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| <div class="subTitle">org.apache.ignite.compute</div> |
| <h2 title="Interface ComputeTaskContinuousMapper" class="title">Interface ComputeTaskContinuousMapper</h2> |
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| <pre>public interface <span class="typeNameLabel">ComputeTaskContinuousMapper</span></pre> |
| <div class="block">Defines a mapper that can be used for asynchronous job sending. Useful for |
| streaming jobs within the same task. Note that if job number within a task |
| grows too large, it is best to attach <a href="../../../../org/apache/ignite/compute/ComputeTaskNoResultCache.html" title="annotation in org.apache.ignite.compute"><code>ComputeTaskNoResultCache</code></a> annotation |
| to task to make sure that collection of job results and job siblings does |
| not grow indefinitely. |
| <p> |
| Continuous mapper methods can be used right after it injected into a task. |
| Mapper can not be used after <a href="../../../../org/apache/ignite/compute/ComputeTask.html#result-org.apache.ignite.compute.ComputeJobResult-java.util.List-"><code>ComputeTask.result(ComputeJobResult, List)</code></a> |
| method returned the <a href="../../../../org/apache/ignite/compute/ComputeJobResultPolicy.html#REDUCE"><code>ComputeJobResultPolicy.REDUCE</code></a> policy. Also if |
| <a href="../../../../org/apache/ignite/compute/ComputeTask.html#result-org.apache.ignite.compute.ComputeJobResult-java.util.List-"><code>ComputeTask.result(ComputeJobResult, List)</code></a> method returned the |
| <a href="../../../../org/apache/ignite/compute/ComputeJobResultPolicy.html#WAIT"><code>ComputeJobResultPolicy.WAIT</code></a> policy and all jobs are finished then task |
| will go to reducing results and continuous mapper can not be used. |
| <p> |
| Note that whenever continuous mapper is used, <a href="../../../../org/apache/ignite/compute/ComputeTask.html#map-java.util.List-T-"><code>ComputeTask.map(List, Object)</code></a> |
| method is allowed to return <code>null</code> in case when at least one job |
| has been sent prior to completing the <a href="../../../../org/apache/ignite/compute/ComputeTask.html#map-java.util.List-T-"><code>ComputeTask.map(List, Object)</code></a> method. |
| <p> |
| Task continuous mapper can be injected into a task using IoC (dependency |
| injection) by attaching <a href="../../../../org/apache/ignite/resources/TaskContinuousMapperResource.html" title="annotation in org.apache.ignite.resources"><code>TaskContinuousMapperResource</code></a> |
| annotation to a field or a setter method inside of <a href="../../../../org/apache/ignite/compute/ComputeTask.html" title="interface in org.apache.ignite.compute"><code>ComputeTask</code></a> implementations |
| as follows: |
| <pre name="code" class="java"> |
| ... |
| // This field will be injected with task continuous mapper. |
| @TaskContinuousMapperResource |
| private ComputeTaskContinuousMapper mapper; |
| ... |
| </pre> |
| or from a setter method: |
| <pre name="code" class="java"> |
| // This setter method will be automatically called by the system |
| // to set grid task continuous mapper. |
| @TaskContinuousMapperResource |
| void setSession(ComputeTaskContinuousMapper mapper) { |
| this.mapper = mapper; |
| } |
| </pre></div> |
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| <h3>Method Summary</h3> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/ignite/compute/ComputeTaskContinuousMapper.html#send-java.util.Collection-">send</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>? extends <a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a><span class='angle_bracket'>></span> jobs)</code> |
| <div class="block">Sends collection of jobs to nodes automatically picked by the underlying load balancer.</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/ignite/compute/ComputeTaskContinuousMapper.html#send-org.apache.ignite.compute.ComputeJob-">send</a></span>(<a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a> job)</code> |
| <div class="block">Sends job to a node automatically picked by the underlying load balancer.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/ignite/compute/ComputeTaskContinuousMapper.html#send-org.apache.ignite.compute.ComputeJob-org.apache.ignite.cluster.ClusterNode-">send</a></span>(<a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a> job, |
| <a href="../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> node)</code> |
| <div class="block">Sends given job to a specific grid node.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/ignite/compute/ComputeTaskContinuousMapper.html#send-java.util.Map-">send</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><span class='angle_bracket'><</span>? extends <a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a>,<a href="../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> mappedJobs)</code> |
| <div class="block">Sends collection of grid jobs to assigned nodes.</div> |
| </td> |
| </tr> |
| </table> |
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| </ul> |
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| <h4>send</h4> |
| <pre>void send(<a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a> job, |
| <a href="../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> node) |
| throws <a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Sends given job to a specific grid node.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>job</code> - Job instance to send. If <code>null</code> is passed, exception will be thrown.</dd> |
| <dd><code>node</code> - Grid node. If <code>null</code> is passed, exception will be thrown.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If job can not be processed.</dd> |
| </dl> |
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| <h4>send</h4> |
| <pre>void send(<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><span class='angle_bracket'><</span>? extends <a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a>,<a href="../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a><span class='angle_bracket'>></span> mappedJobs) |
| throws <a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Sends collection of grid jobs to assigned nodes.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>mappedJobs</code> - Map of grid jobs assigned to grid node. If <code>null</code> |
| or empty list is passed, exception will be thrown.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If job can not be processed.</dd> |
| </dl> |
| </li> |
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| <a name="send-org.apache.ignite.compute.ComputeJob-"> |
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| <h4>send</h4> |
| <pre>void send(<a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a> job) |
| throws <a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Sends job to a node automatically picked by the underlying load balancer.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>job</code> - Job instance to send. If <code>null</code> is passed, exception will be thrown.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If job can not be processed.</dd> |
| </dl> |
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| <pre>void send(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>? extends <a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute">ComputeJob</a><span class='angle_bracket'>></span> jobs) |
| throws <a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Sends collection of jobs to nodes automatically picked by the underlying load balancer.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>jobs</code> - Collection of grid job instances. If <code>null</code> or empty |
| list is passed, exception will be thrown.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If job can not be processed.</dd> |
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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://ignite.apache.org"><nobr>2022 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> </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>Ignite Database and Caching Platform</b> </td> <td>: ver. <strong>2.12.0</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: January 10 2022 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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