Adds a variable that an (input) node is waiting for.
| public addWaitingFor ( ezcWorkflowNode $node, string $variableName, ezcWorkflowCondition $condition ) | ||
| $node | ezcWorkflowNode | |
| $variableName | string | |
| $condition | ezcWorkflowCondition | |
/**
* 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;
}
}