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add check for cycles in workflow

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This commit is contained in:
Uwe Steinmann 2016-11-18 08:38:46 +01:00
parent 2601173695
commit 3459f18c72
1 changed files with 29 additions and 0 deletions
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29
SeedDMS_Core/Core/inc.ClassWorkflow.php
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@ -301,6 +301,35 @@ class SeedDMS_Core_Workflow { /* {{{ */
return true;
} /* }}} */
private function penetrate($laststates) {
$state = end($laststates);
$transitions = $this->getNextTransitions($state);
foreach($transitions as $transition) {
$nextstate = $transition->getNextState();
/* Check if nextstate is already in list of previous states */
foreach($laststates as $laststate) {
if($laststate->getID() == $nextstate->getID())
return array_merge($laststates, array($nextstate));
}
if($ret = $this->penetrate(array_merge($laststates, array($nextstate))))
return $ret;
}
return false;
}
/**
* Check if workflow contains cycles
*
* @return boolean true if workflow contains cycles, otherwise false
*/
function check() { /* {{{ */
$db = $this->_dms->getDB();
$initstate = $this->getInitState();
return $this->penetrate(array($initstate));
} /* }}} */
/**
* Remove the workflow and all its transitions
* Do not remove actions and states of the workflow