* @return int number of affected rows
*/
public function aggregate($uuid = null, $level = 'day', $mode = 'full', $period = null)
{
// validate settings
if (!in_array($mode, array('full', 'delta'))) {
throw new \RuntimeException('Unsupported aggregation mode ' . $mode);
}
if (!$this->isValidAggregationLevel($level)) {
throw new \RuntimeException('Unsupported aggregation level ' . $level);
}
// get channel definition to select correct aggregation function
$sqlParameters = array('channel');
$sql = 'SELECT id, uuid, type FROM entities WHERE class = ?';
if ($uuid) {
$sqlParameters[] = $uuid;
$sql .= ' AND uuid = ?';
}
$rows = 0;
// aggregate each channel
foreach ($this->conn->fetchAll($sql, $sqlParameters) as $row) {
$entity = Definition\EntityDefinition::get($row['type']);
$interpreter = $entity->getInterpreter();
$rows += $this->aggregateChannel($row['id'], $interpreter, $mode, $level, $period);
}
return $rows;
}
}
// initialize static variables
Aggregation::init();
