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| <h2 title="Class Extensions" class="title">Class Extensions</h2> |
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| <pre>public final class <span class="typeNameLabel">Extensions</span> |
| extends java.lang.Object</pre> |
| <div class="block">The Extensions API mimics the equivalent CDI Extension/@Observes API |
| |
| Via the Extensions/@Obverves API it is possible to listen for any number of |
| internal events fired by OpenEJB/TomEE during the life of the server and |
| deployment of applications. |
| |
| Extensions are any java class that have one or more @Observes methods using the following format: |
| |
| - public void <any-name>(@Observes <any-type> event) |
| |
| Extensions can be registered in any number of ways: |
| |
| 1. Via a META-INF/org.apache.openejb.extension text file containing the name of exactly one |
| 2. Via a <Service> tag in the server's openejb.xml or tomee.xml configuration file |
| 3. Via a <Service> tag in a META-INF/resources.xml in the application |
| 4. Directly calling SystemInstance#addObserver(Object)</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../org/apache/openejb/observer/ObserverManager.html" title="class in org.apache.openejb.observer"><code>ObserverManager</code></a>, |
| <a href="../../../org/apache/openejb/observer/Observes.html" title="annotation in org.apache.openejb.observer"><code>Observes</code></a>, |
| <a href="../../../org/apache/openejb/loader/SystemInstance.html#fireEvent-E-"><code>SystemInstance.fireEvent(Object)</code></a>, |
| <a href="../../../org/apache/openejb/loader/SystemInstance.html#addObserver-java.lang.Object-"><code>SystemInstance.addObserver(Object)</code></a></dd> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/openejb/Extensions.Finder.html" title="class in org.apache.openejb">Extensions.Finder</a></span></code> </td> |
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| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/openejb/Extensions.html#addExtensions-java.lang.ClassLoader-java.util.Collection-">addExtensions</a></span>(java.lang.ClassLoader loader, |
| java.util.Collection<java.lang.String> classes)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/openejb/Extensions.html#addExtensions-java.util.Collection-">addExtensions</a></span>(java.util.Collection<java.lang.Class<?>> classes)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static java.util.Collection<java.lang.Class<?>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/openejb/Extensions.html#findExtensions-org.apache.openejb.Extensions.Finder-">findExtensions</a></span>(<a href="../../../org/apache/openejb/Extensions.Finder.html" title="class in org.apache.openejb">Extensions.Finder</a> finder)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/openejb/Extensions.html#installExtensions-org.apache.openejb.Extensions.Finder-">installExtensions</a></span>(<a href="../../../org/apache/openejb/Extensions.Finder.html" title="class in org.apache.openejb">Extensions.Finder</a> finder)</code> </td> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
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| <h4>findExtensions</h4> |
| <pre>public static java.util.Collection<java.lang.Class<?>> findExtensions(<a href="../../../org/apache/openejb/Extensions.Finder.html" title="class in org.apache.openejb">Extensions.Finder</a> finder)</pre> |
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| <h4>installExtensions</h4> |
| <pre>public static void installExtensions(<a href="../../../org/apache/openejb/Extensions.Finder.html" title="class in org.apache.openejb">Extensions.Finder</a> finder)</pre> |
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| <pre>public static void addExtensions(java.lang.ClassLoader loader, |
| java.util.Collection<java.lang.String> classes)</pre> |
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| <pre>public static void addExtensions(java.util.Collection<java.lang.Class<?>> classes)</pre> |
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