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 <pre>public abstract class <span class="typeNameLabel">Subscription</span>
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 <div class="block"><p>A subscription to kafka.</p></div>
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 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/kafka/spout/Subscription.html#getTopicsString--">getTopicsString</a></span>()</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/kafka/spout/Subscription.html#refreshAssignment--">refreshAssignment</a></span>()</code>
 <div class="block">NOOP is the default behavior, which means that Kafka will internally handle partition assignment.</div>
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 <td class="colFirst"><code>abstract &lt;K,V&gt;&nbsp;void</code></td>
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          org.apache.kafka.clients.consumer.ConsumerRebalanceListener&nbsp;listener,
          <a href="../../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a>&nbsp;context)</code>
 <div class="block">Subscribe the KafkaConsumer to the proper topics.</div>
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 <pre>public abstract&nbsp;&lt;K,V&gt;&nbsp;void&nbsp;subscribe(org.apache.kafka.clients.consumer.KafkaConsumer&lt;K,V&gt;&nbsp;consumer,
                                      org.apache.kafka.clients.consumer.ConsumerRebalanceListener&nbsp;listener,
                                      <a href="../../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a>&nbsp;context)</pre>
 <div class="block"><p>Subscribe the KafkaConsumer to the proper topics. Implementations must ensure that a given topic partition is always assigned to the same spout task. Adding and removing partitions as necessary is fine, but partitions must not move from one task to another. This constraint is only important for use with the Trident spout.</p></div>
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 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>consumer</code> - the Consumer to get.</dd>
 <dd><code>listener</code> - the rebalance listener to include in the subscription</dd>
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 <pre>public abstract&nbsp;<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getTopicsString()</pre>
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 <pre>public&nbsp;void&nbsp;refreshAssignment()</pre>
 <div class="block"><p>NOOP is the default behavior, which means that Kafka will internally handle partition assignment. If you wish to do manual partition management, you must provide an implementation of this method that will check with kafka for any changes and call the ConsumerRebalanceListener from subscribe to inform the rest of the system of those changes.</p></div>
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	<pre>public abstract class <span class="typeNameLabel">Subscription</span>
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	<div class="block"><p>A subscription to kafka.</p></div>
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	<td class="colFirst"><code>abstract <a href="http://docs.oracle.com/javase/7/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/kafka/spout/Subscription.html#getTopicsString--">getTopicsString</a></span>()</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/kafka/spout/Subscription.html#refreshAssignment--">refreshAssignment</a></span>()</code>
	<div class="block">NOOP is the default behavior, which means that Kafka will internally handle partition assignment.</div>
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	<td class="colFirst"><code>abstract <K,V> void</code></td>
	<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/kafka/spout/Subscription.html#subscribe-org.apache.kafka.clients.consumer.KafkaConsumer-org.apache.kafka.clients.consumer.ConsumerRebalanceListener-org.apache.storm.task.TopologyContext-">subscribe</a></span>(org.apache.kafka.clients.consumer.KafkaConsumer<K,V> consumer,
	org.apache.kafka.clients.consumer.ConsumerRebalanceListener listener,
	<a href="../../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context)</code>
	<div class="block">Subscribe the KafkaConsumer to the proper topics.</div>
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	<h4>Subscription</h4>
	<pre>public Subscription()</pre>
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	<a name="subscribe-org.apache.kafka.clients.consumer.KafkaConsumer-org.apache.kafka.clients.consumer.ConsumerRebalanceListener-org.apache.storm.task.TopologyContext-">
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	<h4>subscribe</h4>
	<pre>public abstract <K,V> void subscribe(org.apache.kafka.clients.consumer.KafkaConsumer<K,V> consumer,
	org.apache.kafka.clients.consumer.ConsumerRebalanceListener listener,
	<a href="../../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context)</pre>
	<div class="block"><p>Subscribe the KafkaConsumer to the proper topics. Implementations must ensure that a given topic partition is always assigned to the same spout task. Adding and removing partitions as necessary is fine, but partitions must not move from one task to another. This constraint is only important for use with the Trident spout.</p></div>
	<dl>
	<dt><span class="paramLabel">Parameters:</span></dt>
	<dd><code>consumer</code> - the Consumer to get.</dd>
	<dd><code>listener</code> - the rebalance listener to include in the subscription</dd>
	</dl>
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	<h4>getTopicsString</h4>
	<pre>public abstract <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> getTopicsString()</pre>
	<dl>
	<dt><span class="returnLabel">Returns:</span></dt>
	<dd>A human-readable string representing the subscribed topics.</dd>
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	<h4>refreshAssignment</h4>
	<pre>public void refreshAssignment()</pre>
	<div class="block"><p>NOOP is the default behavior, which means that Kafka will internally handle partition assignment. If you wish to do manual partition management, you must provide an implementation of this method that will check with kafka for any changes and call the ConsumerRebalanceListener from subscribe to inform the rest of the system of those changes.</p></div>
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