/**
* Implements SearchQueueIteratorAbstract::valid().
*
* Fetches an item that is scheduled for indexing, populates a message
* object that can be sent to the index queue.
*
* We only have to check the timeout because the document limit should have
* been taken care of in the SearchCollectionAbstract::fetchScheduledItems()
* method.
*/
public function valid()
{
$log = $this->_agent->getLogger();
$context = array('collection' => $this->_collection->getId());
if (!$this->timedOut()) {
list(, $item) = each($this->_scheduledItems);
if ($item !== null) {
// Build queue message and store it in a class property.
$message = $this->_agent->getQueue()->newMessage();
$message->setCollection($this->_collection);
$this->_collection->buildQueueMessage($message, $item);
$this->_currentMessage = $message;
// Log a debug message.
$context['item'] = $message->getBody();
$log->debug('Fetched item scheduled for indexing', $context);
return true;
}
} else {
$context['timeout'] = $this->_agent->getTimeout();
$log->info('Fetching operation timed out', $context);
}
return false;
}
