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| <h1>FAQ</h1> |
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| <div id="preamble"> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>== |
| General</p> |
| </div> |
| <div class="literalblock"> |
| <div class="content"> |
| <pre> </pre> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_what_spec_version_does_openejb_support">What spec version does OpenEJB support?</h3> |
| <div class="paragraph"> |
| <p>OpenEJB supports the Enterprise JavaBeans 3.0 specification and previous |
| versions 2.1, 2.0 and 1.1.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_i_don_t_plan_to_use_ejbs_so_why_would_i_embed_openejb_into_tomcat">I don’t plan to use EJBs, so why would I embed OpenEJB into Tomcat.</h3> |
| <div class="paragraph"> |
| <p>Adding OpenEJB to Tomcat gives servlets several new Java EE 5 |
| capabilities such as JPA, JAX-WS, JMS, J2EE Connectors, transactions, |
| and more as well as enhancing the injection features of Tomcat 6 to now |
| support injection of JavaEE objects like Topics, Queues, EntityManagers, |
| JMS ConnectionFactories, JavaMail Sessions, as well as simpler data |
| types such as Dates, Classes, URI, URL, List, Map, Set, Properties, and |
| more. In the case of Tomcat 5.5 which doesn’t support dependency |
| injection at all, even more is gained.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_can_i_run_openejb_with_a_jvm_for_any_vendor">Can I run OpenEJB with a JVM for any vendor?</h3> |
| <div class="paragraph"> |
| <p>The Sun, Mac, and IBM vms are regularly tested, however any vm should |
| work.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_which_version_of_java_is_required_to_run_openejb">Which version of Java is required to run OpenEJB?</h3> |
| <div class="paragraph"> |
| <p>Java versions 5 or 6, aka Java 1.5 or 1.6.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_do_i_need_apache_maven_to_work_with_openejb">Do I need Apache Maven to work with OpenEJB?</h3> |
| <div class="paragraph"> |
| <p>Definitely not. Most of the examples include both Maven and Ant build |
| files. OpenEJB is usable as a plain library, much like an embedded |
| database like Derby, so it is usable in any application regardless if |
| that application is run via Maven, Ant, Intellij, Eclipse, NetBeans, |
| JUnit, TestNG, etc.</p> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_can_i_start_and_stop_openejb_from_an_ide_if_yes_which_ide_is">Can I start and stop OpenEJB from an IDE? If yes, which IDE is</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>supported by OpenEJB?</p> |
| </div> |
| <div class="paragraph"> |
| <p>The short answer is yes. The basic approach for all embedding scenarios |
| is to 1) add OpenEJB to your classpath, and 2) construct your |
| InitialContext using |
| org.apache.openejb.client.LocalInitialContextFactory. The |
| LocalInitialContextFactory will boot OpenEJB in your vm and all ejb |
| applications visible in the classpath will be deployed. See |
| <a href="http://tomee.apache.org/embedding-openejb.html" class="bare">http://tomee.apache.org/embedding-openejb.html</a> for details on how to |
| embed openejb in your application and IDE. See |
| openejbx30:application-discovery-via-the-classpath.html[Application |
| discovery via the classpath] for various ways to have your applications |
| discovered.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_during_embedded_testing_how_can_i_externalize_all_my_datasource">During embedded testing, how can I externalize all my DataSource</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>configuration?</p> |
| </div> |
| <div class="paragraph"> |
| <p>Create an openejb.xml file in any directory that gets added to your test |
| classpath. For maven, something that winds up directly under |
| "target/classes/" or "target/test-classes/" will work just fine. Then in |
| your test case do this:</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-java" data-lang="java"> protected void setUp() throws Exception { |
| Properties properties = new Properties(); |
| properties.setProperty(Context.INITIAL_CONTEXT_FACTORY,</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>"org.apache.openejb.client.LocalInitialContextFactory");</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-properties" data-lang="properties"> URL config =</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>this.getClass().getClassLoader().getResource("openejb.xml"); |
| properties.setProperty("openejb.configuration", |
| config.toExternalForm());</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlight"><code class="language-java" data-lang="java"> initialContext = new InitialContext(properties); |
| }</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>The file itself doesn’t have to be called "openejb.xml", you could have |
| a few different files like that for different testing scenarios each |
| with a name that describes the basic setup.</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="_container_managed_persistence">Container-Managed Persistence</h2> |
| <div class="sectionbody"> |
| <div class="sect2"> |
| <h3 id="_what_engine_does_openejb_use_for_cmp">What engine does OpenEJB use for CMP?</h3> |
| <div class="paragraph"> |
| <p>The CMP engine is written as a layer over JPA with OpenJPA doing the |
| persistence work.</p> |
| </div> |
| </div> |
| <div class="sect2"> |
| <h3 id="_what_is_the_format_for_the_cmp_mapping_files">What is the format for the CMP mapping files?</h3> |
| <div class="paragraph"> |
| <p>The standard JPA mapping file and annotations are also used for CMP |
| mappings.</p> |
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