java:comp/env in JBoss EAP 6 / 7

Issue

• In older version the comp/env used to work, how do I setup java:comp/env/jdbc/ExampleDS for my application to use the datasource java:jboss/datasources/ExampleDS defined in the JBoss EAP 6 standalone.xml ?

• While migrating to JBoss EAP 6.2 the application fails when trying to use a datasource.
  The logfile of the application shows then the following error:

16:50:31,858 ERROR [dbRequest] (pool-4-thread-1) javax.naming.NameNotFoundException: java:comp/env
at org.jboss.as.naming.InitialContext.findContext(InitialContext.java:198)
at org.jboss.as.naming.InitialContext.lookup(InitialContext.java:118)
at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:183)
at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:179)
at javax.naming.InitialContext.lookup(InitialContext.java:411)
.
.

• So below are some questions:
  • a) if java:comp/env is still available, why I get a NameNotFoundException when I use Context context = (Context)initialContext.lookup("java:comp/env");?
    Do I have to change something in the standalone.xml?
  • b) if java:comp/env isn't supported any longer, where can I find an official statement, that it isn't any longer?