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<a href="https://community.jboss.org/index.jspa" style="text-decoration: none; color: #E1E1E1">JBoss Community</a></h1>
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Human Task Module Refactoring
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created by <a href="https://community.jboss.org/people/salaboy21">Mauricio Salatino</a> in <i>jBPM</i> - <a href="https://community.jboss.org/docs/DOC-18789">View the full document</a>
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<div class="jive-rendered-content"><p>This document aims to explain how the human task module should look after applying some refactorings which were the results of several experiments.</p><p>You can more about this experiments here: <a class="jive-link-external-small" href="https://github.com/Salaboy/human-task-poc-proposal">https://github.com/Salaboy/human-task-poc-proposal</a></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The following sections describe how the module will look like after the refactorings</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><h1>APIs</h1><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><h1>Services Working Together</h1><p>The following image shows how the interactions with the human task module will happen. The diagram shows the interfaces and implementations required to interact with a TaskInstance</p><p><a href="https://community.jboss.org/servlet/JiveServlet/showImage/102-18789-1-19050/TaskInstanceServiceSimplified.png"><span> https://community.jboss.org/servlet/JiveServlet/downloadImage/102-18789-1-19050/450-252/TaskInstanceServiceSimplified.png </span></a></p><p>The previous figure shows all the components interacting when we want to interact with a task instance that was already created. </p><p>So let's say for example that we want to start a task. From the client perspective he/she can use the <span style="font-family: Consolas, 'Liberation Mono', Courier, monospace; font-size: 12px; text-align: -webkit-auto; background-color: #ffffff;">TaskServiceEntryPoint</span> to </p><p>start the task. This <span style="font-family: Consolas, 'Liberation Mono', Courier, monospace; font-size: 12px; text-align: -webkit-auto; background-color: #ffffff;">TaskServiceEntryPoint</span> will delegate the calls to the different service implementations. In this case if we are </p><p>starting a task the TaskInstanceService implementation will delegate the action to the LifeCycleManager. As you can see</p><p>the LifeCycleManager, no matter the implementation is being decorated by an UserGroupDecorator which in charge of handling the</p><p>resolution of the identities associated with the operation. The LifeCycleManager is also an Event Producer, which means that is in charge</p><p>of generating events to communicate to the external world the LifeCycle changes of each task. We can then attach external listeners to </p><p>Observer these events </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><h1>Integration with the Outside World</h1></div>
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