Missing jboss.jdbc-driver.org_postgresql_Driver - jboss7.x

Question

I'm trying to configure a Postgres datasource in standalone.xml. I've put the driver jar in the right place "jboss-as-7.2.0.Final\modules\org\postgresql\main" and this is my "standalone.xml":
<datasource jta="true" jndi-name="java:jboss/datasources/ProcessEngine" pool-name="ProcessEngine" enabled="true" use-java-context="true" use-ccm="true">
<connection-url>jdbc:postgresql://localhost:5432/camunda_process_engine</connection-url>
<driver-class>org.postgresql.Driver</driver-class>
<driver>postgresql</driver>
<security>
<user-name>postgres</user-name>
<password>postgres</password>
</security>
</datasource>
<drivers>
</driver>
<driver name="postgresql" module="org.postgresql">
<xa-datasource-class>org.postgresql.xa.PGXADataSource</xa-datasource-class>
</driver>
</drivers>
...
"jboss-as-7.2.0.Final\modules\org\postgresql\main\module.xml"
<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.0" name="org.postgresql">
<resources>
<resource-root path="postgresql-9.3-1102.jdbc41.jar"/>
</resources>
<dependencies>
<module name="javax.api"/>
<module name="javax.transaction.api"/>
</dependencies>
</module>
I'm trying to start server but it shows errors.
JBAS014775: New missing/unsatisfied dependencies:
service jboss.jdbc-driver.org_postgresql_Driver (missing) dependents: [service jboss.driver-demander.java:jboss/datasources/ProcessEngine, service jboss.data-source.java:jboss/datasources/ProcessEngine]

Answer 1

You also have to add a dependency on your new module to your application. The easiest way to do this is to add a jboss-deployment-structure.xml to the META-INF of your Ear, or if you just have a war, put it in WEB-INF.
<?xml version="1.0"?>
<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<deployment>
<dependencies>
<module name="org.postgresql" />
</dependencies>
</deployment>
</jboss-deployment-structure>
When you redeploy, JBoss will know to put your new custom module in the classpath. Decent guide to classloading in AS7 here.