Introduction to datasources

One of the most important features an application ever has, is the ability to save its state to a database.

JBoss EAP 7 supports this ability with the concept of a datasource, which is the place you configure connectivity settings. Furthermore, JBoss supports your environment even more, by providing an in- memory database for development purposes, named H2 database.

JBoss EAP 7 has a dedicated subsystem to configure datasources. By default, the ExampleDS is configured and bound to the H2 database by its driver, as follows:

<subsystem xmlns="urn:jboss:domain:datasources:4.0"> 
    <datasources> 
        <datasource jndi-name="java:jboss/datasources/ExampleDS"
         pool-name="ExampleDS" enabled="true" 
         use-java-context="true"> 
            <connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=
             -1;DB_CLOSE_ON_EXIT=FALSE</connection-url> 
            <driver>h2</driver> ...