Developing EJBs - Revision history

217.232.58.9 at 00:41, 17 December 2004

2004-12-17T00:41:03Z

← Older revision		Revision as of 00:41, 17 December 2004
Line 126:		Line 126:
	''Note:'' With XDoclet you can avoid writing deployment descriptors again and again.		''Note:'' With XDoclet you can avoid writing deployment descriptors again and again.
	===Packaging===		===Packaging===
	As with normal Java applications, the compiled sources have to packaged.		As with normal Java applications, the compiled sources have to be packaged.
	In J2EE there are three main types of archives:		In J2EE there are three main types of archives:
	* JARs: Java-Archive - contains libraries, clients, beans, …		* JARs: Java-Archive - contains libraries, clients, beans, …

JanHegewald at 21:05, 22 November 2004

2004-11-22T21:05:42Z

← Older revision		Revision as of 21:05, 22 November 2004
Line 5:		Line 5:
	Jan Hegewald		Jan Hegewald

	The original presentation can be downloaded here. [[Image:Developing_EJBs.pdf\|Developing EJBs]]		The original presentation can be downloaded here: [[Image:Developing_EJBs.pdf\|Developing EJBs]]
	----		----

Line 146:		Line 146:
	* JBoss AS 4.0		* JBoss AS 4.0
	* MySQL 4.1 - although I used MySQL you should be able to run the application with any database without having to configure anything.		* MySQL 4.1 - although I used MySQL you should be able to run the application with any database without having to configure anything.

			The sample application can be downloaded here: http://www.informatik.hu-berlin.de/~hegewald/docs.html

JanHegewald at 21:01, 22 November 2004

2004-11-22T21:01:41Z

← Older revision		Revision as of 21:01, 22 November 2004
Line 4:		Line 4:

	Jan Hegewald		Jan Hegewald

			The original presentation can be downloaded here. [[Image:Developing_EJBs.pdf\|Developing EJBs]]
	----		----

JanHegewald at 20:59, 22 November 2004

2004-11-22T20:59:53Z

← Older revision		Revision as of 20:59, 22 November 2004
Line 2:		Line 2:

	''An introduction to the development cycle of Enterprise Java Beans''		''An introduction to the development cycle of Enterprise Java Beans''

		⚫	Jan Hegewald
	----		----

Line 133:		Line 135:
	* Sun J2EE Application Verification Kit: This application can be used to verify your application regarding conformance to J2EE specification. It can only be used together with the Sun Java System Application Server. Available at: http://java.sun.com/j2ee/verified/avk_enterprise.html		* Sun J2EE Application Verification Kit: This application can be used to verify your application regarding conformance to J2EE specification. It can only be used together with the Sun Java System Application Server. Available at: http://java.sun.com/j2ee/verified/avk_enterprise.html
	* UML2EJB: This tool takes an UML-model from a case tool and generates EJBs with the appropriate XDoclet-Tags (model driven development). It is no longer developed, but possibly interesting anyway: http://sourceforge.net/projects/uml2ejb/ ''Note:'' If you use JDeveloper you do not need it, since JDeveloper does all this for you.		* UML2EJB: This tool takes an UML-model from a case tool and generates EJBs with the appropriate XDoclet-Tags (model driven development). It is no longer developed, but possibly interesting anyway: http://sourceforge.net/projects/uml2ejb/ ''Note:'' If you use JDeveloper you do not need it, since JDeveloper does all this for you.



	==Sample application==		==Sample application==
			The sample application consist of three beans, one of each type: one entity bean ''BookBean'', one session bean ''BookShopBean'' and one message-driven bean ''BookWatcherBean''. Some JSP-pages serve as the beans client.

			The application was developed in the following environment:
⚫	Jan Hegewald
			* Eclipse 3.0 with JBoss IDE with XDoclet
			* JBoss AS 4.0
			* MySQL 4.1 - although I used MySQL you should be able to run the application with any database without having to configure anything.

JanHegewald at 20:22, 22 November 2004

2004-11-22T20:22:35Z

@@ Line 24: / Line 24: @@
 * Sun Java System Application Server (http://java.sun.com/j2ee/)
-The Sun Java System Application Server is important, because since it comes from Sun, it is the reference implementation of J2EE. Furthermore, at present it is the only available server supporting JSF.
+The Sun Java System Application Server is important, because since it comes from Sun, it is the reference implementation of J2EE. Furthermore, at present it is the only available server supporting JSF. Despite this it is not Open Source Software. It can be bought from Sun or used freely in the Platform Edition.
 ==Deployment and Packaging==
 ==Useful tools==
 ==Sample application==

JanHegewald at 18:57, 22 November 2004

2004-11-22T18:57:10Z

New page

'''Developing EJBs'''

''An introduction to the development cycle of Enterprise Java Beans''
----

==Abstract==
As with every software development process, one has to consider many aspects of the development cycle before starting. The following text is intended to give an overview of the aspects to consider especially when developing Enterprise Java Beans.

For setting up the software development environment, firstly a J2EE-Server has to be choosen. The second thing to find is an appropriate IDE which simplifies the development process as much as possible and allows the programmer to focus on implementing business logic instead of writing and modifying interfaces and deployment descriptors over and over. In the best case this IDE also integrates the packaging process. To further simplify the development other tools should be evaluated. This text aims to present an overview of available tools regarding each of these points. Finally, a sample application is developed to demonstrate how much work an IDE can do for the programmer.

==Choosing a J2EE-Server==
Today there are many J2EE-Servers available, both commercial and free products. A collection of the most common can be found below:

===Commercial Products===
* BEA Weblogic (http://www.bea.com/products/weblogic/server/index.shtml)
* IBM Websphere (http://www-306.ibm.com/software/webservers/appserv/was/)
* Oracle Application Server (http://www.oracle.com/appserver/index.html)
* Borland Enterprise Server (http://www.borland.com/bes/appserver/)
* SAP Web Application Server (http://www11.sap.com/germany/solutions/netweaver/webappserver/index.aspx)

===Free / Open Source Products===
* JBoss (http://www.jboss.org/products/jbossas)
* JOnAS (http://jonas.objectweb.org/)
* Sun Java System Application Server (http://java.sun.com/j2ee/)

The Sun Java System Application Server is important, because since it comes from Sun, it is the reference implementation of J2EE. Furthermore, at present it is the only available server supporting JSF.

==IDEs for the development of EJBs==

==Deployment and Packaging==

==Useful tools==

==Sample application==

Jan Hegewald