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| <h2 title="Class StatefulBoltExecutor" class="title">Class StatefulBoltExecutor<T extends <a href="../../../../org/apache/storm/state/State.html" title="interface in org.apache.storm.state">State</a>></h2> |
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| <li>org.apache.storm.topology.StatefulBoltExecutor<T></li> |
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| <pre>public class <span class="typeNameLabel">StatefulBoltExecutor<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/BaseStatefulBoltExecutor.html" title="class in org.apache.storm.topology">BaseStatefulBoltExecutor</a></pre> |
| <div class="block"><p>Wraps a <a href="../../../../org/apache/storm/topology/IStatefulBolt.html" title="interface in org.apache.storm.topology"><code>IStatefulBolt</code></a> and manages the state of the bolt.</p></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../serialized-form.html#org.apache.storm.topology.StatefulBoltExecutor">Serialized Form</a></dd> |
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| <code><a href="../../../../org/apache/storm/topology/BaseStatefulBoltExecutor.AnchoringOutputCollector.html" title="class in org.apache.storm.topology">BaseStatefulBoltExecutor.AnchoringOutputCollector</a></code></li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/StatefulBoltExecutor.html#StatefulBoltExecutor-org.apache.storm.topology.IStatefulBolt-">StatefulBoltExecutor</a></span>(<a href="../../../../org/apache/storm/topology/IStatefulBolt.html" title="interface in org.apache.storm.topology">IStatefulBolt</a><<a href="../../../../org/apache/storm/topology/StatefulBoltExecutor.html" title="type parameter in StatefulBoltExecutor">T</a>> bolt)</code> </td> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/StatefulBoltExecutor.html#cleanup--">cleanup</a></span>()</code> |
| <div class="block">Called when an IBolt is going to be shutdown.</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/StatefulBoltExecutor.html#declareOutputFields-org.apache.storm.topology.OutputFieldsDeclarer-">declareOutputFields</a></span>(<a href="../../../../org/apache/storm/topology/OutputFieldsDeclarer.html" title="interface in org.apache.storm.topology">OutputFieldsDeclarer</a> declarer)</code> |
| <div class="block">Declare the output schema for all the streams of this topology.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><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>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/StatefulBoltExecutor.html#getComponentConfiguration--">getComponentConfiguration</a></span>()</code> |
| <div class="block">Declare configuration specific to this component.</div> |
| </td> |
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| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/StatefulBoltExecutor.html#handleCheckpoint-org.apache.storm.tuple.Tuple-org.apache.storm.spout.CheckPointState.Action-long-">handleCheckpoint</a></span>(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a> checkpointTuple, |
| <a href="../../../../org/apache/storm/spout/CheckPointState.Action.html" title="enum in org.apache.storm.spout">CheckPointState.Action</a> action, |
| long txid)</code> |
| <div class="block">Sub-classes can implement the logic for handling checkpoint tuple.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/StatefulBoltExecutor.html#handleTuple-org.apache.storm.tuple.Tuple-">handleTuple</a></span>(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a> input)</code> |
| <div class="block">Sub-classes can implement the logic for handling the tuple.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/topology/StatefulBoltExecutor.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">Called when a task for this component is initialized within a worker on the cluster.</div> |
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| <code><a href="../../../../org/apache/storm/topology/BaseStatefulBoltExecutor.html#declareCheckpointStream-org.apache.storm.topology.OutputFieldsDeclarer-">declareCheckpointStream</a>, <a href="../../../../org/apache/storm/topology/BaseStatefulBoltExecutor.html#execute-org.apache.storm.tuple.Tuple-">execute</a>, <a href="../../../../org/apache/storm/topology/BaseStatefulBoltExecutor.html#init-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-">init</a></code></li> |
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| <h4>StatefulBoltExecutor</h4> |
| <pre>public StatefulBoltExecutor(<a href="../../../../org/apache/storm/topology/IStatefulBolt.html" title="interface in org.apache.storm.topology">IStatefulBolt</a><<a href="../../../../org/apache/storm/topology/StatefulBoltExecutor.html" title="type parameter in StatefulBoltExecutor">T</a>> bolt)</pre> |
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| <h3>Method Detail</h3> |
| <a name="prepare-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-"> |
| <!-- --> |
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| <ul class="blockList"> |
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| <h4>prepare</h4> |
| <pre>public 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/task/IBolt.html#prepare-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-">IBolt</a></code></span></div> |
| <div class="block"><p>Called when a task for this component is initialized within a worker on the cluster. It provides the bolt with the environment in which the bolt executes.</p><p><p>This includes the:</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>topoConf</code> - The Storm configuration for this bolt. This is the configuration provided to the topology merged in with cluster configuration on this machine.</dd> |
| <dd><code>context</code> - This object can be used to get information about this task’s place within the topology, including the task id and component id of this task, input and output information, etc.</dd> |
| <dd><code>collector</code> - The collector is used to emit tuples from this bolt. Tuples can be emitted at any time, including the prepare and cleanup methods. The collector is thread-safe and should be saved as an instance variable of this bolt object.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>cleanup</h4> |
| <pre>public void cleanup()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/task/IBolt.html#cleanup--">IBolt</a></code></span></div> |
| <div class="block"><p>Called when an IBolt is going to be shutdown. Storm will make a best-effort attempt to call this if the worker shutdown is orderly. The <a href="../../../../org/apache/storm/Config.html#SUPERVISOR_WORKER_SHUTDOWN_SLEEP_SECS"><code>Config.SUPERVISOR_WORKER_SHUTDOWN_SLEEP_SECS</code></a> setting controls how long orderly shutdown is allowed to take. There is no guarantee that cleanup will be called if shutdown is not orderly, or if the shutdown exceeds the time limit.</p><p><p>The one context where cleanup is guaranteed to be called is when a topology is killed when running Storm in local mode.</p></div> |
| </li> |
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| <a name="declareOutputFields-org.apache.storm.topology.OutputFieldsDeclarer-"> |
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| <h4>declareOutputFields</h4> |
| <pre>public void declareOutputFields(<a href="../../../../org/apache/storm/topology/OutputFieldsDeclarer.html" title="interface in org.apache.storm.topology">OutputFieldsDeclarer</a> declarer)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/topology/IComponent.html#declareOutputFields-org.apache.storm.topology.OutputFieldsDeclarer-">IComponent</a></code></span></div> |
| <div class="block"><p>Declare the output schema for all the streams of this topology.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>declarer</code> - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getComponentConfiguration--"> |
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| <h4>getComponentConfiguration</h4> |
| <pre>public <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>> getComponentConfiguration()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/topology/IComponent.html#getComponentConfiguration--">IComponent</a></code></span></div> |
| <div class="block"><p>Declare configuration specific to this component. Only a subset of the “topology.*” configs can be overridden. The component configuration can be further overridden when constructing the topology using <a href="../../../../org/apache/storm/topology/TopologyBuilder.html" title="class in org.apache.storm.topology"><code>TopologyBuilder</code></a></p></div> |
| </li> |
| </ul> |
| <a name="handleCheckpoint-org.apache.storm.tuple.Tuple-org.apache.storm.spout.CheckPointState.Action-long-"> |
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| </a> |
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| <h4>handleCheckpoint</h4> |
| <pre>protected void handleCheckpoint(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a> checkpointTuple, |
| <a href="../../../../org/apache/storm/spout/CheckPointState.Action.html" title="enum in org.apache.storm.spout">CheckPointState.Action</a> action, |
| long txid)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../org/apache/storm/topology/BaseStatefulBoltExecutor.html#handleCheckpoint-org.apache.storm.tuple.Tuple-org.apache.storm.spout.CheckPointState.Action-long-">BaseStatefulBoltExecutor</a></code></span></div> |
| <div class="block"><p>Sub-classes can implement the logic for handling checkpoint tuple.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
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| <dd><code>checkpointTuple</code> - the checkpoint tuple</dd> |
| <dd><code>action</code> - the action (prepare, commit, rollback or initstate)</dd> |
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| <h4>handleTuple</h4> |
| <pre>protected void handleTuple(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a> input)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../org/apache/storm/topology/BaseStatefulBoltExecutor.html#handleTuple-org.apache.storm.tuple.Tuple-">BaseStatefulBoltExecutor</a></code></span></div> |
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| <dd><code>input</code> - the input tuple</dd> |
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