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Task Service Issue
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created by <a href="https://community.jboss.org/people/bhaskarven">Bhaskaran Venkataraman</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/739284#739284">View the full discussion</a>
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<div class="jive-rendered-content"><p>I am trying to understand the Human Task Service through an example. I found useful information regarding</p><p>the communication between the Task Client and the Task Service in the User Guide.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><a class="jive-link-anchor-small"><span class="java_type">TaskClient</span><span class="java_plain"> client </span><span class="java_operator">=</span><span class="java_plain"> </span><span class="java_keyword">new</span><span class="java_plain"> </span><span class="java_type">TaskClient</span><span class="java_separator">(</span><span class="java_keyword">new</span><span class="java_plain"> </span><span class="java_type">MinaTaskClientConnector</span><span class="java_separator">(</span><span class="java_literal">"client 1"</span><span class="java_separator">,</span><br/><br/><span class="java_plain">    </span><span class="java_keyword">new</span><span class="java_plain"> </span><span class="java_type">MinaTaskClientHandler</span><span class="java_separator">(</span><span class="java_type">SystemEventListenerFactory</span><span class="java_separator">.</span><span class="java_plain">getSystemEventListener</span><span class="java_separator">())));</span><br/><br/><span class="java_plain">client</span><span class="java_separator">.</span><span class="java_plain">connect</span><span class="java_separator">(</span><span class="java_literal">"127.0.0.1"</span><span class="java_separator">,</span><span class="java_plain"> </span><span class="java_literal">9123</span><span class="java_separator">);</span><br/><br/><br/><span class="java_operator">//</span><span class="java_plain"> adding a task</span><br/><br/><span class="java_type">BlockingAddTaskResponseHandler</span><span class="java_plain"> addTaskResponseHandler </span><span class="java_operator">=</span><span class="java_plain"> </span><span class="java_keyword">new</span><span class="java_plain"> </span><span class="java_type">BlockingAddTaskResponseHandler</span><span class="java_separator">();</span><br/><br/><span class="java_type">Task</span><span class="java_plain"> task </span><span class="java_operator">=</span><span class="java_plain"> </span><span class="java_separator">...;</span><span class="java_plain"> </span><br/><br/><span class="java_plain">client</span><span class="java_separator">.</span><span class="java_plain">addTask</span><span class="java_separator">(</span><span class="java_plain"> task</span><span class="java_separator">,</span><span class="java_plain"> </span><span class="java_literal">null</span><span class="java_separator">,</span><span class="java_plain"> addTaskResponseHandler </span><span class="java_separator">);</span><br/><br/><span class="java_type">long</span><span class="java_plain"> taskId </span><span class="java_operator">=</span><span class="java_plain"> addTaskResponseHandler</span><span class="java_separator">.</span><span class="java_plain">getTaskId</span><span class="java_separator">();</span><br/><br/><span class="java_plain">        </span><br/><br/><span class="java_operator">//</span><span class="java_plain"> getting tasks </span><span class="java_keyword">for</span><span class="java_plain"> user </span><span class="java_literal">"bobba"</span><br/><br/><span class="java_type">BlockingTaskSummaryResponseHandler</span><span class="java_plain"> taskSummaryResponseHandler </span><span class="java_operator">=</span><br/><br/><span class="java_plain">    </span><span class="java_keyword">new</span><span class="java_plain"> </span><span class="java_type">BlockingTaskSummaryResponseHandler</span><span class="java_separator">();</span><br/><br/><span class="java_plain">client</span><span class="java_separator">.</span><span class="java_plain">getTasksAssignedAsPotentialOwner</span><span class="java_separator">(</span><span class="java_literal">"bobba"</span><span class="java_separator">,</span><span class="java_plain"> </span><span class="java_literal">"en-UK"</span><span class="java_separator">,</span><span class="java_plain"> taskSummaryResponseHandler</span><span class="java_separator">);</span><br/><br/><span class="java_type">List</span><span class="java_operator"><</span><span class="java_type">TaskSummary</span><span class="java_operator">></span><span class="java_plain"> tasks </span><span class="java_operator">=</span><span class="java_plain"> taskSummaryResponseHandler</span><span class="java_separator">.</span><span class="java_plain">getResults</span><span class="java_separator">();</span><br/><br/><br/><span class="java_operator">//</span><span class="java_plain"> starting a task</span><br/><br/><span class="java_type">BlockingTaskOperationResponseHandler</span><span class="java_plain"> responseHandler </span><span class="java_operator">=</span><br/><br/><span class="java_plain">    </span><span class="java_keyword">new</span><span class="java_plain"> </span><span class="java_type">BlockingTaskOperationResponseHandler</span><span class="java_separator">();</span><br/><br/><span class="java_plain">client</span><span class="java_separator">.</span><span class="java_plain">start</span><span class="java_separator">(</span><span class="java_plain"> taskId</span><span class="java_separator">,</span><span class="java_plain"> </span><span class="java_literal">"bobba"</span><span class="java_separator">,</span><span class="java_plain"> responseHandler </span><span class="java_separator">);</span><br/><br/><span class="java_plain">responseHandler</span><span class="java_separator">.</span><span class="java_plain">waitTillDone</span><span class="java_separator">(</span><span class="java_literal">1000</span><span class="java_separator">);</span><span class="java_plain"> </span><br/><br/><br/><span class="java_operator">//</span><span class="java_plain"> completing a task</span><br/><br/><span class="java_plain">responseHandler </span><span class="java_operator">=</span><span class="java_plain"> </span><span class="java_keyword">new</span><span class="java_plain"> </span><span class="java_type">BlockingTaskOperationResponseHandler</span><span class="java_separator">();</span><br/><br/><span class="java_plain">client</span><span class="java_separator">.</span><span class="java_plain">complete</span><span class="java_separator">(</span><span class="java_plain"> taskId</span><span class="java_separator">,</span><span class="java_plain"> </span><span class="java_literal">"bobba"</span><span class="java_separator">.</span><span class="java_plain">getId</span><span class="java_separator">(),</span><span class="java_plain"> </span><span class="java_literal">null</span><span class="java_separator">,</span><span class="java_plain"> responseHandler </span><span class="java_separator">);</span><br/><br/><span class="java_plain">responseHandler</span><span class="java_separator">.</span><span class="java_plain">waitTillDone</span><span class="java_separator">(</span><span class="java_literal">1000</span><span class="java_separator">);</span></a></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span class="java_separator">But in the evaluation sample code there is only a specific type of HumanTaskHandler (HornetQ) registered listening on</span></p><p><span class="java_separator">a particular port and then the process is started. I mean we have not instantiated any Task Client and we are not doing </span></p><p><span class="java_separator">any manual processing of the human tasks. It is not clear what happens behind the scenes.<br/></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span class="java_separator">If we have to use the task client and handle all the actions mentioned above how do we communicate with the</span></p><p><span class="java_separator">JBPM Engine. After the process is started by the engine and when a human task is encountered how does it come to</span></p><p><span class="java_separator">execute our code.</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span class="java_separator">If there is an example to illustrate the sequence it will help.</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span class="java_separator">Thanks for your help.<br/></span></p></div>
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<p style="margin: 0;">Reply to this message by <a href="https://community.jboss.org/message/739284#739284">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in jBPM at <a href="https://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034">Community</a></p>
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