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| <div class="subTitle">org.apache.cayenne.event</div> |
| <h2 title="Interface EventManager" class="title">Interface EventManager</h2> |
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| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../org/apache/cayenne/event/DefaultEventManager.html" title="class in org.apache.cayenne.event">DefaultEventManager</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public interface <span class="strong">EventManager</span></pre> |
| <div class="block">This class acts as bridge between an Object that wants to inform others about its |
| current state or a change thereof (Publisher) and a list of objects interested in the |
| Subject (Listeners).</div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>3.1 before 3.1 this was a concrete class.</dd></dl> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
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| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#addListener(java.lang.Object,%20java.lang.String,%20java.lang.Class,%20org.apache.cayenne.event.EventSubject)">addListener</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> eventParameterClass, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code> |
| <div class="block">Register an <code>EventListener</code> for events sent by any sender.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#addListener(java.lang.Object,%20java.lang.String,%20java.lang.Class,%20org.apache.cayenne.event.EventSubject,%20java.lang.Object)">addListener</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> eventParameterClass, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> sender)</code> |
| <div class="block">Register an <code>EventListener</code> for events sent by a specific sender.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#addNonBlockingListener(java.lang.Object,%20java.lang.String,%20java.lang.Class,%20org.apache.cayenne.event.EventSubject)">addNonBlockingListener</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> eventParameterClass, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#addNonBlockingListener(java.lang.Object,%20java.lang.String,%20java.lang.Class,%20org.apache.cayenne.event.EventSubject,%20java.lang.Object)">addNonBlockingListener</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> eventParameterClass, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> sender)</code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#isSingleThreaded()">isSingleThreaded</a></strong>()</code> |
| <div class="block">Returns true if this EventManager is single-threaded.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#postEvent(java.util.EventObject,%20org.apache.cayenne.event.EventSubject)">postEvent</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/EventObject.html?is-external=true" title="class or interface in java.util">EventObject</a> event, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code> |
| <div class="block">Sends an event to all registered objects about a particular subject.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#postNonBlockingEvent(java.util.EventObject,%20org.apache.cayenne.event.EventSubject)">postNonBlockingEvent</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/EventObject.html?is-external=true" title="class or interface in java.util">EventObject</a> event, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code> |
| <div class="block">Sends an event to all registered objects about a particular subject.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#removeAllListeners(org.apache.cayenne.event.EventSubject)">removeAllListeners</a></strong>(<a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code> |
| <div class="block">Removes all listeners for a given subject.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#removeListener(java.lang.Object)">removeListener</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener)</code> |
| <div class="block">Unregister the specified listener from all event subjects handled by this manager |
| instance.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#removeListener(java.lang.Object,%20org.apache.cayenne.event.EventSubject)">removeListener</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code> |
| <div class="block">Unregister the specified listener for the events about the given subject.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/cayenne/event/EventManager.html#removeListener(java.lang.Object,%20org.apache.cayenne.event.EventSubject,%20java.lang.Object)">removeListener</a></strong>(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> sender)</code> |
| <div class="block">Unregister the specified listener for the events about the given subject and the |
| given sender.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method_detail"> |
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| </a> |
| <h3>Method Detail</h3> |
| <a name="isSingleThreaded()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isSingleThreaded</h4> |
| <pre>boolean isSingleThreaded()</pre> |
| <div class="block">Returns true if this EventManager is single-threaded. If so it will throw an |
| exception on any attempt to register an unblocking listener or dispatch a |
| non-blocking event.</div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>1.2</dd></dl> |
| </li> |
| </ul> |
| <a name="addListener(java.lang.Object, java.lang.String, java.lang.Class, org.apache.cayenne.event.EventSubject)"> |
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| <h4>addListener</h4> |
| <pre>void addListener(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> eventParameterClass, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</pre> |
| <div class="block">Register an <code>EventListener</code> for events sent by any sender.</div> |
| <dl><dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a></code> - if <code>methodName</code> is not found.</dd></dl> |
| </li> |
| </ul> |
| <a name="addNonBlockingListener(java.lang.Object, java.lang.String, java.lang.Class, org.apache.cayenne.event.EventSubject)"> |
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| <li class="blockList"> |
| <h4>addNonBlockingListener</h4> |
| <pre>void addNonBlockingListener(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> eventParameterClass, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</pre> |
| </li> |
| </ul> |
| <a name="addListener(java.lang.Object, java.lang.String, java.lang.Class, org.apache.cayenne.event.EventSubject, java.lang.Object)"> |
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| <h4>addListener</h4> |
| <pre>void addListener(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> eventParameterClass, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> sender)</pre> |
| <div class="block">Register an <code>EventListener</code> for events sent by a specific sender.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>listener</code> - the object to be notified about events</dd><dd><code>methodName</code> - the name of the listener method to be invoked</dd><dd><code>eventParameterClass</code> - the class of the single event argument passed to |
| <code>methodName</code></dd><dd><code>subject</code> - the event subject that the listener is interested in</dd><dd><code>sender</code> - the object whose events the listener is interested in; |
| <code>null</code> means 'any sender'.</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a></code> - if <code>methodName</code> is not found</dd></dl> |
| </li> |
| </ul> |
| <a name="addNonBlockingListener(java.lang.Object, java.lang.String, java.lang.Class, org.apache.cayenne.event.EventSubject, java.lang.Object)"> |
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| <h4>addNonBlockingListener</h4> |
| <pre>void addNonBlockingListener(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> eventParameterClass, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> sender)</pre> |
| </li> |
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| <a name="removeListener(java.lang.Object)"> |
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| <h4>removeListener</h4> |
| <pre>boolean removeListener(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener)</pre> |
| <div class="block">Unregister the specified listener from all event subjects handled by this manager |
| instance.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>listener</code> - the object to be unregistered</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>true</code> if <code>listener</code> could be removed for any |
| existing subjects, else returns <code>false</code>.</dd></dl> |
| </li> |
| </ul> |
| <a name="removeAllListeners(org.apache.cayenne.event.EventSubject)"> |
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| </a> |
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| <h4>removeAllListeners</h4> |
| <pre>boolean removeAllListeners(<a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</pre> |
| <div class="block">Removes all listeners for a given subject.</div> |
| </li> |
| </ul> |
| <a name="removeListener(java.lang.Object, org.apache.cayenne.event.EventSubject)"> |
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| <h4>removeListener</h4> |
| <pre>boolean removeListener(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</pre> |
| <div class="block">Unregister the specified listener for the events about the given subject.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>listener</code> - the object to be unregistered</dd><dd><code>subject</code> - the subject from which the listener is to be unregistered</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>true</code> if <code>listener</code> could be removed for the given |
| subject, else returns <code>false</code>.</dd></dl> |
| </li> |
| </ul> |
| <a name="removeListener(java.lang.Object, org.apache.cayenne.event.EventSubject, java.lang.Object)"> |
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| <h4>removeListener</h4> |
| <pre>boolean removeListener(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> listener, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> sender)</pre> |
| <div class="block">Unregister the specified listener for the events about the given subject and the |
| given sender.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>listener</code> - the object to be unregistered</dd><dd><code>subject</code> - the subject from which the listener is to be unregistered</dd><dd><code>sender</code> - the object whose events the listener was interested in; |
| <code>null</code> means 'any sender'.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd><code>true</code> if <code>listener</code> could be removed for the given |
| subject, else returns <code>false</code>.</dd></dl> |
| </li> |
| </ul> |
| <a name="postEvent(java.util.EventObject, org.apache.cayenne.event.EventSubject)"> |
| <!-- --> |
| </a> |
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| <h4>postEvent</h4> |
| <pre>void postEvent(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/EventObject.html?is-external=true" title="class or interface in java.util">EventObject</a> event, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</pre> |
| <div class="block">Sends an event to all registered objects about a particular subject. Event is sent |
| synchronously, so the sender thread is blocked until all the listeners finish |
| processing the event.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>event</code> - the event to be posted to the observers</dd><dd><code>subject</code> - the subject about which observers will be notified</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if event or subject are null</dd></dl> |
| </li> |
| </ul> |
| <a name="postNonBlockingEvent(java.util.EventObject, org.apache.cayenne.event.EventSubject)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>postNonBlockingEvent</h4> |
| <pre>void postNonBlockingEvent(<a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/util/EventObject.html?is-external=true" title="class or interface in java.util">EventObject</a> event, |
| <a href="../../../../org/apache/cayenne/event/EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</pre> |
| <div class="block">Sends an event to all registered objects about a particular subject. Event is |
| queued by EventManager, releasing the sender thread, and is later dispatched in a |
| separate thread.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>event</code> - the event to be posted to the observers</dd><dd><code>subject</code> - the subject about which observers will be notified</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if event or subject are null</dd><dt><span class="strong">Since:</span></dt> |
| <dd>1.1</dd></dl> |
| </li> |
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