The Jboss Seam Application

JBoss Seam is a well known lightweight framework for Java EE 5.0 that sits on top

of Java EE 5.0 frameworks in order to get on with programming models for enterprise web applications and also to drive business process applications. Java EE 5.0 web applications contains both EJB3 modules for business logic and JSF modules for the web front end.Though EJB3 and JSF move together, their design platform is completely different as EJB3 uses annotations to configure services while JSF caters to XML files. But both are not related on the framework levels.

JBoss Seam is prepared to treat multi-user applications, and e-commerce applications. This rules out writing vigorous state management code. this offers fine plain HTTP session and one can enjoy the multiple "conversations" with web requests as well as business method calls.

The JBossAS7 OpenShift Express cartridge can be run on a constrained environment and this somehow puts a check on what ports can be used as well as how much memory, and the number of processes the user can run. The current restrains that are set are the constraints on the Java memory at 128Mb of max heap, and 83Mb of permgen. This makes sure that your applications need to mould itself in that restriction model.

Moreover the express user running the application targets 100 processes, which translates to a max of 80 or so java threads. Therefore the maximum number of thread creation can eat up available processes and result in java.lang along with the OutOfMemoryErrors with a failure to create native thread cause.

One could follow the steps like this:

wget http://download.jboss.org/jbossas/7.0/jboss-as-7.0.0.Final/jboss-as-web-7.0.0.Final.zip

unzip jboss-as-web-7.0.0.Final.zip

Download this documents attachments

unzip standalone.xml.zip to get standalone.xml

cp standalone.xml jboss-as-web-7.0.0.Final/standalone/configuration

unzip standalone.conf.zip to get standalone.conf

cp standalone.conf jboss-as-web-7.0.0.Final/bin

tar -xvf mysql.tar -C jboss-as-web-7.0.0.Final

However coming back to the JBoss Seam, when it comes to coding, you will need to cater to entity beans like Java Persistence API (JPA, a.k.a, EJB3 persistence) or Hibernate POJOs. Also you will need to take care of the JSF web pages that help in user input and display data results. The final thing kept in mind is the EJB3 session beans or annotated Seam POJOs that acts as the UI event tacklers for JSF web pages. These components mentioned are handled by Seam automatically.

The Seam can parse the form field as well as create entity beans. There is an event handler that manages the entity bean and one does not need to bother about the management of the component life cycles in the code. You can easily jump start your own Seam project and can do this by using sample applications to get hands on knowledge.

Any application, whether it is based on JBoss or any other system, needs performance analysis to ensure how good it is working. Performance analysis is a crucial thing and that allows you to measure the efficiency of any platform. Different types of solutions are available to test performance of JBoss based platforms. You have to look for a performance measurement solution to ensure efficiency of your JBoss application.

by: Daniel

POST COMMENT

How To Become An Application Specialist Overview On Us Green Card Through Marriage Application Rainwater Harvesting For Commercial Applications Marine Diesel Engine Applications Appoint An Expert Immigration Lawyer For Processing Your Visa Application! Mobile Phone Application Development / Smart Phone Application Development Advantages Of Android Application Development Mobile Application Development: Productivity Catalyst For The Mobile Market Examples Of Typical Applications Of Raman Spectroscopy Mobile Application Use Combination Ladders For A Variety Of Applications Affordable Android Application Development By Outsource Android Development Company Professional Android Application Developer Available For Hiring At Affordable Price