How to Implement a Simple Workflow

In this example I create two user a content creator who will create content and a content publisher who will publish the content.

send request

back to creator for modification

Process Definitions

Each workflow definitions is defined by a single XML file.The XML file has several parts which define the workflow. The key parts of the workflow definition are the asset, states, transitions, and tasks. The asset is whatever piece of content is being reviewed and approved in the workflow. States represent stages of the workflow; for example: created, rejected, or approved. Transitions occur between states, and indicate what the next state should be. Tasks are steps in the workflow that require user action.

Enhancing the portlet

This portlet is of course very basic and it could easily be enhanced in several

ways. Some suggestions:

_ Submit to a condor pool or Sun Grid Engine.

_ Let the user choose which computational resource to submit to.

_ Add persistence by saving state to _le or database.

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Liferay Workflow System

Liferay Portal is one of the leading open source portal frameworks.Liferay have the following features

                        Runs on all major application servers and Servlet containers, databases, and operating systems, and over 700 deployment combinations.

                        Uses the latest in Java, J2EE, and Web 2.0 technologies.

                        Uses an open SOA framework.

                        JSR-168/JSR-286 compliant.

                        Out of the box usability over 60 portlets.

                        AJAX-enabled user interface.

                        Full LDAP synchronization and secure Single Sign On (SSO) support.

Liferay portal includes a default workflow engined called Kaleo. Kaleo workflow allows to define any number of simple to complex business processes/workflows by defining everything inside a single XML file.Liferay 6 also provide integration mechanism with the JBPM workflow engine. The workflow is applied out-of-the-box to the following Liferay entities:

1.      Wiki Page

2.      Web Content

3.      Document Library Document

4.      Blogs Entry

5.      Comments

6.      Message Boards Message

There are four portlets related to the workflow that allows the users to manage this system.

                        My Submissions

                        My Workflow Tasks

                        Workflow Configuration

Workflow Portlet.

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What is a WorkFlow

A workflow can be defined as a business process in which information can be passed from one participant to another for action according to a set of procedural rules. The workflow consist of a series of steps and each steps contains tasks where the participant can perform different activites like review, approve, reject, or update an assignement.

Automated workflow is important inside an organization because it ensures maximum throughput and accuracy when distributing work or tasks. It improves the control of a process with less manual intervention, eliminating misplaced work, reducing delays, and ensuring tasks are performed according to your company’s policies and procedures. Workflows automate the flow of employee tasks and activities, reducing the time the process took to complete as well as potential errors caused by human interaction.

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What is MVC

MVC separates the presentation code from the business logic code.

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Recommended Tools For Liferay

The following instructions will help you get your development environment ready for working with the

source code. These instructions are specific to setting up for deployment to Orion server and Tomcat 5.5

developing with Java JDK 1.5. Liferay Portal is compatible with Java 1.4 also and a wide array of

application servers and containers. You will need to adjust your development environment according to

your platform.

Before we can get started, the following components must be installed on your machine.

3.1. JDK 1.5.0 or JDK 1.4.2

1. Download and install JDK 1.5.0 [http://java.sun.com/j2se/1.5.0/download.jsp]. JDK 1.4 is also

supported.

2. Set an environment variable called JAVA_HOME to point to your JDK directory.

3.2. Jikes 1.22 or Jikes 1.21

Jikes is a Java compiler by IBM that is much faster than the original one provided by the JDK.

1. Download and unzip Jikes 1.22 [http://www-124.ibm.com/developerworks/oss/jikes]. If using JDK

1.4 you have to use Jikes 1.21 instead.

2. Set an environment variable called JIKES_HOME to point to your Jikes directory.

3. Add JIKES_HOME\bin to your PATH environment variable.

3.3. Ant 1.6.5

1. Download and unzip the latest version of Ant [http://ant.apache.org/].

2. Set an environment variable called ANT_HOME to point to your Ant directory.

3. Add ANT_HOME\bin to your PATH environment variable.

3.4. Subversion or a Similar Version Control System

We recommend that you put all your code and configuration files into a version control system.

Subversion is free and open source and can be used through a set of commands, by installing a

subversion client such as SmartSVN [http://www.smartsvn.com/], TortoiseSVN [http://tortoisesvn.net/]

or through the integration mechanisms provided by most IDEs.

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Difference Between Portlet Development vs Servlet Development

Developing a Java Portlet is similar to the process of developing a Servlet based web applications. The

main differences are:

• The portlet only produces a fragment of the final HTML and not the full markup. The portal will join

the fragments of several portlets and will create the full page returned to the user.

• The class receiving the requests has to inherit from javax.portlet.Portlet instead of

javax.servlet.http.HttpServlet.

• A portlet request may involve a two phase process:

1. On each request at most one portlet will be able to perform an state-changing operation. This is

referred to as the Action phase and is implemented through a method called processAction.

Not always an action phase is needed. Requests that involved an action phase are invoked to an

URL known as an ActionURL, while those that only have a render phase are invoked through a

RenderURL.

2. Next is the render phase where all other portlets related to the page that is going to be returned may

be called in any order to produce the HTML fragment to draw themselves. Portlet implement this

functionality through a method called render.

• Existing web application development frameworks such as Struts, JSF, Webworks, etc can be used

through the use of Bridges. Other existing frameworks have been adapted to be usable directly

without the need of a bridge. An example is the Spring Portlet MVC framework.

A portlet container is a server side software component that is capable of running portlets. A portal is a

web application that includes a portlet container and may offer additional services to the user. Liferay

Portal includes its own portlet container and offers lots of functionalities such as user and organization

administration, creation of virtual communities, having pages based on portlet layouts, graphical

selection of portlets and drag&drop to place them, grouping pages into websites, several bundled

ready-to-use portlets, and much more.

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How to Defining a new theme

Before digging into these folders, the next step is to register the theme in Liferay. Edit the file

liferay-look-and-feel.xml present in the WEB-INF directory and add the following XML

fragment:

<theme id="my-theme" name="My theme">

<root-path>/html/themes/my-theme</root-path>

<templates-path>/html/themes/my-theme/templates</templates-path>

<images-path>/html/themes/my-theme/images</images-path>

<template-extension >jsp</template-extension>

<settings>

<setting key="my-setting" value="example-value"/>

</settings>

<color-scheme id="gen-color" name="DarkBlue">

<![CDATA[

-- Content omitted for clarity --

]]>

</color-scheme>

</theme>

The root-path element must point to the root theme folder. The elements templates-path

contains the path to the JSP templates, and images-path points to the subfolder that contains the

images for this theme. Note that you can choose any subdirectory name you want or point to

subdirectories in other directories. However, it is recommended that you keep the default

convention unless you have a good reason to change it.

The template-extension element specifies the language in which the templates of the theme are

written. JSPs and velocity (specifying vm as the template extension) are supported. Liferay

comes with examples of both. In this article we will assume JSP templates, but they are very

_

Page 5 of 11 Created by Jorge Ferrer

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What is portlet Content and Portlet Template

Portlet Content: the internal area that shows the meat of the portal.

 Portlet Template: the external area and can be customized for each theme.

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Liferay Interview Question and Answers

what can you do with a theme?

A theme can control the whole look and feel of the pages generated by Liferay. The portal-side

of the page can be completely customized. Even the appearance of the portlets that come with

Liferay can be customized using CSS, images, JavaScripts, and special templates.

Liferay Interview Question and Answers

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Blog Tips for SEO

Blogs are the current rage, and many webmasters have blogs but fail to use their blog to it's full potential. Blogs provide a steady stream of fresh content, and if this content is written and managed properly, blogs have the ability to increase a website's ranking in the search engines. 

1. Host Your Own Blog In order to prosper from a blog, be sure to host it on your own domain. Hosting the blog on your own server will maximize the links to your website. Link popularity is one of the factors search engines use to rank websites. Resist the urge to use free hosting services, do not give away your link popularity!

2. RSS FeedsAll blogs should have an RSS feed. An RSS feed will allow for your blog posts to be easily syndicated. The syndication will result in links back to your blog from RSS directories or others who display the feed. Blog entries should be available via an RSS feed. Website visitors who subscribe to the feed will receive notification when new blog posts are added. If the title is of interest, they will click through to your website. This gives subscribers an easy way to know when a blog has been updated.

3. Use White Space Be sure to make your content scannable. Few website visitors actually read blog posts; most web visitors simply scan a blog entry to determine its relevance or point. With that in mind, the blog posts should be displayed in short paragraphs. Overly long posts should be segmented into concise paragraphs or broken into bulleted lists to make scanning easier. Avoid the urge to "clutter" the post. 

4. Titles Matter You only have seconds to grab the attention of scanners browsing your blog. Use keywords and catchy titles to draw readers in. Blog post titles can be bolded for emphasis and white space should be used to buffer the content. 

5. Grammar Matters

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Implemented New Domain

Hi users successfully implemented new domain for our blog www.amditechnology.com

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Fresher WalkIn

Experience required for the Job: 0 - 4 years

Annual Salary of the Job: 0.0 - 3.0 Lacs

Job Location: Bengaluru/Bangalore

Dear Candidate,

Hewlett Packard - Fresher"s & Experienced Walk-in @ Bangalore

Hi,

Greetings from Hewlett Packard!!

Job Title: Technical Support Representative.
Process: Imaging and Printing Group/Personal Systems Group.
Experience: Fresher"s & Experienced (0 to 4 yrs)

Job Description:

Technical Support -Engineer Voice based- 17th October, 2011,( Monday)

 Troubleshooting operating system, hardware and network related queries of our global customers Over Phone which involves working in different time zones.
 Troubleshooting of laptops and desktops etc of HP customers (internal)
 Take calls from Global customers and initiate the right response to them, positively and professionally
 Deal with a wide range of products using a powerful information database
 Provide remote solutions to problems, probe problems and explain the solution in such a way that non-technical users understand

Eligibility: Graduate in any discipline, Experience: 0 - 3 years of work experience
* Excellent communications and technical skills is a must.
What we have for you!
You can look forward to a fulfilling and enriching career with HP. At HP, we encourage employees (after a minimum of 18 months in the current roles) to explore career opportunities across different business units, customer segments and functional roles within HP itself.





WALK-IN SESSION:17th October, 2011,( Monday)


Venue:
'LAKSHYA' Towers
5th Floor, #16(old No. 309/2),
OPP: P.M.R Hall, 5th Block,
K H B Colony, KORAMANGALA
BANGALORE - 560034
Phone Number: 080 40981841


Registration:

09:00 AM to 1:00 PM.



Please ensure that you carry the documents mentioned below for this Walk-in-Interviews:

Mandatory Documents:
* Photo copies of 10th , 12th marks card if undergraduate and all the degree marks cards if graduate.
* Resume (Ensure that your Full Name is on it)
* 2 copies of recent passport sized photographs
* Proof of date of birth
* Degree Certificate/ Provisional Degree Certificate(original)
* Photo ID (Passport, Driving license, Election ID Card)
* Offer letter/Revised offer letter/Pay slips/ Experience letter (in case of experienced candidates)


Thanks & regards,
HR-Staffing Team (Hewlett Packard India Pvt Ltd)

Note :
1) Candidate should be willing to work in rotational shift

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Apple to bring lower priced iPad

To compete with Amazon's cheap Kindle Fire proposition, Apple is expected to unveil a lower priced iPad in the first few months of 2012 

 

 Apple is expected to introduce a smaller, lower-priced, variant of its iPad in early 2012 to compete with Amazon's cheap Kindle Fire proposition, says one US-based analyst.
The news came via a story published on BGR, according to a report by You Know Mobile.
‘Our research is pointing to the unveiling of a lower priced iPad in the first few months of 2012 that is aimed at expanding the company’s market potential by tapping into a more price sensitive consumer segment," said Ticonderoga Securities analyst Brian White in a media statement.
‘Essentially, this ‘iPad mini’ will also fend off the recently announced Amazon Kindle Fire that addresses the low-end tablet market with a $199 price tag but could lead to bigger tablet ambitions from the online retailer in the future," he added .
According to White, this lower priced iPad could be priced in the mid-to-high-$200 range. Also, according to the report, White has also claimed that a more premium-grade iPad tablet will land in 2012 as well.
More on Apple to bring lower priced iPad
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