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| <div class="subTitle">org.apache.storm.topology</div> |
| <h2 title="Interface IStatefulBolt" class="title">Interface IStatefulBolt<T extends <a href="../../../../org/apache/storm/state/State.html" title="interface in org.apache.storm.state">State</a>></h2> |
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| <dt>All Superinterfaces:</dt> |
| <dd><a href="../../../../org/apache/storm/topology/IComponent.html" title="interface in org.apache.storm.topology">IComponent</a>, <a href="../../../../org/apache/storm/topology/IStatefulComponent.html" title="interface in org.apache.storm.topology">IStatefulComponent</a><T>, <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></dd> |
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| <dd><a href="../../../../org/apache/storm/topology/base/BaseStatefulBolt.html" title="class in org.apache.storm.topology.base">BaseStatefulBolt</a>, <a href="../../../../org/apache/storm/topology/PersistentWindowedBoltExecutor.html" title="class in org.apache.storm.topology">PersistentWindowedBoltExecutor</a>, <a href="../../../../org/apache/storm/topology/StatefulWindowedBoltExecutor.html" title="class in org.apache.storm.topology">StatefulWindowedBoltExecutor</a>, <a href="../../../../org/apache/storm/flux/examples/StatefulWordCounter.html" title="class in org.apache.storm.flux.examples">StatefulWordCounter</a></dd> |
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| <pre>public interface <span class="typeNameLabel">IStatefulBolt<T extends <a href="../../../../org/apache/storm/state/State.html" title="interface in org.apache.storm.state">State</a>></span> |
| extends <a href="../../../../org/apache/storm/topology/IStatefulComponent.html" title="interface in org.apache.storm.topology">IStatefulComponent</a><T></pre> |
| <div class="block"><p>A bolt abstraction for supporting stateful computation. The state of the bolt is periodically checkpointed.</p> |
| <p>The framework provides at-least once guarantee for the |
| state updates. The stateful bolts are expected to anchor the tuples while emitting and ack the input tuples once its processed.</p></div> |
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| <h3>Method Summary</h3> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/IStatefulBolt.html#cleanup--">cleanup</a></span>()</code> |
| <div class="block">Analogue to bolt function.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/IStatefulBolt.html#execute-org.apache.storm.tuple.Tuple-">execute</a></span>(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a> input)</code> |
| <div class="block">Analogue to bolt function.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/IStatefulBolt.html#prepare-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-">prepare</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<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>> topoConf, |
| <a href="../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context, |
| <a href="../../../../org/apache/storm/task/OutputCollector.html" title="class in org.apache.storm.task">OutputCollector</a> collector)</code> |
| <div class="block">Analogue to bolt function.</div> |
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| <code><a href="../../../../org/apache/storm/topology/IStatefulComponent.html#initState-T-">initState</a>, <a href="../../../../org/apache/storm/topology/IStatefulComponent.html#preCommit-long-">preCommit</a>, <a href="../../../../org/apache/storm/topology/IStatefulComponent.html#prePrepare-long-">prePrepare</a>, <a href="../../../../org/apache/storm/topology/IStatefulComponent.html#preRollback--">preRollback</a></code></li> |
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| <h3>Methods inherited from interface org.apache.storm.topology.<a href="../../../../org/apache/storm/topology/IComponent.html" title="interface in org.apache.storm.topology">IComponent</a></h3> |
| <code><a href="../../../../org/apache/storm/topology/IComponent.html#declareOutputFields-org.apache.storm.topology.OutputFieldsDeclarer-">declareOutputFields</a>, <a href="../../../../org/apache/storm/topology/IComponent.html#getComponentConfiguration--">getComponentConfiguration</a></code></li> |
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| <h4>prepare</h4> |
| <pre>void prepare(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<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>> topoConf, |
| <a href="../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context, |
| <a href="../../../../org/apache/storm/task/OutputCollector.html" title="class in org.apache.storm.task">OutputCollector</a> collector)</pre> |
| <div class="block"><p>Analogue to bolt function.</p></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/storm/task/IBolt.html#prepare-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-"><code>IBolt.prepare(Map, TopologyContext, OutputCollector)</code></a></dd> |
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| <h4>execute</h4> |
| <pre>void execute(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a> input)</pre> |
| <div class="block"><p>Analogue to bolt function.</p></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/storm/task/IBolt.html#execute-org.apache.storm.tuple.Tuple-"><code>IBolt.execute(Tuple)</code></a></dd> |
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| <h4>cleanup</h4> |
| <pre>void cleanup()</pre> |
| <div class="block"><p>Analogue to bolt function.</p></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../org/apache/storm/task/IBolt.html#cleanup--"><code>IBolt.cleanup()</code></a></dd> |
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