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| <h2 title="Interface JmsTupleProducer" class="title">Interface JmsTupleProducer</h2> |
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| <pre>public interface <span class="typeNameLabel">JmsTupleProducer</span> |
| extends <a href="http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre> |
| <div class="block"><p>Interface to define classes that can produce a Storm <code>Values</code> objects from a <code>javax.jms.Message</code> object>. <p> Implementations are also responsible for declaring the output fields they produce. <p> If for some reason the implementation can’t process a message (for example if it received a <code>javax.jms.ObjectMessage</code> when it was expecting a <code>javax.jms.TextMessage</code> it should return <code>null</code> to indicate to the <code>JmsSpout</code> that the message could not be processed.</p></div> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/jms/JmsTupleProducer.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 fields produced by this JmsTupleProducer.</div> |
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| <td class="colFirst"><code><a href="../../../../org/apache/storm/tuple/Values.html" title="class in org.apache.storm.tuple">Values</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/jms/JmsTupleProducer.html#toTuple-javax.jms.Message-">toTuple</a></span>(javax.jms.Message msg)</code> |
| <div class="block">Process a JMS message object to create a Values object.</div> |
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| <h4>toTuple</h4> |
| <pre><a href="../../../../org/apache/storm/tuple/Values.html" title="class in org.apache.storm.tuple">Values</a> toTuple(javax.jms.Message msg) |
| throws javax.jms.JMSException</pre> |
| <div class="block"><p>Process a JMS message object to create a Values object.</p></div> |
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| <li>the JMS message</li> |
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| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the Values tuple, or null if the message couldn’t be processed.</dd> |
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| <dd><code>javax.jms.JMSException</code></dd> |
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| <h4>declareOutputFields</h4> |
| <pre>void declareOutputFields(<a href="../../../../org/apache/storm/topology/OutputFieldsDeclarer.html" title="interface in org.apache.storm.topology">OutputFieldsDeclarer</a> declarer)</pre> |
| <div class="block"><p>Declare the output fields produced by this JmsTupleProducer.</p></div> |
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| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>declarer</code> - The OuputFieldsDeclarer for the spout.</dd> |
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