/**
* Invoke
*
* @return string
*/
public function invoke()
{
SCA::$logger->log('Entering');
//component_name, string reference_name, string method_name, array arguments
// Reflection::export(new ReflectionObject($this->mediator));
try {
// get the arguments from the mediator
$arg_array = $this->mediator->getArgArray();
if ($this->class_name != null) {
SCA::$logger->log('Attempt to create a service');
$this->service = new $this->class_name();
$reflection = new ReflectionObject($this->service);
$reader = new SCA_CommentReader($reflection->getDocComment());
// if it's an SCA service recreate the instance
// with all the references filled in
if ($reader->isService()) {
SCA::$logger->log('Create SCA service');
$this->service = SCA::createInstanceAndFillInReferences($this->class_name);
} else {
SCA::$logger->log('Create PHP object');
}
}
//invoke the function
if ($this->service != null) {
SCA::$logger->log('Invoke service as PHP object');
// it's a class with a member function
// so call it. Even if it's an SCA service
// we are not relying of SCA service bindings
// at this point. We just want the references
// that will have been set up on initialization
// above.
$return = call_user_func_array(array($this->service, $this->method_name), $arg_array);
} else {
if (function_exists($this->method_name)) {
SCA::$logger->log('Invoke service as PHP function');
// it's not just a script so turn
// off output buffering and then call
// the function
ob_end_clean();
$return = call_user_func_array($this->method_name, $arg_array);
} else {
SCA::$logger->log('Invoke service as PHP script');
// the script will have already executed
// because it was included so all we have to
// do here is return the contents of the
// output buffer.
$return = ob_get_contents();
ob_end_clean();
}
}
} catch (Exception $e) {
SCA::$logger->log('Caught ' . $e->getMessage());
throw $e;
}
SCA::$logger->log('Exiting');
return $return;
}
