JBoss Drools Rule

JBoss Drools is a open source project provids unified and integrated solution for Business rule , Business process Management , work flow and event processing. JBoss Drools project is organised into multiple sub-projects which consist of Rules API , runtime engine , event processing engine , work flow /business process and rule authering web framework with testing tools.

Drools sub-projects are named as follows.

• Drools Guvnor(BRMS)
• Drools Expert (rule engine)
• Drools flow (business process and workflow)
• Drools fusion(Even processing / temporal resoning)
• Drools planner(Automated planing).

Learn more at jboss drools web site http://www.jboss.org/drools/

 

content-manage-thread

http://www.javaworld.com/javaworld/jw-01-2007/jw-01-workmgr.html

http://grepcode.com/file/repo1.maven.org/maven2/org.mule/mule-core/3.0.0-M2-20091130/org/mule/work/MuleWorkManager.java

http://kickjava.com/src/net/sf/mybatchfwk/BatchService.java.htm

url-mainframe integration

http://www.theserverside.com/news/1363665/SOA-and-the-Mainframe-Two-Worlds-Collide-and-Integrate

Introduction to Apache camel integration frame work

Apache Camel is an open source Java framework that focuses on making integration easier and more accessible to developers.

It implements many of the widely used EIPs (enterprise integration patters) and provides connectivity to a great variety of transports (http,ftp,mail etc.,) and APIs easy to use Domain Specific Language (DSL) to wire EIPs and transports together.

It doesn't require a container and can be run in any Java-based environment.

Camel can also be used for BAM (Business Activity Monitoring). Rather than using RouteBuilder, you can use ActivityBuilder to listen for activities and create event notifications.

High level camel architecture :

Components, Endpoints, Processors, and the Domain Specific Language (DSL) are the main core integral partos of camel.

Components are the extension point in Camel to add connectivity to other systems. The core of Camel is very small to keep dependencies low, promote embeddability, etc. and as a result contains only 12 essential components. There are over 60 components outside the core. To expose these systems to the rest of Camel, Components provide an Endpoint interface. By using URIs, you can send or receive messages on Endpoints in a uniform way. For instance, to receive messages from a JMS queue aQueue and send them to a file system directory "c:/tmp", you could use URIs like "jms:aQueue" and "file:c:\tmp".


Processors are used to manipulate and mediate messages in between Endpoints. All of the EIPs are defined as Processors or sets of Processors. As of, Camel supports more  40 patterns from the EIP book, 6 other integration patterns, and many other useful Processors.


To wire Processors and Endpoints together, Camel defines a Java DSL. The term DSL is used a bit loosely here as it usually implies the involvement of a compiler or interpreter that can process keywords specific to a particular domain. In Camel, DSL means a fluent Java API that contains methods named like terms from the EIP book

Camel-spring integration - event listeners

http://spring-java-ee.blogspot.com/2010/01/advanced-event-notification-framework.html

Install jboss App server in Ubuntu

Add new user :

jey@jey-laptop:~$ sudo useradd -d /usr/local/jboss -s /bin/sh jboss
[sudo] password for jey:

jey@jey-laptop:~$ sudo passwd jboss
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully

ubuntu shortcut url

https://help.ubuntu.com/community/KeyboardShortcuts
https://help.ubuntu.com/community/PartitioningSchemes

Change the default OS in grub using Ubuntu 9.10

How to change the default OS to windows.(Whenever a new version of Ubuntu is installed, the bootloader will always point to Ubuntu itself.
You switch on the computer and come across with number of weird options in GRUB starting with Ubuntu, memtest, something else and last option is reserved for windows.
Here is how you can change the default OS to windows:
1. Login to Ubuntu
2. open the terminal => Alt+F2 => type gnome-terminal
3. at the prompt,type
sudo gedit /etc/default/grub
4. The system will ask for an admin password as you are trying to make changes to one of the important files
5. in the editor, search for the parameter GRUB_DEFAULT, It will be set to 0(for Ubuntu) by default
6. change the value to 2,3,4 (wherever the option of windows is indexed at in the GRUB). Typically, it is 4 in a dual boot.
7. save the file
8. you will return back to the terminal

9. type in
sudo update-grub
This will regenerate the file /boot/grub/grub.cfg

You are done. The next time you see the GRUB, the default pointer will be at windows OS.

Installing Inter wirelss drive to ubuntu

In order to install Intel wireless driver to Ubuntu , you need to do the following steps.


your module is part of compat-wireless. So you will have to try to compile compat-wireless on your system. This way you'll get newest iwlagn module.

1. You have to get compat-wireless snapshot from the latest dated tarball in the compat-wireless-2.6 download directory. or

a. http://wireless.kernel.org/en/users/Download - section "Where to download bleeding edge"

2. Install package build-essential
3. Unpack driver using command: tar -jxvf compat-wireless-2.6.tar.bz2
4. enter newly created directory and type:
./scripts/driver-select iwlwifi
if no errors then type: make
if no errors then type: sudo make install
just to be certain: sudo depmod -a
5. reboot