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<div class="subTitle">org.apache.storm.perf.spout</div>
<h2 title="Class WordGenSpout" class="title">Class WordGenSpout</h2>
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<li><a href="../../../../../org/apache/storm/topology/base/BaseRichSpout.html" title="class in org.apache.storm.topology.base">org.apache.storm.topology.base.BaseRichSpout</a></li>
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<li>org.apache.storm.perf.spout.WordGenSpout</li>
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<pre>public class <span class="typeNameLabel">WordGenSpout</span>
extends <a href="../../../../../org/apache/storm/topology/base/BaseRichSpout.html" title="class in org.apache.storm.topology.base">BaseRichSpout</a></pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../serialized-form.html#org.apache.storm.perf.spout.WordGenSpout">Serialized Form</a></dd>
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<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/perf/spout/WordGenSpout.html#FIELDS">FIELDS</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/perf/spout/WordGenSpout.html#WordGenSpout-java.lang.String-">WordGenSpout</a></span>(<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>&nbsp;file)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/perf/spout/WordGenSpout.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>&nbsp;declarer)</code>
<div class="block">Declare the output schema for all the streams of this topology.</div>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/perf/spout/WordGenSpout.html#nextTuple--">nextTuple</a></span>()</code>
<div class="block">When this method is called, Storm is requesting that the Spout emit tuples to the output collector.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/perf/spout/WordGenSpout.html#open-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.spout.SpoutOutputCollector-">open</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>&lt;<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>&gt;&nbsp;conf,
<a href="../../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a>&nbsp;context,
<a href="../../../../../org/apache/storm/spout/SpoutOutputCollector.html" title="class in org.apache.storm.spout">SpoutOutputCollector</a>&nbsp;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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<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</a>&lt;<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>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/perf/spout/WordGenSpout.html#readWords-java.lang.String-">readWords</a></span>(<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>&nbsp;file)</code>
<div class="block">Reads text file and extracts words from each line.</div>
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<code><a href="../../../../../org/apache/storm/topology/base/BaseRichSpout.html#ack-java.lang.Object-">ack</a>, <a href="../../../../../org/apache/storm/topology/base/BaseRichSpout.html#activate--">activate</a>, <a href="../../../../../org/apache/storm/topology/base/BaseRichSpout.html#close--">close</a>, <a href="../../../../../org/apache/storm/topology/base/BaseRichSpout.html#deactivate--">deactivate</a>, <a href="../../../../../org/apache/storm/topology/base/BaseRichSpout.html#fail-java.lang.Object-">fail</a></code></li>
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<code><a href="../../../../../org/apache/storm/topology/base/BaseComponent.html#getComponentConfiguration--">getComponentConfiguration</a></code></li>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <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#hashCode--" title="class or interface in java.lang">hashCode</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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<code><a href="../../../../../org/apache/storm/topology/IComponent.html#getComponentConfiguration--">getComponentConfiguration</a></code></li>
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<pre>public static final&nbsp;<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> FIELDS</pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../constant-values.html#org.apache.storm.perf.spout.WordGenSpout.FIELDS">Constant Field Values</a></dd>
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<h4>WordGenSpout</h4>
<pre>public&nbsp;WordGenSpout(<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>&nbsp;file)</pre>
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<h4>readWords</h4>
<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</a>&lt;<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>&gt;&nbsp;readWords(<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>&nbsp;file)</pre>
<div class="block"><p>Reads text file and extracts words from each line.</p></div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a list of all (non-unique) words</dd>
</dl>
</li>
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<a name="open-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.spout.SpoutOutputCollector-">
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<h4>open</h4>
<pre>public&nbsp;void&nbsp;open(<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>&lt;<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>&gt;&nbsp;conf,
<a href="../../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a>&nbsp;context,
<a href="../../../../../org/apache/storm/spout/SpoutOutputCollector.html" title="class in org.apache.storm.spout">SpoutOutputCollector</a>&nbsp;collector)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/storm/spout/ISpout.html#open-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.spout.SpoutOutputCollector-">ISpout</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 spout with the environment in which the spout executes.</p><p><p>This includes the:</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - The Storm configuration for this spout. 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&rsquo;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 spout. Tuples can be emitted at any time, including the open and close methods. The collector is thread-safe and should be saved as an instance variable of this spout object.</dd>
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<pre>public&nbsp;void&nbsp;nextTuple()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/storm/spout/ISpout.html#nextTuple--">ISpout</a></code></span></div>
<div class="block"><p>When this method is called, Storm is requesting that the Spout emit tuples to the output collector. This method should be non-blocking, so if the Spout has no tuples to emit, this method should return. nextTuple, ack, and fail are all called in a tight loop in a single thread in the spout task. When there are no tuples to emit, it is courteous to have nextTuple sleep for a short amount of time (like a single millisecond) so as not to waste too much CPU.</p></div>
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<pre>public&nbsp;void&nbsp;declareOutputFields(<a href="../../../../../org/apache/storm/topology/OutputFieldsDeclarer.html" title="interface in org.apache.storm.topology">OutputFieldsDeclarer</a>&nbsp;declarer)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<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>
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