/**
* Short description of method setParallelActivities
*
* @access public
* @author Joel Bout, <*****@*****.**>
* @param Resource connectorInstance
* @param array newActivitiesArray
* @return boolean
*/
public function setParallelActivities(core_kernel_classes_Resource $connectorInstance, $newActivitiesArray = array())
{
$returnValue = (bool) false;
$this->setConnectorType($connectorInstance, new core_kernel_classes_Resource(INSTANCE_TYPEOFCONNECTORS_PARALLEL));
$propNextActivities = new core_kernel_classes_Property(PROPERTY_STEP_NEXT);
$cardinalityService = wfEngine_models_classes_ActivityCardinalityService::singleton();
//remove old property values:
$nextActivitiesCollection = $connectorInstance->getPropertyValuesCollection($propNextActivities);
$oldSplitVariablesByActivity = array();
foreach ($nextActivitiesCollection->getIterator() as $activityMultiplicityResource) {
if ($cardinalityService->isCardinality($activityMultiplicityResource)) {
//record the old split variables values in case it is needed (TODO: optimize this process)
$activity = $cardinalityService->getDestination($activityMultiplicityResource);
$splitVars = $cardinalityService->getSplitVariables($activityMultiplicityResource);
if (!empty($splitVars)) {
$oldSplitVariablesByActivity[$activity->getUri()] = $splitVars;
}
//delete it
$activityMultiplicityResource->delete();
}
}
$returnValue = $connectorInstance->removePropertyValues($propNextActivities);
//finally, set the next activities values to the parallel connector:
$joinConnector = null;
$processFlow = new wfEngine_models_classes_ProcessFlow();
$i = 0;
foreach ($newActivitiesArray as $activityUri => $count) {
$activity = new core_kernel_classes_Resource($activityUri);
//set multiplicity to the parallel connector:
$cardinality = $cardinalityService->createCardinality($activity, $count);
if (isset($oldSplitVariablesByActivity[$activityUri])) {
if (!empty($oldSplitVariablesByActivity[$activityUri]) && !$cardinalityService->editSplitVariables($cardinality, $oldSplitVariablesByActivity[$activityUri])) {
throw new Exception('cannot set split variables to new cardinality resources');
}
}
$returnValue = $connectorInstance->setPropertyValue($propNextActivities, $cardinality);
//set multiplicity to the merge connector:
$previousActvityUri = '';
if ($i == 0) {
//use the ProcessFlow service to find if a merge connector exists for the current parallel connector:
//do it only once:
$processFlow->resetCheckedResources();
$joinConnector = $processFlow->findJoinFromActivityForward($activity);
if (!is_null($joinConnector)) {
//if it exists, we erase all previous activities:
//the previous acitivites must be related to the *exact* same activity-multiplicity objects as the parallel but not necessarily the same (e.g. parallel thread with more than 1 acitivty)
//we suppose that the previous activities of the found merge connector come *exactly* from the thread generated by its parallel connector (condition for a valid process design)
$prevActivities = wfEngine_models_classes_ConnectorService::singleton()->getPreviousActivities($joinConnector);
foreach ($prevActivities as $activityMultiplicityResource) {
if ($cardinalityService->isCardinality($activityMultiplicityResource)) {
$activityMultiplicityResource->delete();
}
$prevActivities->removePropertyValues(new core_kernel_classes_Property(PROPERTY_STEP_NEXT));
}
/*
$prevActivitiesCollection = $joinConnector->getPropertyValuesCollection($propPreviousActivities);
foreach ($prevActivitiesCollection->getIterator() as $activityMultiplicityResource){
if($cardinalityService->isCardinality($activityMultiplicityResource)){
$activityMultiplicityResource->delete();
}
}
$returnValue = $joinConnector->removePropertyValues($propPreviousActivities);
*/
}
$toPop = $processFlow->getCheckedActivities();
$previousActvityUri = array_pop($toPop);
}
if (!is_null($joinConnector)) {
if (empty($previousActvityUri)) {
//if there are more than 1 activity in the newActivitiesArray:
$processFlow->resetCheckedResources();
$joinConnector = $processFlow->findJoinFromActivityForward($activity);
$previousActvityUri = array_pop($processFlow->getCheckedActivities());
}
if (!empty($previousActvityUri)) {
$previous = new core_kernel_classes_Resource($previousActvityUri);
$cardinality = $cardinalityService->createCardinality($joinConnector, $count);
$returnValue = $previous->setPropertyValues(new core_kernel_classes_Property(PROPERTY_STEP_NEXT), $cardinality);
/*
$multiplicity = $cardinalityService->createCardinality($previous, $count);
$returnValue = $joinConnector->setPropertyValue($propPreviousActivities, $multiplicity);
*/
}
}
$i++;
}
return (bool) $returnValue;
}
/**
* Short description of method createJoin
*
* @access public
* @author Joel Bout, <*****@*****.**>
* @param array sources
* @param Resource destination
* @return core_kernel_classes_Resource
*/
public function createJoin($sources, core_kernel_classes_Resource $destination)
{
$returnValue = null;
foreach ($sources as $step) {
$followings = $step->getPropertyValues(new core_kernel_classes_Property(PROPERTY_STEP_NEXT));
if (count($followings) > 0) {
foreach ($followings as $followingUri) {
$following = new core_kernel_classes_Resource($followingUri);
if ($this->isConnector($following)) {
$this->delete($following);
} else {
throw new common_Exception('Step ' . $step->getUri() . ' already has a non-connector attached');
}
}
}
}
$first = current($sources);
$returnValue = $this->createConnector($first, "c_" . $destination->getLabel());
common_Logger::d('spawned connector ' . $returnValue->getUri());
$this->setConnectorType($returnValue, new core_kernel_classes_Resource(INSTANCE_TYPEOFCONNECTORS_JOIN));
$first->removePropertyValues(new core_kernel_classes_Property(PROPERTY_STEP_NEXT));
$returnValue->setPropertyValue(new core_kernel_classes_Property(PROPERTY_STEP_NEXT), $destination);
common_Logger::d('removed previous connections, added next');
foreach ($sources as $activity) {
$flow = new wfEngine_models_classes_ProcessFlow();
$multiplicity = $flow->getCardinality($activity);
$cardinality = wfEngine_models_classes_ActivityCardinalityService::singleton()->createCardinality($returnValue, $multiplicity);
$activity->setPropertyValue(new core_kernel_classes_Property(PROPERTY_STEP_NEXT), $cardinality);
common_Logger::d('spawned cardinality ' . $cardinality->getUri() . ' with value ' . $multiplicity);
}
return $returnValue;
}
/**
* Get the estimated number of execution of this activity
*
* @access public
* @author Somsack Sipasseuth, <*****@*****.**>
* @param Resource activity
* @return int
*/
public function getEstimatedExecutionCount(core_kernel_classes_Resource $activity)
{
$returnValue = (int) 0;
$processFlow = new wfEngine_models_classes_ProcessFlow();
$parallelConnector = $processFlow->findParallelFromActivityBackward($activity);
if (!is_null($parallelConnector)) {
$returnValue = count($parallelConnector->getPropertyValues(new core_kernel_classes_Property(PROPERTY_STEP_NEXT)));
} else {
$returnValue = 1;
}
return (int) $returnValue;
}
