Create UUID using ajax call

Below code represents, How to create UUID using  Liferay API with AJAX call :

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Critics' Choice Award - 2014

Guys, this is important to know about BEST CMS frameworks which can be better judge from critics' choice CMS survey and award. So here you can see major big players who are playing good role in specific categories . 2014 Critics' Choice CMS Award Winners These award winners were selected by a panel of judges. To learn more about how the awards work, visit "How the Awards Work"

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Liferay Certification

Friends,

This post specially created to solve your queries related to Liferay Certification.
Put your query and comment here to resolve your queries and questions and community or blog members will reply with answer as per their expertise on Liferay.

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Know about Google Sites

Friends,

Do you know about Google Sites ? No !!!! guys this is awesome product by Google which provides you facility to create your own sites free of cost where you can use 100 MB size and can launch your mid size sites.
Visit https://sites.google.com for more details and create your own site using your Gmail credentials.
Its manage site section is also good  from where you can easily manage your sites and redirect to your own domain as well.

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Liferay 7 Features

Hello Folks,

I know its bit early to list all the new features coming up in Liferay 7 but I catered some of the information when i was surfing Liferay community.
Liferay 7 comes up with some cool new features which I will be listing over here.

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Liferay 6.2 Certified Professional

Hello Members,

Recently Liferay Launched "Liferay 6.2 Certified Professional Developer" which is really good and will help everybody to get hands through with Liferay 6.2 new features.
So what are you waiting for ?? Be ready to fix new badge in your profile for certification.

You can get more detail about certification announcement on https://www.liferay.com/web/jeffrey.handa/blog/-/blogs/liferay-6-2-certified-professional-developer-now-available.

Syllabus : http://www.liferay.com/services/certification/professional-developer/6.2

Cheers, 

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www.liferaysolution.com feedback

Hello Friends,

We have completed around more than 2 years with www.liferaysolution.com and sharing many useful Liferay solutions and important information about liferay development as well as other useful stuff.
I am sure your valuable inputs/feedback will help us to provide more better way to provide solutions and support on liferay.

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Escape HTML using JSTL

Hello Friends,

If you are using JSTL to display HTML data in your application then you can escape HTML 2 ways in JSTL:

1) Using <c:out> tag

<c:out value="${specialCharString or HTML}" escapeXml="true"/>

2) Using EL Function

${fn:escapeXml("<i> This is jignesh vachhani")} 

Hope this will be useful somewhere.

If you want to use Liferay API then you can simply use

HTMLUtil.escape(String HTMLString)

Show/Display HTML tag in jsp

${fn:escapeXml(fn:replace(fn:replace(fn:replace("<div><p>This is jignesh testing</p></div>",'"','&quot;'),'<','&lt;'),'>','&gt;'))}

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Live Websites Developed Using Liferay Portal

http://www.westbengaltourism.gov.in
http://new-twinspace.etwinning.net
http://mapman.gabipd.org
https://earth.esa.int
http://itec.eun.org
https://careers.total.com
http://www.scientix.eu
http://www.punjabgovt.gov.in
https://www.tune2big.com

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Find Duplicate Records MySQL Query

Hi All

I know that this is not related Liferay but i came across this useful thing during my development where you can find duplicate record from table and can delete if you need.

SELECT tablename.name FROM tablename
INNER JOIN (SELECT name FROM tablename
GROUP BY name HAVING count(name) > 1) dup_record ON tablename.name = dup_record.name

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Read Files From Folder

Hi All,

You can use below code to read files from specific folders :

import java.io.File;

public class Test {

    /**

     * @param args

     */  

public static void listFilesForFolder(File folder) {

        

        for (File fileEntry : folder.listFiles()) {

            if (fileEntry.isDirectory()) {

                listFilesForFolder(fileEntry);

            } else {

                

                System.out.println(fileEntry.getName());

            }

        }

        System.out.println("Total :" +folder.listFiles().length);

    }

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Malicious code vulnerability - Java Programming

Malicious code vulnerability - Field is a mutable array

Malicious code vulnerability - Field is a mutable Hashtable

Malicious code vulnerability - Field isn't final and can't be protected from malicious code

Malicious code vulnerability - Field isn't final but should be

Malicious code vulnerability - Field should be both final and package protected

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Performance - Java Programming

Performance - Could be refactored into a named static inner class

Performance - Could be refactored into a static inner class

Performance - Explicit garbage collection; extremely dubious except in benchmarking code

Performance - Huge string constants is duplicated across multiple class files

Performance - Inefficient use of keySet iterator instead of entrySet iterator

Performance - Maps and sets of URLs can be performance hogs

Performance - Method allocates a boxed primitive just to call toString

Performance - Method allocates an object, only to get the class object

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Avoid - Java Programming

Avoid Array Loops

Avoid Assert As Identifier

Avoid Calling Finalize

Avoid Catching NPE

Avoid Catching Throwable

Avoid Decimal Literals In Big Decimal Constructor

Avoid Duplicate Literals

Avoid Enum As Identifier

Avoid Instanceof Checks In Catch Clause

Avoid Print Stack Trace

Avoid Rethrowing Exception

Avoid Throwing Null Pointer Exception

Avoid Throwing Raw Exception Types

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Bad practice - Java Programming

Bad practice - Abstract class defines covariant compareTo() method

Bad practice - Abstract class defines covariant equals() method

Bad practice - Certain swing methods needs to be invoked in Swing thread

Bad practice - Check for sign of bitwise operation

Bad practice - Class defines clone() but doesn't implement Cloneable

Bad practice - Class defines compareTo(...) and uses Object.equals()

Bad practice - Class defines equals() and uses Object.hashCode()

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OOP Principles For The Java Designer

Here are some useful information which should be familiar with all the java programmers/designers :

1. DRY

DRY stands for Don’t Repeat Yourself, which is pretty self explanatory. This means that you shouldn’t be duplicating your code in a program. If a code fragment is appearing in two places, then you would do well to turn it into a method instead of writing the entire fragment again. Lack of duplication helps in easy maintenance of the code.

2. Encapsulation

Whether your project gets bought over or whether you work on it yourself, your code will always change. So, it is good to encapsulate the part of the code that you think will be changed. This makes you code easy to maintain and test.

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Portlet Configuration Menu Customization

If you want to modify menus which comes under portlet configuration wrench icon  then you may see below details.
Actually for each icons, its using cutome tags which is given below so you can add/modify this items here as per your requirement.

<liferay-ui:icon-menu

 align="auto"

 cssClass="portlet-options"

 direction="down"

 extended="<%= false %>"

 icon=""

 message="options"

 showArrow="<%= false %>"

 showWhenSingleIcon="<%= true %>"

>

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JVM Structure & YourKit Tool

As a java programmer, we should have at least basic knowledge of JVM and how it stores values.

The JVM memory consists of the following segments,

• Heap Memory :  Storage for Java objects
• Non-Heap Memory : Used by Java to store loaded classes and other meta-data
• Other :  JVM internal structures, loaded profiler agent code and data, etc.

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Why AngularJS

Here we have some useful information regarding AngularJS :

1) MVC Implemetation
2) User Friendly Interface

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Using Portlet Session in Liferay

Here is the sample example using login form that explains how to use PortletSession in liferay. In general PortletSession has default scope limited to Portlet which can be extended to APPLICATION_SCOPE by changing property.

Let us understand it using Login example.

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Tabs Creation in Liferay

Here we are going to create multiple tabs where we can render JSP pages dynamically. Tabs can be created multiple way which are given below:

1: Using Liferay UI taglib:

Put below code in JSP file :

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Custom Portlet Modes

Hi All,

If you are thinking to create own custom portlet mode with liferay and want to show in configuration wrench button, then its not OOB available with Liferay and cannot achieve using simply configuration.
Liferay supports below modes :

  about
  config
  edit
  editDefaults
  editGuest
  help
  preview
  print
  view

But below tag is making bit confusion whether it's support of custom mode or not. So this is used for Liferay custom modes(editDefault,editGuest etc.) only. 

  <custom-portlet-mode>


      <portlet-mode>edit_guest</portlet-mode>

      <portal-managed>true</portal-managed>

  </custom-portlet-mode>

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Build Application Using Liferay

Hello Everybody,

We knows that what and all can be build using Liferay framework but if I am a customer and I want to use Liferay as a platform to build my application so how it will benefits to them to select Liferay.
Please provide your inputs here :

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500 free programming ebooks

001. The Design Patterns Java Companion

       James W. Cooper |
       Published in 1998, 218 pages

002. Thinking in Enterprise Java
       Bruce Eckel et. al. | MindView, Inc.
       Published in 2003

003. The Ugly JavaScript Book
       John H. Keyes |
       Published in 2001

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Maxvalue validation for textarea using AlloyUI - IE

You might be aware that maxlength attribute of textarea doesn't work for IE8 & IE9. If you still want to restrict the length then you can use below code using alloyUI :

A.one(document).delegate(['keypress','change'],function(e){

var maxLength = this.attr('maxlength');

  if(this.val().length > maxLength) {

   this.val(this.val().substring(0, maxLength));

   e.preventDefault();

}

}, '#<portlet:namespace/>description');

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Current Openings with CIGNEX Datamatics

We are looking for talent to fill the following positions at our Bangalore and Ahmedabad centers.

Positions Overall Experience  (in Years) Relevant ExperienceMinimum (in Years)    Java Developers / Lead 5-10 J2EE, Struts, spring MVC, EJB, JSF,   REST Webservices/SOAP UI is essential    Liferay Developer/ Lead 3-10 Spring MVC, Liferay, JSR, Javascript, Jquery, Components, Spring, CMIS, Web-Services, REST,

If your profile matches then send your CV on jignesh.vachhani@cignex.com

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E-Commerce App by Liferay

It's great to hear from Liferay

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Custom Comparator in Java

import java.util.Arrays;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;



/**

 * @author Jignesh Vachhani

 *

 */

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CI best practices by Manuel de la Peña

Guys ,

Have you read below articles written by Manuel de la Peña ?
It's really awesome and we must have to follow all the steps which has been given over here for our daily programming life.

•  Continuous Integration Best practices: #1 Don't check-in on a broken build
•  Continuous Integration Best practices: #2 Always run the tests
•  Continuous Integration Best practices: #3 Wait for commit tests to pass
•  Continuous Integration Best practices: #4 Never go home on a broken build
•  Continuous Integration Best practices: #5 Be prepared to revert
•  Continuous Integration Best practices: #6 Time-Box fixing before reverting
•  Continuous Integration Best practices: #7 Don't Comment out failing tests

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Google Guava

Hi Friends,

I know many of you are familiar with this word but someone is very new just like me.
I search this stuff in google and found that its really amazing and can be useful in our programming life.

So first question will come to your mind that what is "Google Guava" ?
So basically "Google Guava" is nothing but its utilities for working with java collection.

To start work with Gauva, you need to have java 1.6 or higher version installed in your machine.

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