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Access to variable via EL ?
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reply from <a href="http://community.jboss.org/people/newbeewan">Jaber C. Mourad</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/546401#546401">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>My need seems to be pretty simple !</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>First :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I'have a task, owned by a user.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>At the end of the task, I want to record the userid of the owner into a process variable using :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java"><font color="navy"><b>public</b></font> <font color="navy"><b>class</b></font> TaskAssigneeEventListener <font color="navy"><b>implements</b></font> EventListener <font color="navy">{</font>
 
    ...
 
    @Override
    <font color="navy"><b>public</b></font> <font color="navy"><b>void</b></font> notify(EventListenerExecution execution) <font color="navy"><b>throws</b></font> Exception <font color="navy">{</font>
        TaskService taskService = processEngine.getTaskService();
        Task task = taskService.createTaskQuery().processInstanceId(execution.getProcessInstance().getId()).uniqueResult();
        <font color="navy"><b>if</b></font> (task == <font color="navy"><b>null</b></font>) <font color="navy">{</font>
            logger.warn(<font color="red">"No task found for ProcessInstance {}"</font>, execution.getProcessInstance().getId());
        <font color="navy">}</font> <font color="navy"><b>else</b></font> <font color="navy">{</font>
            logger.trace(<font color="red">"task name {} ; assignee "</font>, task.getName(),task.getAssignee());
            execution.createVariable(<font color="red">"MyLastTaskAssignee"</font>, task.getAssignee());
        <font color="navy">}</font>
 
    <font color="navy">}</font>
<font color="navy">}</font>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Second : I want to retreive that value into an assignment handler to assign that task to that user :</p><pre class="jive-pre"><code class="jive-code jive-java"><font color="navy"><b>public</b></font> <font color="navy"><b>class</b></font> MyAssignementHandler <font color="navy"><b>implements</b></font> AssignmentHandler <font color="navy">{</font>
     <font color="darkgreen">//Field I want to inject from my process</font>
      <font color="navy"><b>private</b></font> String previousUserId;
 
      @Override
      <font color="navy"><b>public</b></font> <font color="navy"><b>void</b></font> assign(Assignable assignable, OpenExecution execution) <font color="navy"><b>throws</b></font> Exception <font color="navy">{</font>
            logger.trace(<font color="red">"Value of previousUserId {} "</font>, previousUserId);
            <font color="navy"><b>if</b></font> (previousUserId != <font color="navy"><b>null</b></font>) <font color="navy">{</font>
                  assignable.setAssignee(previousUserId);
            <font color="navy">}</font> <font color="navy"><b>else</b></font> <font color="navy">{</font>
                  logger.warn(<font color="red">"No assignee from the last task !!"</font>);
            <font color="navy">}</font>
      <font color="navy">}</font>
<font color="navy">}</font>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>My tasks :</p><pre class="jive-pre"><code class="jive-code jive-xml"><span class="jive-xml-tag"><task assignee="john" g="174,75,92,52" name="taskUser"></span>
        <span class="jive-xml-tag"><on event="end"></span>
            <span class="jive-xml-tag"><event-listener expr="#{taskAssigneeEventListener}"></span>
            <span class="jive-xml-tag"></event-listener></span>
        <span class="jive-xml-tag"></on></span>
        <span class="jive-xml-tag"><transition name="to taskManager" to="taskManager" g="-126,-24" /></span>
    <span class="jive-xml-tag"></task></span>
    <span class="jive-xml-tag"><task g="337,173,92,52" name="taskManager"></span>
        <span class="jive-xml-tag"><assignment-handler expr="#{myAssignementHandler}"></span>
            <span class="jive-xml-tag"><field name="previousUserId"></span>
                  <span class="jive-xml-tag"><object expr="#{variables['MyLastTaskAssignee'}"/></span>
            <span class="jive-xml-tag"></field></span>
        <span class="jive-xml-tag"></assignment-handler></span>
        <span class="jive-xml-tag"><transition name="to end1" to="end1" g="-65,-24" /></span>
    <span class="jive-xml-tag"></task></span>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Is it better to understand my need ?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Regards</p></div>
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<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/546401#546401">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in jBPM at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034">Community</a></p>
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