PiJava

ORA-00600: internal error code, arguments: [kdsgrp1], [], [], [], [], [], [], []

pijava — Thu, 04 Nov 2010 07:04:38 +0000

Solution :
Analyze table and index by using these scripts

analyze [table] validate structure cascade;

analyze [index] validate structure;

if the analyze had failed drop index or table and recreate them.

java.lang.LinkageError: Class javax/xml/namespace/QName violates loader constraints: definition mismatch between parent and child loaders

pijava — Fri, 04 Dec 2009 09:58:09 +0000

Reason:
QName.class exists in both j2ee.jar and some jar that was added to the project. A definition mismatch occurs when classloader load these QName classes.

Solution:
Remove QName.class file from the jars that you add to the project. (ie. stax-api-1.0.1.jar, xml-apis-1.3.04.jar)

Spring Webservice Soap Request/Response Logging with log4j

pijava — Fri, 04 Dec 2009 09:09:04 +0000

Add following lines to log4j.xml

Javascript Email Validation (Regular Expression)

pijava — Mon, 04 May 2009 14:20:42 +0000

function isValidEmail(email)
{
  var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;

  if(!filter.test(email))
    return false;
  return true;
}

Using jQuery with RichFaces

pijava — Mon, 04 May 2009 12:35:56 +0000

RichFaces includes jQuery JavaScript framework. You can use the futures of jQuery directly without defining the component on a page if it is convenient for you. To start using the jQuery feature on the page, include the library into a page with the following code:

In order to test jQuery on your page

Add the following to the :

 Link

Add the following to the page:

Remember to use jQuery() function instead of $()

then just click the “Link”

WARNING: Unable to find required classes (javax.activation.DataHandler and javax.mail.internet.MimeMultipart). Attachment support is disabled.

pijava — Mon, 04 May 2009 10:33:25 +0000

Solution:

1. download activation.jar http://java.sun.com/javase/technologies/desktop/javabeans/jaf/downloads/index.html

2. download mail.jar http://java.sun.com/products/javamail/downloads/index.html

3. add these two jar’s to the project

Changing port number in JBoss

pijava — Thu, 30 Apr 2009 14:29:29 +0000

JBoss Version : 4.2.0.GA

JBoss is running on port number 8080 as default. If you want to change the port number of your JBoss (jBoss 4)

1. Open JBoss Home/server/default/deploy/jboss-web.deployer folder
*if JBoss is running under “minimal” or “all” mode, open JBoss Home/server/mode/deploy/jboss-web.deployer

2. Open server.xml file in this folder

3. Find tag

4. Change 8080 port, with any port you want to use
* ie.

5. Restart JBoss

Adding users and roles to Tomcat

pijava — Thu, 30 Apr 2009 12:57:53 +0000

Apache Tomcat Version : 6.0.18

Open the tomcat-users.xml, located in your Tomcat Home/conf folder.

To add a role :

To add a user :

To asign multiple roles to a user :

tomcat-users.xml