I use a method that works well for hibernate.
1) put the hibernate configuration properties in a xml file (call it hibernate.cfg.xml but it's not mandatory)
this is an example:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.hbm2ddl.auto">create-drop</property>
<property name="hibernate.show_sql">false</property>
<property name="hibernate.search.default.directory_provider">ram</property>
</session-factory>
</hibernate-configuration>
you can put there only hibernate properties that do not start with hibernate.ejb
2) Create a jboss module. It's very simple. Suppose you want to call the module com.myorganization.config than create a directory structure in the modules
folder of you server installation: /com/myorganization/config/main. In the main folder put the hibernate.cfg.xml file and the following module.xml
file:
<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.1" name="com.myorganization.config">
<resources>
<resource-root path="."/>
</resources>
</module>
3) In your persistence.xml adding the following property:
<property name="hibernate.ejb.cfgfile" value="/hibernate.cfg.xml" />
4) Finally, in the META-INF/MANIFEST.MF file add the following line:
Dependencies: com.myorganization.config
If you like maven use the maven-war-plugin in order to change the MANIFEST.MF:
<configuration>
<archive>
<manifestEntries>
<Dependencies>com.myorganization.config</Dependencies>
</manifestEntries>
</archive>
</configuration>
That's all.