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<div class="subTitle">org.apache.jmeter.control</div>
<h2 title="Class OnceOnlyController" class="title">Class OnceOnlyController</h2>
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<li><a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html" title="class in org.apache.jmeter.testelement">org.apache.jmeter.testelement.AbstractTestElement</a></li>
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<ul class="inheritance">
<li><a href="../../../../org/apache/jmeter/control/GenericController.html" title="class in org.apache.jmeter.control">org.apache.jmeter.control.GenericController</a></li>
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<li>org.apache.jmeter.control.OnceOnlyController</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Cloneable.html?is-external=true" title="class or interface in java.lang">Cloneable</a>, <a href="../../../../org/apache/jmeter/control/Controller.html" title="interface in org.apache.jmeter.control">Controller</a>, <a href="../../../../org/apache/jmeter/engine/event/LoopIterationListener.html" title="interface in org.apache.jmeter.engine.event">LoopIterationListener</a>, <a href="../../../../org/apache/jmeter/gui/Searchable.html" title="interface in org.apache.jmeter.gui">Searchable</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html" title="interface in org.apache.jmeter.testelement">TestElement</a>, <a href="../../../../org/apache/jmeter/threads/TestCompilerHelper.html" title="interface in org.apache.jmeter.threads">TestCompilerHelper</a></dd>
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<pre>public class <span class="typeNameLabel">OnceOnlyController</span>
extends <a href="../../../../org/apache/jmeter/control/GenericController.html" title="class in org.apache.jmeter.control">GenericController</a>
implements <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="../../../../org/apache/jmeter/engine/event/LoopIterationListener.html" title="interface in org.apache.jmeter.engine.event">LoopIterationListener</a></pre>
<div class="block">Controller to run its children once per cycle.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../serialized-form.html#org.apache.jmeter.control.OnceOnlyController">Serialized Form</a></dd>
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<h3>Fields inherited from class&nbsp;org.apache.jmeter.control.<a href="../../../../org/apache/jmeter/control/GenericController.html" title="class in org.apache.jmeter.control">GenericController</a></h3>
<code><a href="../../../../org/apache/jmeter/control/GenericController.html#current">current</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#subControllersAndSamplers">subControllersAndSamplers</a></code></li>
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<code><a href="../../../../org/apache/jmeter/testelement/TestElement.html#COMMENTS">COMMENTS</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#ENABLED">ENABLED</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#GUI_CLASS">GUI_CLASS</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#NAME">NAME</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#TEST_CLASS">TEST_CLASS</a></code></li>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/jmeter/control/OnceOnlyController.html#OnceOnlyController--">OnceOnlyController</a></span>()</code>
<div class="block">Constructor for the OnceOnlyController object.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jmeter/control/OnceOnlyController.html#iterationStart-org.apache.jmeter.engine.event.LoopIterationEvent-">iterationStart</a></span>(<a href="../../../../org/apache/jmeter/engine/event/LoopIterationEvent.html" title="class in org.apache.jmeter.engine.event">LoopIterationEvent</a>&nbsp;event)</code>
<div class="block">Called when a loop iteration is about to start.</div>
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<td class="colFirst"><code>protected <a href="../../../../org/apache/jmeter/samplers/Sampler.html" title="interface in org.apache.jmeter.samplers">Sampler</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jmeter/control/OnceOnlyController.html#nextIsNull--">nextIsNull</a></span>()</code>
<div class="block">Called by <a href="../../../../org/apache/jmeter/control/GenericController.html#next--"><code>GenericController.next()</code></a> when <a href="../../../../org/apache/jmeter/control/GenericController.html#getCurrentElement--"><code>GenericController.getCurrentElement()</code></a> returns <code>null</code>.</div>
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<h3>Methods inherited from class&nbsp;org.apache.jmeter.control.<a href="../../../../org/apache/jmeter/control/GenericController.html" title="class in org.apache.jmeter.control">GenericController</a></h3>
<code><a href="../../../../org/apache/jmeter/control/GenericController.html#addIterationListener-org.apache.jmeter.engine.event.LoopIterationListener-">addIterationListener</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#addTestElement-org.apache.jmeter.testelement.TestElement-">addTestElement</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#addTestElementOnce-org.apache.jmeter.testelement.TestElement-">addTestElementOnce</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#currentReturnedNull-org.apache.jmeter.control.Controller-">currentReturnedNull</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#fireIterationStart--">fireIterationStart</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#fireIterEvents--">fireIterEvents</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#getCurrentElement--">getCurrentElement</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#getIterCount--">getIterCount</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#getSubControllers--">getSubControllers</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#incrementCurrent--">incrementCurrent</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#incrementIterCount--">incrementIterCount</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#initialize--">initialize</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#initializeSubControllers--">initializeSubControllers</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#isDone--">isDone</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#isFirst--">isFirst</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#next--">next</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#nextIsAController-org.apache.jmeter.control.Controller-">nextIsAController</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#nextIsASampler-org.apache.jmeter.samplers.Sampler-">nextIsASampler</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#readResolve--">readResolve</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#reInitialize--">reInitialize</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#removeCurrentElement--">removeCurrentElement</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#removeIterationListener-org.apache.jmeter.engine.event.LoopIterationListener-">removeIterationListener</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#resetCurrent--">resetCurrent</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#resetIterCount--">resetIterCount</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#setCurrentElement-org.apache.jmeter.testelement.TestElement-">setCurrentElement</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#setDone-boolean-">setDone</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#setFirst-boolean-">setFirst</a>, <a href="../../../../org/apache/jmeter/control/GenericController.html#triggerEndOfLoop--">triggerEndOfLoop</a></code></li>
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<h3>Methods inherited from class&nbsp;org.apache.jmeter.testelement.<a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html" title="class in org.apache.jmeter.testelement">AbstractTestElement</a></h3>
<code><a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#addPropertiesValues-java.util.List-java.util.Set-">addPropertiesValues</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#addProperty-org.apache.jmeter.testelement.property.JMeterProperty-">addProperty</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#addProperty-org.apache.jmeter.testelement.property.JMeterProperty-boolean-">addProperty</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#canRemove--">canRemove</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#clear--">clear</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#clearTemporary-org.apache.jmeter.testelement.property.JMeterProperty-">clearTemporary</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#clearTestElementChildren--">clearTestElementChildren</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#clone--">clone</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#emptyTemporary--">emptyTemporary</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#equals-java.lang.Object-">equals</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#getComment--">getComment</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#getName--">getName</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#getProperty-java.lang.String-">getProperty</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#getPropertyAsBoolean-java.lang.String-">getPropertyAsBoolean</a>, <a href="../../../../org/apache/jmeter/testelement/AbstractTestElement.html#getPropertyAsBoolean-java.lang.String-boolean-">getPropertyAsBoolean</a>, <a 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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.jmeter.testelement.<a href="../../../../org/apache/jmeter/testelement/TestElement.html" title="interface in org.apache.jmeter.testelement">TestElement</a></h3>
<code><a href="../../../../org/apache/jmeter/testelement/TestElement.html#canRemove--">canRemove</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#clear--">clear</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#clearTestElementChildren--">clearTestElementChildren</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#clone--">clone</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getComment--">getComment</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getName--">getName</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getProperty-java.lang.String-">getProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsBoolean-java.lang.String-">getPropertyAsBoolean</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsBoolean-java.lang.String-boolean-">getPropertyAsBoolean</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsDouble-java.lang.String-">getPropertyAsDouble</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsFloat-java.lang.String-">getPropertyAsFloat</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsInt-java.lang.String-">getPropertyAsInt</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsInt-java.lang.String-int-">getPropertyAsInt</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsLong-java.lang.String-">getPropertyAsLong</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsLong-java.lang.String-long-">getPropertyAsLong</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsString-java.lang.String-">getPropertyAsString</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getPropertyAsString-java.lang.String-java.lang.String-">getPropertyAsString</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getThreadContext--">getThreadContext</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#getThreadName--">getThreadName</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#isEnabled--">isEnabled</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#isRunningVersion--">isRunningVersion</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#isTemporary-org.apache.jmeter.testelement.property.JMeterProperty-">isTemporary</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#propertyIterator--">propertyIterator</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#recoverRunningVersion--">recoverRunningVersion</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#removed--">removed</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#removeProperty-java.lang.String-">removeProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setComment-java.lang.String-">setComment</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setEnabled-boolean-">setEnabled</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setName-java.lang.String-">setName</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-org.apache.jmeter.testelement.property.JMeterProperty-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-java.lang.String-boolean-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-java.lang.String-boolean-boolean-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-java.lang.String-int-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-java.lang.String-int-int-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-java.lang.String-long-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-java.lang.String-long-long-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-java.lang.String-java.lang.String-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setProperty-java.lang.String-java.lang.String-java.lang.String-">setProperty</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setRunningVersion-boolean-">setRunningVersion</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setTemporary-org.apache.jmeter.testelement.property.JMeterProperty-">setTemporary</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setThreadContext-org.apache.jmeter.threads.JMeterContext-">setThreadContext</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#setThreadName-java.lang.String-">setThreadName</a>, <a href="../../../../org/apache/jmeter/testelement/TestElement.html#traverse-org.apache.jmeter.testelement.TestElementTraverser-">traverse</a></code></li>
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<h4>OnceOnlyController</h4>
<pre>public&nbsp;OnceOnlyController()</pre>
<div class="block">Constructor for the OnceOnlyController object.</div>
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<h4>iterationStart</h4>
<pre>public&nbsp;void&nbsp;iterationStart(<a href="../../../../org/apache/jmeter/engine/event/LoopIterationEvent.html" title="class in org.apache.jmeter.engine.event">LoopIterationEvent</a>&nbsp;event)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/jmeter/engine/event/LoopIterationListener.html#iterationStart-org.apache.jmeter.engine.event.LoopIterationEvent-">LoopIterationListener</a></code></span></div>
<div class="block">Called when a loop iteration is about to start.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/jmeter/engine/event/LoopIterationListener.html#iterationStart-org.apache.jmeter.engine.event.LoopIterationEvent-">iterationStart</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/jmeter/engine/event/LoopIterationListener.html" title="interface in org.apache.jmeter.engine.event">LoopIterationListener</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>event</code> - the event</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/jmeter/engine/event/LoopIterationListener.html#iterationStart-org.apache.jmeter.engine.event.LoopIterationEvent-"><code>LoopIterationListener.iterationStart(LoopIterationEvent)</code></a></dd>
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<h4>nextIsNull</h4>
<pre>protected&nbsp;<a href="../../../../org/apache/jmeter/samplers/Sampler.html" title="interface in org.apache.jmeter.samplers">Sampler</a>&nbsp;nextIsNull()
throws <a href="../../../../org/apache/jmeter/control/NextIsNullException.html" title="class in org.apache.jmeter.control">NextIsNullException</a></pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../org/apache/jmeter/control/GenericController.html#nextIsNull--">GenericController</a></code></span></div>
<div class="block">Called by <a href="../../../../org/apache/jmeter/control/GenericController.html#next--"><code>GenericController.next()</code></a> when <a href="../../../../org/apache/jmeter/control/GenericController.html#getCurrentElement--"><code>GenericController.getCurrentElement()</code></a> returns <code>null</code>.
Reinitialises the controller.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../org/apache/jmeter/control/GenericController.html#nextIsNull--">nextIsNull</a></code>&nbsp;in class&nbsp;<code><a href="../../../../org/apache/jmeter/control/GenericController.html" title="class in org.apache.jmeter.control">GenericController</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>null (always, for this class)</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../org/apache/jmeter/control/NextIsNullException.html" title="class in org.apache.jmeter.control">NextIsNullException</a></code> - when the end of the list has already been reached</dd>
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