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| <h1>Injection of env-entry Example |
| |
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| |
| <p><a name="Injectionofenv-entryExample-Overview"></a></p> |
| |
| <h1>Overview</h1> |
| |
| <p>The EJB 3.0 spec added Dependency Injection as a main feature. The |
| <em>@Resource</em> annotation can be used to inject several things including |
| EntityManagers, DataSources, Topics, Queues, etc. Most of these are |
| container supplied objects. It is possible, however, to supply your own |
| values to be injected via an <em><env-entry></em> in your ejb-jar.xml deployment |
| descriptor. EJB 3.0 supported env-entry types are limited to the |
| following:</p> |
| |
| <ul> |
| <li>java.lang.String</li> |
| <li>java.lang.Integer</li> |
| <li>java.lang.Short</li> |
| <li>java.lang.Float</li> |
| <li>java.lang.Double</li> |
| <li>java.lang.Byte</li> |
| <li>java.lang.Character</li> |
| <li>java.lang.Boolean</li> |
| </ul> |
| |
| <p>It should be noted that OpenEJB does not restrict you to just these data |
| types and allows for anything convertible from a String to be injected |
| provided there is a java.beans.PropertyEditor installed to handle the type |
| you want. Additionally, a plain properties file packed in your META-INF |
| directory can be used to supply the injected values instead of using the |
| ejb-jar.xml. See the <a href="custom-injection.html">Custom Injection</a> |
| example for details.</p> |
| |
| <p><em>The source for this example is the "injection-of-env-entry" directory |
| located in the <a href="openejb:download.html">openejb-examples.zip</a> |
| available on the <a href="http://tomee.apache.org/downloads.html">download page</a>.</em></p> |
| |
| <p><a name="Injectionofenv-entryExample-TheCode"></a></p> |
| |
| <h1>The Code</h1> |
| |
| <p><a name="Injectionofenv-entryExample-AnnotatedBeanClass"></a></p> |
| |
| <h2>Annotated Bean Class</h2> |
| |
| <p><div class="snippet">:id=code|url=openejb3/examples/injection-of-env-entry/src/main/java/org/superbiz/injection/InvoiceBean.java|lang=java}</p> |
| |
| <p>The use of the <em>@Resource</em> annotation isn't limited to setters. For |
| example, this annotation could have been used on the corresponding <em>field</em> |
| like so:</p> |
| |
| <pre><code>@Resource |
| private int maxLineItems; |
| </code></pre> |
| |
| <p><a name="Injectionofenv-entryExample-ejb-jar.xml"></a></p> |
| |
| <h2>ejb-jar.xml</h2> |
| |
| <p><div class="snippet">:id=code|url=openejb3/examples/injection-of-env-entry/src/main/resources/META-INF/ejb-jar.xml|lang=xml}</p> |
| |
| <p><a name="Injectionofenv-entryExample-TestCase"></a></p> |
| |
| <h1>Test Case</h1> |
| |
| <p><div class="snippet">:id=code|url=openejb3/examples/injection-of-env-entry/src/test/java/org/superbiz/injection/InvoiceBeanTest.java|lang=java}</p> |
| |
| <p><a name="Injectionofenv-entryExample-Runningit"></a></p> |
| |
| <h1>Running it</h1> |
| |
| <p>Running the example is fairly simple. In the "injection-of-env-entry" |
| directory of the <a href="openejb:download.html">examples zip</a> |
| , just run:</p> |
| |
| <blockquote> |
| <p>$ mvn clean install</p> |
| </blockquote> |
| |
| <p>Which should create output like the following.</p> |
| |
| <pre><code>------------------------------------------------------- |
| T E S T S |
| ------------------------------------------------------- |
| Running org.superbiz.injection.PurchaseOrderBeanTest |
| Apache OpenEJB 3.0 build: 20080408-04:13 |
| http://tomee.apache.org/ |
| INFO - openejb.home = |
| </code></pre> |
| |
| <p>/Users/dblevins/work/openejb-3.0/examples/injection-of-env-entry |
| INFO - openejb.base = |
| /Users/dblevins/work/openejb-3.0/examples/injection-of-env-entry |
| 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=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-env-entry/target/classes |
| INFO - Configuring app: |
| /Users/dblevins/work/openejb-3.0/examples/injection-of-env-entry/target/classes |
| INFO - Configuring Service(id=Default Stateful Container, type=Container, |
| provider-id=Default Stateful Container) |
| INFO - Auto-creating a container for bean InvoiceBean: |
| Container(type=STATEFUL, id=Default Stateful Container) |
| INFO - Loaded Module: |
| /Users/dblevins/work/openejb-3.0/examples/injection-of-env-entry/target/classes |
| INFO - Assembling app: |
| /Users/dblevins/work/openejb-3.0/examples/injection-of-env-entry/target/classes |
| INFO - Jndi(name=InvoiceBeanRemote) --> Ejb(deployment-id=InvoiceBean) |
| INFO - Jndi(name=PurchaseOrderBeanRemote) --> |
| Ejb(deployment-id=PurchaseOrderBean) |
| INFO - Created Ejb(deployment-id=InvoiceBean, ejb-name=InvoiceBean, |
| container=Default Stateful Container) |
| INFO - Created Ejb(deployment-id=PurchaseOrderBean, |
| ejb-name=PurchaseOrderBean, container=Default Stateful Container) |
| INFO - Deployed |
| Application(path=/Users/dblevins/work/openejb-3.0/examples/injection-of-env-entry/target/classes) |
| Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.331 sec |
| Running org.superbiz.injection.InvoiceBeanTest |
| Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.068 sec</p> |
| |
| <pre><code>Results : |
| |
| Tests run: 4, Failures: 0, Errors: 0, Skipped: 0 |
| </code></pre> |
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