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| <h1>Spring |
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| <p><div class="note">} |
| This document and the related feature is considered a prototype and will |
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| |
| <p><a name="Spring-Introduction"></a></p> |
| |
| <h1>Introduction</h1> |
| |
| <p>The OpenEJB Spring integration makes all Spring defined beans injectable to |
| Java EE components, and all Java EE components can be injected to Spring beans. |
| The injection system supports arbitrarily complex nesting (e.g., Spring |
| bean injected into a Java EE component, which is then injected into another |
| Spring bean), including:</p> |
| |
| <ul> |
| <li>@Resouce injection of any Spring bean into EJB</li> |
| <li>Injection of any Java EE resource into a Spring bean, including: |
| <em>* EJB 3.0 beans |
| <em></em> EJB 3.1 Singleton Bean |
| <em></em> JDBC Connector |
| <em></em> JMS Connector |
| <em></em> JMS Queue and Topic |
| *</em> Generic Java EE Connector (JCA)</li> |
| </ul> |
| |
| <p>In addition, the OpenEJB Spring integration add support for discovery and |
| deployment of standard Java EE packages within a Spring context, including:</p> |
| |
| <ul> |
| <li>EAR</li> |
| <li>EJB Jar</li> |
| <li>Persistence Unit</li> |
| <li>RAR </li> |
| </ul> |
| |
| <p><em>Requirements:</em> |
| * OpenEJB 3.1+ |
| * Spring X.X |
| * Java 1.5 or 1.6</p> |
| |
| <p><a name="Spring-SpringBeans"></a></p> |
| |
| <h1>Spring Beans</h1> |
| |
| <p>The following beans are usable in any spring xml file.</p> |
| |
| <table> |
| <tr><th> Class </th><th> Description </th></tr> |
| <tr><td> org.apache.openejb.spring.ClassPathApplication </td><td> Scrapes the classpath |
| for all EJB, RAR, and Persistence applications, deploys them, and imports |
| them into the current ApplicationContext. All applications found are |
| treated as one big EAR unless the _classpathAsEar_ property is set to |
| _false_ </td></tr> |
| <tr><td> org.apache.openejb.spring.Application </td><td> Scrapes an individual jar file |
| for EJB, RAR, and Persistence applications, deploys them, and imports them |
| into the current ApplicationContext. The 'jarFile' property is required. |
| The application is treated as it's own self-contained EAR, separate from |
| other uses of 'Application' </td></tr> |
| <tr><td> org.apache.openejb.spring.Resource </td><td> Allows an OpenEJB <Resource> to be |
| declared in the Spring ApplicationContext </td></tr> |
| <tr><td> org.apache.openejb.spring.OpenEJBResource </td><td> A FactoryBean that imports a |
| Resource from OpenEJB into the Spring ApplicationContext. Has the |
| following properties: _type_ such as javax.sql.DataSource, and |
| _resourceId_. In the future this bean will not be required and all OpenEJB |
| Resources will automatically be imported into the Spring ApplicationContext |
| </td></tr> |
| <tr><td> org.apache.openejb.spring.BmpContainer </td><td> Allows an OpenEJB BMP |
| <Container> to be declared in the Spring ApplicationContext. Has the |
| following properties: _poolSize_ </td></tr> |
| <tr><td> org.apache.openejb.spring.CmpContainer </td><td> Allows an OpenEJB CMP |
| <Container> to be declared in the Spring ApplicationContext. </td></tr> |
| <tr><td> org.apache.openejb.spring.SingletonContainer </td><td> Allows an OpenEJB |
| Singleton <Container> to be declared in the Spring ApplicationContext. Has |
| the following properties: _accessTimeout_ </td></tr> |
| <tr><td> org.apache.openejb.spring.StatefulContainer </td><td> Allows an OpenEJB Stateful |
| <Container> to be declared in the Spring ApplicationContext. Has the |
| following properties: _timeOut_</td></tr> |
| <tr><td> org.apache.openejb.spring.StatelessContainer </td><td> Allows an OpenEJB Stateful |
| <Container> to be declared in the Spring ApplicationContext. Has the |
| following properties: _timeOut_, _poolSize_, and _strictPooling_ </td></tr> |
| <tr><td> org.apache.openejb.spring.MdbContainer </td><td> Allows an OpenEJB Message-Driven |
| <Container> to be declared in the Spring ApplicationContext. Has the |
| following properties: _resourceAdapter_, _messageListenerInterface_, |
| _activationSpecClass_, and _instanceLimit_ </td></tr> |
| <tr><td> org.apache.openejb.spring.EJB </td><td> A FactoryBean that imports an EJB from |
| OpenEJB into the Spring ApplicationContext. One of these is automatically |
| created for each interface of each EJB, but explicit use can be nice if you |
| desire to import an EJB with a specific name. Has the following |
| properties: _deploymentId_, _interface_ </td></tr> |
| </table> |
| |
| <p><a name="Spring-Examples"></a></p> |
| |
| <h1>Examples</h1> |
| |
| <p>See the <a href="spring-ejb-and-jpa.html">Spring EJB and JPA</a> |
| page for example code and a working Spring xml file.</p> |
| |
| <p><a name="Spring-{anchor:problems}Problems?"></a></p> |
| |
| <h1>{anchor:problems} Problems?</h1> |
| |
| <p>If you are having problems with the installation, please send a message to |
| the OpenEJB users <a href="mailing-lists.html">mailing list</a> |
| containing any error message(s) and the following information:</p> |
| |
| <ul> |
| <li>OpenEJB Version</li> |
| <li>Spring Version</li> |
| <li>Java Version (execute java -version)</li> |
| <li>Operating System Type and Version</li> |
| </ul> |
| |
| <p><a name="Spring-Limitations"></a></p> |
| |
| <h1>Limitations</h1> |
| |
| <p><em>JavaAgent</em> - OpenEJB uses OpenJPA to provide JPA and CMP persistence, and |
| OpenJPA currently requires a JavaAgent to function properly in a Java 1.5 |
| environment. OpenJPA does not require a JavaAgent in Java 1.6. Use |
| Hibernate as your the provider in your persistence.xml files if you wish to |
| avoid this requirement.</p> |
| |
| <p><em>EntityManager</em> - Having an OpenEJB created EntityManager or |
| EntityManagerFactory injected into Spring beans is currently not supported. |
| This will be added to the next release. A small workaround for this is to |
| use an EJB as a factory by adding a 'getEntityManager' method an using it |
| as a <a href="http://static.springframework.org/spring/docs/2.5.x/reference/beans.html#beans-factory-class-instance-factory-method">Spring instance factory method</a> |
| .</p> |
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