EJB3 DEployment descriptor

[mohsin.wk khan]

How to deploy EJB 3 Statlessbean on the Jboss Server.........

[Mihai Radulescu]

Hi

You create a ear jar and you explode it in your jboss/server/default/deploy/YourApplication.

If you use eclipse then you can let the eclipse to do the deploy for you. Netbeans can also deploy (but I don't know if it supports JBoss).
See the http://www.jboss.org/community/wiki/ExplodedDeployment

Regards,
Mihai

[Peter Johnson]

Another possibility is to package your EJB in a JAR file and copy the JAR file to the server/xxx/deploy directory.

[Omar Al Kababji]

I suppose that you are using Eclipse:

1. Create an EJB3 project
2. Write an ANT file that will compile your EJB classes and deploy them to JBoss

	<target name="create-ejb-jar">
		<mkdir dir="./build" />
		<delete file="./build/EJB-Jar.jar" />

		<jar destfile="build/EJB-Jar.jar">
			<fileset dir="path-to-classes"/>
			<metainf file=".path-to-persistence.xml"/>
		</jar>
	</target>

for the persistence.xml file you should provide something like this:

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
	xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">

	<persistence-unit name="UnitName">
		<jta-data-source>java:/DataSourceName</jta-data-source>
	</persistence-unit>

</persistence>

finally you need a Data Source to connect to the Database, you could find most Database data sources under the directories of JBoss for JBoss 5 its under you will find them under the directory <JBoss>/docs/examples/jca

choose the appropriate data source for you database and modify it.

[V Sahdev]

I doubt Stateless bean need persistence.xml

[Mihai Radulescu]

Hi, Sahdev

You are right you can build an ear (and deploy it) without to have a persistence.xml, but this will be atypical.
An classical enterprise application has 4 layers and one is the persistence layer (and this one requires the persistence.xml). I can not imagine a real situation when you build a enterprise application only with stateless beans.

Regards,
Mihai

[Omar Al Kababji]

Yes you are both right you don't need persistence.xml if your EJB jar will contain only session beans, its needed only if you want to use JPA. but I supposed that since its EJB3 it would need JPA sooner or later.