Overview
Shows use of @Resource to have an EntityManager with an EXTENDED persistence context injected into a Stateful. An EJB 3 @Entity bean is with the EntityManager to create, persist and merge data to a database.
The source for this example is in the "injection-of-entitymanager" directory located in the openejb-examples.zip available on the download page.
The Code
The Stateful bean
Error formatting macro: snippet: java.lang.NullPointerException
The Entity bean
Error formatting macro: snippet: java.lang.NullPointerException
The persistence unit
Error formatting macro: snippet: java.lang.NullPointerException
Writing a unit test for the example
Error formatting macro: snippet: java.lang.NullPointerException
Running
Running the example is fairly simple. In the "injection-of-entitymanager" directory of the examples zip, just run:
$ mvn clean install
Which should create output like the following.
------------------------------------------------------- T E S T S ------------------------------------------------------- Running org.superbiz.injection.jpa.MoviesTest Apache OpenEJB 3.0 build: 20080408-04:13 http://openejb.apache.org/ INFO - openejb.home = /Users/dblevins/work/openejb-3.0/examples/injection-of-entitymanager INFO - openejb.base = /Users/dblevins/work/openejb-3.0/examples/injection-of-entitymanager INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service) INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager) INFO - Configuring Service(id=movieDatabaseUnmanaged, type=Resource, provider-id=Default JDBC Database) INFO - Configuring Service(id=movieDatabase, type=Resource, provider-id=Default JDBC Database) INFO - Configuring Service(id=Default JDK 1.3 ProxyFactory, type=ProxyFactory, provider-id=Default JDK 1.3 ProxyFactory) INFO - Found EjbModule in classpath: /Users/dblevins/work/openejb-3.0/examples/injection-of-entitymanager/target/classes INFO - Configuring app: /Users/dblevins/work/openejb-3.0/examples/injection-of-entitymanager/target/classes INFO - Configuring Service(id=Default Stateful Container, type=Container, provider-id=Default Stateful Container) INFO - Auto-creating a container for bean Movies: Container(type=STATEFUL, id=Default Stateful Container) INFO - Configuring PersistenceUnit(name=movie-unit) INFO - Loaded Module: /Users/dblevins/work/openejb-3.0/examples/injection-of-entitymanager/target/classes INFO - Assembling app: /Users/dblevins/work/openejb-3.0/examples/injection-of-entitymanager/target/classes INFO - PersistenceUnit(name=movie-unit, provider=org.apache.openjpa.persistence.PersistenceProviderImpl) ERROR - JAVA AGENT NOT INSTALLED. The JPA Persistence Provider requested installation of a ClassFileTransformer which requires a JavaAgent. See http://openejb.apache.org/3.0/javaagent.html INFO - Jndi(name=MoviesLocal) --> Ejb(deployment-id=Movies) INFO - Created Ejb(deployment-id=Movies, ejb-name=Movies, container=Default Stateful Container) INFO - Deployed Application(path=/Users/dblevins/work/openejb-3.0/examples/injection-of-entitymanager/target/classes) Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.095 sec Results : Tests run: 1, Failures: 0, Errors: 0, Skipped: 0