Java EE 6 Collocated Model

EJB 3.1 provides subset of EJB. This subset is known as EJBLite. EJBLite is available as a part of Java EE6 Web Container. You can create local EJBs with and without interface view. 

EJB 3.1 The benefit is when Web component and EJB component need to access the object for business processing, no marshaling is required. If an EJB makes changes in the object state , web component can view the changes. 

The local EJBs can be packaged in a WAR file. This is called as Collocated model of Java EE 6.

NB7.3.1 and GF4.0 --- How to Get JavaDB Work?

I installed NetBeans 7.3.1 with GlassFish 4.0 on Windows 7 platform. Wrote web Application and as I try deploying , it gave two problems.

1. I could not start Java DB(Derby Database). I had previous install at a different location, that was one reason. Java DB start option was disabled.
Fix :

• In NetBeans IDE
• Select the Services Window -> databse
• Expand the Database Node
• Select Java DB, click RMB (Right Mouse Button) and select Properties
• Specify the folder where Java DB is installed (GlassFish install location\javadb) and Click OK
• Java DB server will start now

2.  GlassFish Server did not start, error message "GlassFish Server 4.0 cannot start port is occupied" was displayed in error dialog box.

Fix:

• To check for busy ports
• Open Command window Start -> Run -> cmd
• At the command prompt 
• netstat -aon
• it showed port 8080 busy

• In NetBeans IDE Services Window
• Expand Server Node
• Select GlassFish Server, Click RMB and select Properties
• Look for the Domain Folder

•  Note down the path of Domain folder
• In windows explorer fo to the folder specified in the Domains Folder
• domains folder will have domains1\config which has domain.xml file
• open C:\glassfish-4.0\glassfish\domains\domain1\config\domain.xml file in an editor
• search for 8080 and replace it with desired port

• Save the edited file
•  Currently present GlassFish server in NetBeans is configured to listen on port 8080
• Remove this server from NetBeans
• Select the GlassFish Server in NetBeans Services window, click RMB and select Remove

• To add newly configured Server
• Select Servers node in Services window
• Click RMB and select Add Server
• In Choose Server Window, select GlassFish Server and click Next Button
• In Server Location Window, click browse button and select GlassFish installation directory, in this case it is C:\glassfish-4.0 and click Next Button
• In Domain Location Window, accept the default values and click Finish
• GlassFish server has been added to netBeans with newly configured port to listen
• Start the Server... Enjoy !!!
• Its Up and Running :)

Posted @ 6:19 pm 12/12/2013