Title: Injection of EntityManager Example
<a name="InjectionofEntityManagerExample-Overview"></a>
# Overview

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<object width="400" height="250"><param name="movie"
value="http://www.youtube.com/v/s4uiIoAehgQ?fs=1&amp;hl=en_US&amp;rel=0"></param><param
name="allowFullScreen" value="true"></param><param name="allowscriptaccess"
value="always"></param><embed
src="http://www.youtube.com/v/s4uiIoAehgQ?fs=1&amp;hl=en_US&amp;rel=0"
type="application/x-shockwave-flash" allowscriptaccess="always"
allowfullscreen="true" width="400" height="250"></embed></object>

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Shows use of *@PersistenceContext* to have an *EntityManager* with an
*EXTENDED* persistence context injected into a @Stateful bean.	An EJB 3
*@Entity* bean is used with the EntityManager to create, persist and merge
data to a database.

If you need to use a TRANSACTION persistence context, see [this example](testing-transactions-example.html)
.

_The source for this example is in the "injection-of-entitymanager"
directory located in the [openejb-examples.zip](openejb:download.html)
 available on the download page._

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<a name="InjectionofEntityManagerExample-TheCode"></a>
# The Code

<a name="InjectionofEntityManagerExample-TheStatefulbean"></a>
## The Stateful bean
{snippet:id=code|url=openejb3/examples/injection-of-entitymanager/src/main/java/org/superbiz/injection/jpa/MoviesImpl.java|lang=java}

<a name="InjectionofEntityManagerExample-TheEntitybean"></a>
## The Entity bean
{snippet:id=code|url=openejb3/examples/injection-of-entitymanager/src/main/java/org/superbiz/injection/jpa/Movie.java|lang=java}

<a name="InjectionofEntityManagerExample-Thepersistenceunit"></a>
## The persistence unit

{snippet:id=code|url=openejb3/examples/injection-of-entitymanager/src/main/resources/META-INF/persistence.xml|lang=xml}

<a name="InjectionofEntityManagerExample-Writingaunittestfortheexample"></a>
# Writing a unit test for the example

{snippet:id=code|url=openejb3/examples/injection-of-entitymanager/src/test/java/org/superbiz/injection/jpa/MoviesTest.java|lang=java}

Curious on the InitialContext parameters used?	See the [Injection of DataSource Example](injection-of-datasource-example.html)
 for an explanation of how any Resource can be configured via properties in
the TestCase itself or via an openejb.xml file.

<a name="InjectionofEntityManagerExample-Running"></a>
#  Running

Running the example is fairly simple.  In the "injection-of-entitymanager"
directory of the [examples zip](openejb:download.html)
, 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