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| <li>Summary: </li> |
| <li>Nested | </li> |
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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.cayenne.event</a></div> |
| <h2 title="Interface EventManager" class="title">Interface EventManager</h2> |
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| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="DefaultEventManager.html" title="class in org.apache.cayenne.event">DefaultEventManager</a></code>, <code><a href="NoopEventManager.html" title="class in org.apache.cayenne.event">NoopEventManager</a></code></dd> |
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| <hr> |
| <pre>public interface <span class="typeNameLabel">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="simpleTagLabel">Since:</span></dt> |
| <dd>3.1 before 3.1 this was a concrete class.</dd> |
| </dl> |
| </li> |
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| <li class="blockList"> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <li class="blockList"><a id="method.summary"> |
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| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addListener(java.lang.Object,java.lang.String,java.lang.Class,org.apache.cayenne.event.EventSubject)">addListener</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> eventParameterClass, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code></th> |
| <td class="colLast"> |
| <div class="block">Register an <code>EventListener</code> for events sent by any sender.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addListener(java.lang.Object,java.lang.String,java.lang.Class,org.apache.cayenne.event.EventSubject,java.lang.Object)">addListener</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> eventParameterClass, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> sender)</code></th> |
| <td class="colLast"> |
| <div class="block">Register an <code>EventListener</code> for events sent by a specific sender.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addNonBlockingListener(java.lang.Object,java.lang.String,java.lang.Class,org.apache.cayenne.event.EventSubject)">addNonBlockingListener</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> eventParameterClass, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addNonBlockingListener(java.lang.Object,java.lang.String,java.lang.Class,org.apache.cayenne.event.EventSubject,java.lang.Object)">addNonBlockingListener</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> eventParameterClass, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> sender)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isSingleThreaded()">isSingleThreaded</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns true if this EventManager is single-threaded.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#postEvent(java.util.EventObject,org.apache.cayenne.event.EventSubject)">postEvent</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/EventObject.html?is-external=true" title="class or interface in java.util" class="externalLink">EventObject</a> event, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code></th> |
| <td class="colLast"> |
| <div class="block">Sends an event to all registered objects about a particular subject.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#postNonBlockingEvent(java.util.EventObject,org.apache.cayenne.event.EventSubject)">postNonBlockingEvent</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/EventObject.html?is-external=true" title="class or interface in java.util" class="externalLink">EventObject</a> event, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code></th> |
| <td class="colLast"> |
| <div class="block">Sends an event to all registered objects about a particular subject.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#removeAllListeners(org.apache.cayenne.event.EventSubject)">removeAllListeners</a></span>​(<a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code></th> |
| <td class="colLast"> |
| <div class="block">Removes all listeners for a given subject.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#removeListener(java.lang.Object)">removeListener</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener)</code></th> |
| <td class="colLast"> |
| <div class="block">Unregister the specified listener from all event subjects handled by this manager |
| instance.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#removeListener(java.lang.Object,org.apache.cayenne.event.EventSubject)">removeListener</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</code></th> |
| <td class="colLast"> |
| <div class="block">Unregister the specified listener for the events about the given subject.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#removeListener(java.lang.Object,org.apache.cayenne.event.EventSubject,java.lang.Object)">removeListener</a></span>​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> sender)</code></th> |
| <td class="colLast"> |
| <div class="block">Unregister the specified listener for the events about the given subject and the |
| given sender.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="method.detail"> |
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| </a> |
| <h3>Method Detail</h3> |
| <a id="isSingleThreaded()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isSingleThreaded</h4> |
| <pre class="methodSignature">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="simpleTagLabel">Since:</span></dt> |
| <dd>1.2</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="addListener(java.lang.Object,java.lang.String,java.lang.Class,org.apache.cayenne.event.EventSubject)"> |
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| <h4>addListener</h4> |
| <pre class="methodSignature">void addListener​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> eventParameterClass, |
| <a href="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="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang" class="externalLink">RuntimeException</a></code> - if <code>methodName</code> is not found.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="addNonBlockingListener(java.lang.Object,java.lang.String,java.lang.Class,org.apache.cayenne.event.EventSubject)"> |
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| </a> |
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| <li class="blockList"> |
| <h4>addNonBlockingListener</h4> |
| <pre class="methodSignature">void addNonBlockingListener​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> eventParameterClass, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject)</pre> |
| </li> |
| </ul> |
| <a id="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 class="methodSignature">void addListener​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> eventParameterClass, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> sender)</pre> |
| <div class="block">Register an <code>EventListener</code> for events sent by a specific sender.</div> |
| <dl> |
| <dt><span class="paramLabel">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="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang" class="externalLink">RuntimeException</a></code> - if <code>methodName</code> is not found</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="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 class="methodSignature">void addNonBlockingListener​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> eventParameterClass, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> sender)</pre> |
| </li> |
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| <h4>removeListener</h4> |
| <pre class="methodSignature">boolean removeListener​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">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="paramLabel">Parameters:</span></dt> |
| <dd><code>listener</code> - the object to be unregistered</dd> |
| <dt><span class="returnLabel">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> |
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| <h4>removeAllListeners</h4> |
| <pre class="methodSignature">boolean removeAllListeners​(<a href="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 id="removeListener(java.lang.Object,org.apache.cayenne.event.EventSubject)"> |
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| <h4>removeListener</h4> |
| <pre class="methodSignature">boolean removeListener​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="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="paramLabel">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="returnLabel">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 id="removeListener(java.lang.Object,org.apache.cayenne.event.EventSubject,java.lang.Object)"> |
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| <h4>removeListener</h4> |
| <pre class="methodSignature">boolean removeListener​(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> listener, |
| <a href="EventSubject.html" title="class in org.apache.cayenne.event">EventSubject</a> subject, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">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="paramLabel">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="returnLabel">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> |
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| <h4>postEvent</h4> |
| <pre class="methodSignature">void postEvent​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/EventObject.html?is-external=true" title="class or interface in java.util" class="externalLink">EventObject</a> event, |
| <a href="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="paramLabel">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="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></code> - if event or subject are null</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>postNonBlockingEvent</h4> |
| <pre class="methodSignature">void postNonBlockingEvent​(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/EventObject.html?is-external=true" title="class or interface in java.util" class="externalLink">EventObject</a> event, |
| <a href="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="paramLabel">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="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></code> - if event or subject are null</dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.1</dd> |
| </dl> |
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