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| <li>Summary: </li> |
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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.storm.topology</a></div> |
| <h1 title="Interface IStatefulWindowedBolt" class="title">Interface IStatefulWindowedBolt<T extends <a href="../state/State.html" title="interface in org.apache.storm.state">State</a>></h1> |
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| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="IComponent.html" title="interface in org.apache.storm.topology">IComponent</a></code>, <code><a href="IStatefulComponent.html" title="interface in org.apache.storm.topology">IStatefulComponent</a><T></code>, <code><a href="IWindowedBolt.html" title="interface in org.apache.storm.topology">IWindowedBolt</a></code>, <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/Serializable.html" title="class or interface in java.io" class="external-link">Serializable</a></code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="base/BaseStatefulWindowedBolt.html" title="class in org.apache.storm.topology.base">BaseStatefulWindowedBolt</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">IStatefulWindowedBolt<T extends <a href="../state/State.html" title="interface in org.apache.storm.state">State</a>></span><span class="extends-implements"> |
| extends <a href="IStatefulComponent.html" title="interface in org.apache.storm.topology">IStatefulComponent</a><T>, <a href="IWindowedBolt.html" title="interface in org.apache.storm.topology">IWindowedBolt</a></span></div> |
| <div class="block">A windowed bolt abstraction for supporting windowing operation with state.</div> |
| </section> |
| <section class="summary"> |
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| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
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| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab5"><code>default boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab5"><code><a href="#isPersistent()" class="member-name-link">isPersistent</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab5"> |
| <div class="block">If the stateful windowed bolt should have its windows persisted in state and maintain a subset of events in memory.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab5"><code>default long</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab5"><code><a href="#maxEventsInMemory()" class="member-name-link">maxEventsInMemory</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab5"> |
| <div class="block">The maximum number of window events to keep in memory.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.storm.topology.IComponent">Methods inherited from interface org.apache.storm.topology.<a href="IComponent.html" title="interface in org.apache.storm.topology">IComponent</a></h3> |
| <code><a href="IComponent.html#declareOutputFields(org.apache.storm.topology.OutputFieldsDeclarer)">declareOutputFields</a>, <a href="IComponent.html#getComponentConfiguration()">getComponentConfiguration</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.storm.topology.IStatefulComponent">Methods inherited from interface org.apache.storm.topology.<a href="IStatefulComponent.html" title="interface in org.apache.storm.topology">IStatefulComponent</a></h3> |
| <code><a href="IStatefulComponent.html#initState(T)">initState</a>, <a href="IStatefulComponent.html#preCommit(long)">preCommit</a>, <a href="IStatefulComponent.html#prePrepare(long)">prePrepare</a>, <a href="IStatefulComponent.html#preRollback()">preRollback</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.storm.topology.IWindowedBolt">Methods inherited from interface org.apache.storm.topology.<a href="IWindowedBolt.html" title="interface in org.apache.storm.topology">IWindowedBolt</a></h3> |
| <code><a href="IWindowedBolt.html#cleanup()">cleanup</a>, <a href="IWindowedBolt.html#execute(org.apache.storm.windowing.TupleWindow)">execute</a>, <a href="IWindowedBolt.html#getTimestampExtractor()">getTimestampExtractor</a>, <a href="IWindowedBolt.html#prepare(java.util.Map,org.apache.storm.task.TopologyContext,org.apache.storm.task.OutputCollector)">prepare</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="isPersistent()"> |
| <h3>isPersistent</h3> |
| <div class="member-signature"><span class="modifiers">default</span> <span class="return-type">boolean</span> <span class="element-name">isPersistent</span>()</div> |
| <div class="block">If the stateful windowed bolt should have its windows persisted in state and maintain a subset of events in memory. |
| <p> |
| The default is to keep all the window events in memory. |
| </p></div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>true if the windows should be persisted</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="maxEventsInMemory()"> |
| <h3>maxEventsInMemory</h3> |
| <div class="member-signature"><span class="modifiers">default</span> <span class="return-type">long</span> <span class="element-name">maxEventsInMemory</span>()</div> |
| <div class="block">The maximum number of window events to keep in memory.</div> |
| </section> |
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