/**
* This method selects all DataTables that have the name $name over the period.
* It calls the appropriate methods that sum all these tables together.
* The resulting DataTable is returned.
*
* @param string $name
* @param array $invalidSummedColumnNameToRenamedName columns in the array (old name, new name) to be renamed as the sum operation is not valid on them (eg. nb_uniq_visitors->sum_daily_nb_uniq_visitors)
* @param array $columnAggregationOperations Operations for aggregating columns, @see Piwik_DataTable_Row::sumRow()
* @return Piwik_DataTable
*/
protected function getRecordDataTableSum($name, $invalidSummedColumnNameToRenamedName, &$columnAggregationOperations = null)
{
$table = new Piwik_DataTable();
if (is_array($columnAggregationOperations)) {
$table->setColumnAggregationOperations($columnAggregationOperations);
}
foreach ($this->archives as $archive) {
$archive->preFetchBlob($name);
$datatableToSum = $archive->getDataTable($name);
$archive->loadSubDataTables($name, $datatableToSum);
$table->addDataTable($datatableToSum);
$archive->freeBlob($name);
}
if (is_null($invalidSummedColumnNameToRenamedName)) {
$invalidSummedColumnNameToRenamedName = self::$invalidSummedColumnNameToRenamedName;
}
foreach ($invalidSummedColumnNameToRenamedName as $oldName => $newName) {
$table->renameColumn($oldName, $newName);
}
return $table;
}
