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| <h2 title="Interface StreamerStage" class="title">Interface StreamerStage<span class='angle_bracket'><</span>IN<span class='angle_bracket'>></span></h2> |
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| <pre>public interface <span class="strong">StreamerStage<span class='angle_bracket'><</span>IN<span class='angle_bracket'>></span></span></pre> |
| <div class="block">Streamer stage is a component that determines event processing flow. User logic related to |
| any particular event processing is implemented by streamer stage. A stage takes events as |
| an input and returns groups of events mapped to different stages as an output. Events for |
| every returned stage will be passed to <a href="../../../../org/apache/ignite/streamer/StreamerEventRouter.html" title="interface in org.apache.ignite.streamer"><code>StreamerEventRouter</code></a> which will determine |
| on which node the stage should be executed. |
| <p> |
| Generally, event stage execution graph if fully controlled by return values of |
| this method, while node execution graph is controlled by |
| <a href="../../../../org/apache/ignite/streamer/StreamerEventRouter.html#route(org.apache.ignite.streamer.StreamerContext, java.lang.String, T)"><code>StreamerEventRouter.route(StreamerContext, String, Object)</code></a> method.</div> |
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| <h3>Method Summary</h3> |
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| <td class="colFirst"><code><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><strong><a href="../../../../org/apache/ignite/streamer/StreamerStage.html#name()">name</a></strong>()</code> |
| <div class="block">Gets streamer stage name.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><span class='angle_bracket'><</span><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>,<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span><span class='angle_bracket'>></span></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/streamer/StreamerStage.html#run(org.apache.ignite.streamer.StreamerContext, java.util.Collection)">run</a></strong>(<a href="../../../../org/apache/ignite/streamer/StreamerContext.html" title="interface in org.apache.ignite.streamer">StreamerContext</a> ctx, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../org/apache/ignite/streamer/StreamerStage.html" title="type parameter in StreamerStage">IN</a><span class='angle_bracket'>></span> evts)</code> |
| <div class="block">Stage execution routine.</div> |
| </td> |
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| <a name="name()"> |
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| <h4>name</h4> |
| <pre><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> name()</pre> |
| <div class="block">Gets streamer stage name.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Name of the stage.</dd></dl> |
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| <h4>run</h4> |
| <pre>@Nullable |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><span class='angle_bracket'><</span><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>,<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span><span class='angle_bracket'>></span> run(<a href="../../../../org/apache/ignite/streamer/StreamerContext.html" title="interface in org.apache.ignite.streamer">StreamerContext</a> ctx, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span><a href="../../../../org/apache/ignite/streamer/StreamerStage.html" title="type parameter in StreamerStage">IN</a><span class='angle_bracket'>></span> evts) |
| throws <a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Stage execution routine. After the passed in events are processed, stage can emit |
| another set of events to be processed. The returned events can be mapped to different |
| stages. Events for every returned stage will be passed to <a href="../../../../org/apache/ignite/streamer/StreamerEventRouter.html" title="interface in org.apache.ignite.streamer"><code>StreamerEventRouter</code></a> |
| which will determine on which node the stage should be executed. |
| <p> |
| Generally, event stage execution graph if fully controlled by return values of |
| this method, while node execution graph is controlled by |
| <a href="../../../../org/apache/ignite/streamer/StreamerEventRouter.html#route(org.apache.ignite.streamer.StreamerContext, java.lang.String, T)"><code>StreamerEventRouter.route(StreamerContext, String, Object)</code></a> method.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>ctx</code> - Streamer context.</dd><dd><code>evts</code> - Input events.</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Map of stage name to collection of events.</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If failed.</dd></dl> |
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| <p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://incubator.apache.org/projects/ignite.html"><nobr>2015 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Apache Ignite Fabric</b> </td> <td>: ver. <strong>1.0.0-RC3</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: March 24 2015 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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