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reply from <a href="http://community.jboss.org/people/WalterJS">Walter Seymore</a> in <i>jBPM Development</i> - <a href="http://community.jboss.org/message/546964#546964">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi Alejandro,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><blockquote class="jive-quote"><p>Alejandro Guizar wrote:</p><br/>The <strong>expr</strong> attribute in the transition that leaves from <strong>foreach </strong>is not a completion condition. It is more of a <em>creation </em>condition. If the condition is not met for a particular element of the collection, the child execution that would correspond to that element is not created.<p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In JBPM-2414 you suggested a completion condition be added to <strong>join</strong>. As Maciej noted, this is already provided by the  <a class="jive-link-external-small" href="http://docs.jboss.com/jbpm/v4/userguide/html_single/#concurrency">multiplicity</a> attribute. As part of his work on <a class="jive-link-external-small" href="https://jira.jboss.org/browse/JBPM-2720">JBPM-2720</a> he made multiplicity accept expressions in addition to literal numbers.</p><br/></blockquote><p>I also thought the expression was a completion condition. Are you saying that the multiplicity attribute can be used in the same way? Let's say a rule execution determines that it should complete, would it be possible to write a multiplicity expression like this (pseudo code) "#{rule.result ? numberCompleted : items.size}"?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks</p><p>Walter</p></div>
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