/Online management for data synchronization.
Replication support needed across different combination of supported databases.
Replication needed on partial data (Tables, Rows and column can be customize).
etc

Thanks to open source community for providing us solution for this specific problems too.I only mention two open source solutions which I explore little bit.

SymmetricDS - SymmetricDS is a web based/Standalone service/Embedded application, database independent, data synchronization system. Beyond replicating tables between relational databases the software incorporates functionality to handle a large number of databases, manage low-bandwidth connections and work within periods of network outage. The system supports two way replication, guaranteed delivery and multiple active schemas.

Daffodil Replicator - Daffodil Replicator performs data replication based on the 'Publish and Subscribe' model. Replicator supports bi-directional data replication by either capturing a data source snapshot or synchronizing the changes. It monitors data changes, synchronizes all data changes on periodic basis or on-demand. Replicator can use pre-defined conflict resolution algorithms to resolve conflicts between data sources.

Mysql Replication Setup

2009-03-16T22:41:00.000-07:00

Good links for setting up mysql replication .Always remember when you are going to setup mysql replication Use Mysql verison greater then 5.045

http://dev.mysql.com/doc/refman/5.0/en/replication-howto.html
http://www.onlamp.com/pub/a/onlamp/2006/04/20/advanced-mysql-replication.html

Top-83-mysql-performance-tips

2009-03-16T22:30:00.000-07:00

MySQL is a widely used and fast SQL database server. It is a client/server implementation that consists of a server daemon (mysqld) and many different client programs/libraries.

You can check the same tips from here.Here is very useful tips for all mysql DBA's,Developers these tips are noted from MySQL Camp 2006 suggested by mysql community experts.

Don't Index Everything
Use benchmarking
Minimize traffic by fetching only what you need.
1. Paging/chunked data retrieval to limit
2. Don't use SELECT *
3. Be wary of lots of small quick queries if a longer query can be more efficient
Use EXPLAIN to profile the query execution plan
Use Slow Query Log (always have it on!)
Don't use DISTINCT when you have or could use GROUP BY
Use proper data partitions
1. For Cluster. Start thinking about Cluster *before* you need them
Insert performance
1. Batch INSERT and REPLACE
2. Use LOAD DATA instead of INSERT
LIMIT m,n may not be as fast as it sounds
Don't use ORDER BY RAND() if you have > ~2K records
Use SQL_NO_CACHE when you are SELECTing frequently updated data or large sets of data
avoid wildcards at the start of LIKE queries
avoid correlated subqueries and in select and where clause (try to avoid in)
config params --
no calculated comparisons -- isolate indexed columns
innodb_flush_commit=0 can help slave lag
ORDER BY and LIMIT work best with equalities and covered indexes
isolate workloads don't let administrative work interfere with customer performance. (ie backups)
use optimistic locking, not pessimistic locking. try to use shared lock, not exclusive lock. share mode vs. FOR UPDATE
use row-level instead of table-level locking for OLTP workloads
Know your storage engines and what performs best for your needs, know that different ones exist.
1. use MERGE tables ARCHIVE tables for logs
Optimize for data types, use consistent data types. Use PROCEDURE ANALYSE() to help determine if you need less
separate text/blobs from metadata, don't put text/blobs in results if you don't need them
if you can, compress text/blobs
compress static data
don't back up static data as often
derived tables (subqueries in the FROM clause) can be useful for retrieving BLOBs w/out sorting them. (self-join can speed up a query if 1st part finds the IDs and use it to fetch the rest)
enable and increase the query and buffer caches if appropriate
ALTER TABLE...ORDER BY can take chronological data and re-order it by a different field
InnoDB ALWAYS keeps the primary key as part of each index, so do not make the primary key very large, be careful of redundant columns in an index, and this can make the query faster
Do not duplicate indexes
Utilize different storage engines on master/slave ie, if you need fulltext indexing on a table.
BLACKHOLE engine and replication is much faster than FEDERATED tables for things like logs.
Design sane query schemas. don't be afraid of table joins, often they are faster than denormalization
Don't use boolean flags
Use a clever key and ORDER BY instead of MAX
Keep the database host as clean as possible. Do you really need a windowing system on that server?
Utilize the strengths of the OS
Hire a MySQL (tm) Certified DBA
Know that there are many consulting companies out there that can help, as well as MySQL's Professional Services.
Config variables & tips:
1. use one of the supplied config files
2. key_buffer, unix cache (leave some RAM free), per-connection variables, innodb memory variables
3. be aware of global vs. per-connection variables
4. check SHOW STATUS and SHOW VARIABLES (GLOBAL|SESSION in 5.0 and up)
5. be aware of swapping esp. with Linux, "swappiness" (bypass OS filecache for innodb data files, innodb_flush_method=O_DIRECT if possible (this is also OS specific))
6. defragment tables, rebuild indexes, do table maintenance
7. If you use innodb_flush_txn_commit=1, use a battery-backed hardware cache write controller
8. more RAM is good so faster disk speed
9. use 64-bit architectures
Know when to split a complex query and join smaller ones
Debugging sucks, testing rocks!
Delete small amounts at a time if you can
Archive old data -- don't be a pack-rat! 2 common engines for this are ARCHIVE tables and MERGE tables
use INET_ATON and INET_NTOA for IP addresses, not char or varchar
make it a habit to REVERSE() email addresses, so you can easily search domains
--skip-name-resolve
increase myisam_sort_buffer_size to optimize large inserts (this is a per-connection variable)
look up memory tuning parameter for on-insert caching
increase temp table size in a data warehousing environment (default is 32Mb) so it doesn't write to disk (also constrained by max_heap_table_size, default 16Mb)
Normalize first, and denormalize where appropriate.
Databases are not spreadsheets, even though Access really really looks like one. Then again, Access isn't a real database
In 5.1 BOOL/BIT NOT NULL type is 1 bit, in previous versions it's 1 byte.
A NULL data type can take more room to store than NOT NULL
Choose appropriate character sets & collations -- UTF16 will store each character in 2 bytes, whether it needs it or not, latin1 is faster than UTF8.
make similar queries consistent so cache is used
Have good SQL query standards
Don't use deprecated features
Use Triggers wisely
Run in SQL_MODE=STRICT to help identify warnings
Turning OR on multiple index fields (<5.0)>
/tmp dir on battery-backed write cache
consider battery-backed RAM for innodb logfiles
use min_rows and max_rows to specify approximate data size so space can be pre-allocated and reference points can be calculated.
as your data grows, indexing may change (cardinality and selectivity change). Structuring may want to change. Make your schema as modular as your code. Make your code able to scale. Plan and embrace change, and get developers to do the same.
pare down cron scripts
create a test environment
try out a few schemas and storage engines in your test environment before picking one.
Use HASH indexing for indexing across columns with similar data prefixes
Use myisam_pack_keys for int data
Don't use COUNT * on Innodb tables for every search, do it a few times and/or summary tables, or if you need it for the total # of rows, use SQL_CALC_FOUND_ROWS and SELECT FOUND_ROWS()
use --safe-updates for client
Redundant data is redundant
Use INSERT ... ON DUPLICATE KEY update (INSERT IGNORE) to avoid having to SELECT
use groupwise maximum instead of subqueries
be able to change your schema without ruining functionality of your code
source control schema and config files
for LVM innodb backups, restore to a different instance of MySQL so Innodb can roll forward
use multi_query if appropriate to reduce round-trips
partition appropriately
partition your database when you have real data
segregate tables/databases that benefit from

UTF8 Setting in UTF-8 in MySQL, Hibernate and WebApps

2009-03-16T21:47:00.000-07:00

Usually web application development is strainght forward for english language but some time we have to develop application which multi-lingual(character support required which are other then english).Multi-lingual is not a trivial as english.Internationlization options using application resources or resource bundle is avaible for labeling in diffrent langauges but some time we have manupulate,store data this data which required some settings.

For multi-language we have to change application,database encoding into UTF-8.

UTF-8

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is able to represent any character in the Unicode standard, yet the initial encoding of byte codes and character assignments for UTF-8 is backwards compatible with ASCII. For these reasons, it is steadily becoming the preferred encoding for e-mail, web pages and other places where characters are stored or streamed.

I have found very good blog related to this topic which is http://www.warski.org/blog/?p=4

I have to add some new setting related to mysql database

Add these line in my.cnf

[mysqld]

default-character-set=utf8

default-collation=utf8_unicode_ci

character-set-server=utf8

collation-server=utf8_unicode_ci

init_connect='SET NAMES utf8'

[client]

default-character-set=utf8

Cleared SCDJWS 5.It was really Hard

2009-02-12T10:41:00.000-08:00

Today, I saw the status of my SCDJWS exam at prometric site. I found the result after a long wait approx two and half months. Normally Sun's beta exam results are announced in 6 weeks but this one took more than normal time. The paper was very tough and you can get the idea by viewing their objective at http://www.sun.com/training/catalog/courses/CX-310-230.xml. This was beta exam and beta exams are more difficult than regular exams.

Good news for me that I passed this exam by the Grace Of All Mighty Allah and am still waiting for certificate and mark sheet.

The paper was too hard and lengthy. There were 150 questions with 3 hours and 15 minutes to answer. The test is horribly tiresome and cumbersome. After 30 questions my head was already hurting. After 80 questions it was even difficult to read correctly the questions due to tiredness. That day I realized that continuous sitting in front of the computer with concentration can destroy a man. In the last 20 or 30 questions I was really fed up and the words appeared to dance in the front of my eyes.

For preparing this exam I recommend a few links below which helped me in my preparation for this exam.

http://java.sun.com/webservices/docs/2.0/tutorial/doc/

http://java.sun.com/webservices/reference/tutorials/wsit/doc/index.html

http://www.ws-i.org/Profiles/BasicProfile-1.1.html (Specially concentrate on WS-I Basic Profile)

http://java.boot.by/wsd-guide/

Templates in google appengine

2008-12-17T18:26:00.000-08:00

Externalizing html from core business logic is very good technique to create code simple and understandable. Embedded HTML in code is difficult to maintain. To Avoid embedded HTML in code python provides us different templating systems which are EZT, Cheetah, ClearSilver, Quixote, and Django , which are supported by google appengine. We use Django template engine in our example.
Create Model class with name message.py

from google.appengine.ext import db

class Message(db.Model):

content = db.TextProperty(required=True)

who = db.StringProperty()

when = db.DateTimeProperty(auto_now_add=True)

create main.py

class MainHandler(webapp.RequestHandler):

def get(self):

messages = db.GqlQuery('SELECT * FROM Message '

'ORDER BY when DESC').fetch(100)

values = {'messages': messages}

self.response.out.write( template.render('list.html', values))

def main():

application = webapp.WSGIApplication([('/', MainHandler)], debug=True)

wsgiref.handlers.CGIHandler().run(application)

if __name__ == '__main__':

main()

list.html

<head><title>..............</title>

<style>

.even {

background-color:#DDDDDD

}

.odd {

background-color:#FFFFFF

}

</style>

</head>

<body>

<table width="100%" cellspacing="0" cellpadding="0" >

{% for message in messages %}

<tr class="{% cycle even,odd %}" >

<td colspan="3">

<table width='100%' border=1>

<tbody>

<tr class="{% cycle even,odd %}">

<td width="20%" valign="top">Nick</td>

<td align="right" width="20%" valign="top">{{message.when}}</td>

</tr>

<tr height="40">

<td width="20%" valign="top">{{message.who}} </td>

<td width="80%" valign="top">{{message.content}}</td>

</tr>

</tbody>

</table>

</td>

</tr>

<tr height="5px"><td colspan='3' align='center'> </td></tr>

{% endfor %}

</table>

</body>

</html>

create app.yaml

application: template

version: 1

runtime: python

api_version: 1

- url: /.*

script: main.py

What the above code does

In meesage.py file we define a model Message with three properties: content,who and when which plays a role of domain object and a db.This is part of App Engine not a python and It uses App Engine big table infrastructure which takes care of all of the distribution, replication and load balancing.

for detail refrence of entities and model visit http://code.google.com/appengine/docs/datastore/
In main.py we define MainHandler class which serve as request handler of all get requests.We use GQL in our code for getting all message model objects. After fetching all results we assign these meesage to values and reponse back to list.html page. self.response.out.write use for writing reponse and template.render method use for rendring list template.
After that we create html file with the name of list.html .In this html file we use Django script for manupolation Message objects. {% for message in messages %} is just foreach like code structure and "{% cycle even,odd %}" uses for applying style class alternatively each time. you can use any number of values, separated by commas for alternatively.

Using google webapp framework in google appengine

2008-12-17T18:23:00.000-08:00

Google includes python based web application framework with app engine.This framework pretty similar with MVC pattern.A webapp application has three parts:

one or more RequestHandler classes that process requests and build responses
a WSGIApplication instance that routes incoming requests to handlers based on the URL
a main routine that runs the WSGIApplication using a CGI adaptor.

Now the time to look at example code of webapp framwork.We are going to write webapp.py

from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app

class MainPage(webapp.RequestHandler):
def get(self):
self.response.headers['Content-Type'] = 'text/plain'
self.response.out.write('Hello World from the webapp framework!')

application = webapp.WSGIApplication(
[('/', MainPage)],
debug=True)

def main():
run_wsgi_app(application)

if __name__ == "__main__":
main()

our app.yaml

application: webapptest

version: 1

runtime: python

api_version: 1

handlers:

- url: /

script: webapp.py

http://code.google.com/appengine/docs/webapp/
What the above code does

The webapp module is in the google.appengine.ext
This code defines one request handler, MainPage, mapped to the root URL (/).We can map diffrent urls with diffrent handlers
When webapp receives an HTTP GET request to the URL /, it instantiates the MainPage class and calls the instance's get method. Inside the method, information about the request is available using self.request. Typically, the method sets properties on self.response to prepare the response.

Now copy the webapptest folder to google appengine folder and type localhost:8080/ !

learning google appengine in 5 minutes

2008-12-17T08:11:00.000-08:00

Creating an App Engine application is easy, and only takes a few minutes.

First you need to download the following packages

Creating a Simple Request Handler

Create a directory named helloworld. All files for this application reside in this directory.Inside the helloworld directory, create a file named helloworld.py, and give it the following contents:

print 'Content-Type: text/plain'  
print '' print 'Hello, world!'


This Python script responds to a request with an HTTP header that describes the
content, a blank line, and the message Hello, world!.

Creating the Configuration File

An App Engine application has a configuration file called app.yaml. Among other things, this file describes which handler scripts should be used for which URLs.

Inside the helloworld directory, create a file named app.yaml with the following contents:

application: helloworld
version: 1
runtime: python
api_version: 1

handlers:
- url: /.*
script: helloworld.py

Testing the Application

google_appengine/dev_appserver.py helloworld

Type the following URL and enjoy!

http://localhost:8080/

Reference
http://code.google.com/appengine/docs/gettingstarted/

Creating FireFoxe Extension

2008-11-23T06:07:00.000-08:00

Creating FireFox plugin is not too much tricky task .In last few days I need to develop firefox simple extension. I found it easy and all help available in mozilla firefox web site http://kb.mozillazine.org/Getting_started_with_extension_development and some best tutorials are also available.

You can found all basic steps in above link and some of my findings are below

1) Menu ,Menu Items and Tools bars can be added using xul controls but some times we need to add menu-items in existing firefox menus for example file-->My Hello World Menu-Item

You need to understand browser.xul file for this case which is located under $Mozilla-Home/lib/browser.jar/content/browser

For example we need to add menu-item under file menu which id in browser.xul file is id="menu_FilePopup"

So write in plug-in xul file

<menupopup id="menu_FilePopup">
<menuitem id="helloworld-hello" label="&helloworld; nsertafter="menu_saveFrame"
oncommand="HelloWorld.onMenuItemCommand(event);"/>
</menupopup>

Note: menu_saveFrame is id save menu-item under file menu

In same way you can add any of button , image in popup menu ,tool bare and so on ...

2) Second I need to get current content url or current tab url with in plug-in's javascript files which can be get by using window.content.document.location not by window.location

Microsoft related stuff will be available soon

2008-02-09T11:42:00.000-08:00

stay tune and hold on.you will soon read my experience of Microsoft Plateform specially latest window 7 Os ,Dot Net and Cloud Azure

Java Standard Tag Library (JSTL) Advantages

2008-02-07T10:34:00.000-08:00

Java Standard Tag Library (JSTL) Advantages

JSTL, which stands for Java Server Pages Standard Tag Library, is a collection of custom JSP tag libraries that provide common Web development functionality. It was originally developed as the open source Apache Jakarta Taglib project but is now managed by the Java Community Process (JCP) under JSR-52 and Standard by Sun. JSTL's key goal was to remove the need for J2EE Web developers having to build their own proprietary tag libraries for common Web development processes.

The common Web development areas which JSTL covers include:

Conditionals
Iterations
Text formatting
Database access (SQL)
XML processing
Internationalization
Accessing URL resources

Problems With Scriptlet
Java Server Pages Provide a way to develop presentation layer by merging static HTML code and dynamic Java Code using script. It is best as compared servlet but programmers or web developers who work on presentation layer mix java code.

Scriptlet code is not reusable--Scriptlet code appears in exactly one place: the JSP page that defines it.
Scriptlets encourage copy/paste coding--Because scriptlet code appears in only one place, it is often copied to a new context.
Custom tags centralize code in one place. When a tag handler class changes, the tag's behavior changes everywhere it is used.
Scriptlets mix logic with presentation-. Scriptlets can easily confuse the intent of a JSP page by expressing program logic within the presentation.
Scriptlets break developer role separation.
Scriptlets make JSP pages difficult to read and to maintain
Scriptlet compile errors can be difficult to interpret
Scriptlet code is difficult to test

<% if

((User)session.getAttribute("user")).getName().equals("test") {

%>

<% }

%>







<>test =" $ { user.name  = =  'test'

} " >

.......

<

/ c : i f >





JSP Standard Taglib

Library Advantages



1. Standard Tag

Once standardized, JSTL will provide a rich layer of portable

functionality to JSP pages.

It is easy for developer to

understand other code easily. Before Jstl every made his propriety tag

which are different for

every one now its standard and easy

to understand for all. It also is mature and tested.



 2.

Make Code Neat and Clean It makes the code neat and clean usually

scriplet confuse the developer due to mixing of java and html



code. it

makes clean the code



 3

.Automatic JavaBeans Introspection Support Here is

little advantage to JSTL over JSP scriptlets. But if you consider that

JSTL's

expression language handles JavaBean introspection

automatically.



 4.Easier

for Humans to Read JTSL is based on XML, which is very similar to HTML.

Rather than spending a great deal of time learning

where to

put semicolons and how to construct code blocks, HTML programmers can

fall right into a programming language that is similar to

HTML





5.Easier for Computers

to Read It is also much easier for computers to read. Tools such as

FrontPage and Dream weaver

are generating more and more HTML

code. Although HTML generation tools do a great job of formatting HTML

code, they often

run into problems when this HTML code is

intermixed with JSP scriptlet code. Because JSTL is always expressed in

XML-compliant tags,

it will be easier for HTML generation

tools to parse the JSTL code that is contained within the document



The above

are basic benefits of jstl

.JSTL introduce new way of

development and have lots of benefits in bits and

bytes level

I discussed only bytes level benefits it not easy to cover bites level

in this discussion but it is enough

for

understanding.

My Experience on JSF (Implementation My Faces)

2008-01-22T11:01:00.000-08:00

Java Server Faces web application framework has its own pros and cons. It needs more time to mature .In my experience most of the web applications do similar operations like display grids for showing data list with paging and sorting support , add data form, updating data, deleting data (Basically CRUD operations) uploading and downloading streams etc., with its business logic. Ajax introduces new ways of web application development. I mostly used core ajax for small usage of ajax and if needed more ajax then used prototype, dojo preferred JavaScript tool kit solutions as compared to tags solution. I am expert in struts 1 and made many applications on struts and have seen some other web frameworks like struts 2.0 spring etc. and JSF too. A few month ago I fortunately got an opportunity to work on JSF.

I personally feel jsf provides rapid development but limits you in many cases. I used rich faces library for Ajax and GUI widgets. Used Eclipse as the development Environment.

I made the following observations after using jsf

Nothing happened" problems. Some times validation error occurs without any reason on the combo box.

Doesn’t report meaningful, useful error messages.

Doesn’t Provide Exception handler support like struts.

Ajax support is too easy by using ajax4j tags but it sometimes breaks backing bean population on the submit form.

Hard to use JavaScript with jsf.

No proper display table with paging and sorting support like display tags.

Too many backing beans in session.

Difficult to use jstl with jsf expression language and it creates problems in complex logics.

Cannot send direct request to backing beans where it decides where to go like struts actions. (Sometimes we need to go to the action first and then action decide which jsp will be shown ). I didn’t find this functionality in jsf.

Unit Testing

2008-01-21T10:32:00.000-08:00

‘Testing an application is a frustrating task for me .Configure JUnit and writing the unit test for every method but you can never deny the important of unit testing. Junit framework deserves congratulate for introducing the idea of test-driven development to Java developers and teaching them how to effectively write unit tests. One of friend told me yesterday about Test NG framework The Next Generation Testing Framework. It indeed awesome. To see more info see some link below”

http://www.ibm.com/developerworks/java/library/j-testng/

http://testng.org/doc/documentation-main.html

http://www.javalobby.org/articles/testng/

Its Features

JDK 5 Annotations (JDK 1.4 is also supported with JavaDoc annotations).
Flexible test configuration.
Support for data-driven testing (with @DataProvider).
Support for parameters.
Allows distribution of tests on slave machines.
Powerful execution model (no more TestSuite).
Supported by a variety of tools and plug-ins (Eclipse, IDEA, Maven, etc...).
Embeds BeanShell for further flexibility.
Default JDK functions for runtime and logging (no dependencies).
Dependent methods for application server testing.