/**
* Visualizes the current state of the workflow execution.
*
* @param ezcWorkflowExecution $execution
*/
protected function visualize(ezcWorkflowExecution $execution)
{
$activatedNodes = array();
foreach ($execution->getActivatedNodes() as $node) {
$activatedNodes[] = $node->getId();
}
if ($this->options['includeVariables']) {
$variables = $execution->getVariables();
} else {
$variables = array();
}
$visitor = new ezcWorkflowVisitorVisualization();
$visitor->options['highlightedNodes'] = $activatedNodes;
$visitor->options['workflowVariables'] = $variables;
$execution->workflow->accept($visitor);
file_put_contents(sprintf('%s%s%s_%03d_%03d.dot', $this->options['directory'], DIRECTORY_SEPARATOR, $execution->workflow->name, $execution->getId(), ++$this->fileCounter), $visitor);
}
/**
* Gets a rendered HTML form
*/
public function get_form(ezcWorkflowExecution $execution)
{
$list_of_variables = $execution->getVariables();
if (array_key_exists('review_form', $list_of_variables)) {
$db_form = new midgardmvc_ui_forms_form($list_of_variables['review_form']);
$form = midgardmvc_ui_forms_generator::get_by_form($db_form, false);
$form->set_readonly(false);
if ($this->request->isset_data_item('redirect_link')) {
$redirect_link = $this->request->get_data_item('redirect_link');
} else {
if (array_key_exists('HTTP_REFERER', $_SERVER)) {
$redirect_link = $_SERVER['HTTP_REFERER'];
} else {
$redirect_link = '';
}
}
$form->set_cancel(null, $this->mvc->i18n->get('cancel', 'midgardmvc_helper_forms'), $redirect_link);
// add a hidden input with the recirect link
// where we go upon successful submit
$field = $form->add_field('redirect_link', 'text');
$field->set_value($redirect_link);
$widget = $field->set_widget('hidden');
// add a hidden input with the execution guid
$field = $form->add_field('execution', 'text');
$field->set_value($execution->guid);
$widget = $field->set_widget('hidden');
return array('db_form' => $db_form, 'form' => $form);
}
return null;
}
/**
* Evaluates all the conditions, checks the constraints and activates any nodes that have
* passed through both checks and condition evaluation.
*
* @param ezcWorkflowExecution $execution
* @return boolean true when the node finished execution,
* and false otherwise
* @ignore
*/
public function execute(ezcWorkflowExecution $execution)
{
$keys = array_keys($this->outNodes);
$numKeys = count($keys);
$nodesToStart = array();
$numActivatedConditionalOutNodes = 0;
if ($this->maxActivatedConditionalOutNodes !== false) {
$maxActivatedConditionalOutNodes = $this->maxActivatedConditionalOutNodes;
} else {
$maxActivatedConditionalOutNodes = $numKeys;
}
for ($i = 0; $i < $numKeys && $numActivatedConditionalOutNodes <= $maxActivatedConditionalOutNodes; $i++) {
if (isset($this->configuration['condition'][$keys[$i]])) {
// Conditional outgoing node.
if ($this->configuration['condition'][$keys[$i]]->evaluate($execution->getVariables())) {
$nodesToStart[] = $this->outNodes[$keys[$i]];
$numActivatedConditionalOutNodes++;
}
} else {
// Unconditional outgoing node.
$nodesToStart[] = $this->outNodes[$keys[$i]];
}
}
if ($this->minActivatedConditionalOutNodes !== false && $numActivatedConditionalOutNodes < $this->minActivatedConditionalOutNodes) {
throw new ezcWorkflowExecutionException('Node activates less conditional outgoing nodes than required.');
}
return $this->activateOutgoingNodes($execution, $nodesToStart);
}
/**
* Executes this node.
*
* @param ezcWorkflowExecution $execution
* @return boolean true when the node finished execution,
* and false otherwise
* @ignore
*/
public function execute(ezcWorkflowExecution $execution)
{
$variables = $execution->getVariables();
$canExecute = true;
$errors = array();
foreach ($this->configuration as $variable => $condition) {
if (!isset($variables[$variable])) {
$execution->addWaitingFor($this, $variable, $condition);
$canExecute = false;
} else {
if (!$condition->evaluate($variables[$variable])) {
$errors[$variable] = (string) $condition;
}
}
}
if (!empty($errors)) {
throw new ezcWorkflowInvalidInputException($errors);
}
if ($canExecute) {
$this->activateNode($execution, $this->outNodes[0]);
return parent::execute($execution);
} else {
return false;
}
}
