/**
* Common filters for Page URLs and Page Titles
*
* @param DataTable|DataTable\Simple|DataTable\Map $dataTable
*/
protected function filterPageDatatable($dataTable)
{
$columnsToRemove = array('bounce_rate');
$dataTable->queueFilter('ColumnDelete', array($columnsToRemove));
// Average time on page = total time on page / number visits on that page
$dataTable->queueFilter('ColumnCallbackAddColumnQuotient', array('avg_time_on_page', 'sum_time_spent', 'nb_visits', 0));
// Bounce rate = single page visits on this page / visits started on this page
$dataTable->queueFilter('ColumnCallbackAddColumnPercentage', array('bounce_rate', 'entry_bounce_count', 'entry_nb_visits', 0));
// % Exit = Number of visits that finished on this page / visits on this page
$dataTable->queueFilter('ColumnCallbackAddColumnPercentage', array('exit_rate', 'exit_nb_visits', 'nb_visits', 0));
// Handle performance analytics
$hasTimeGeneration = array_sum($dataTable->getColumn(Metrics::INDEX_PAGE_SUM_TIME_GENERATION)) > 0;
if ($hasTimeGeneration) {
// Average generation time = total generation time / number of pageviews
$precisionAvgTimeGeneration = 3;
$dataTable->queueFilter('ColumnCallbackAddColumnQuotient', array('avg_time_generation', 'sum_time_generation', 'nb_hits_with_time_generation', $precisionAvgTimeGeneration));
$dataTable->queueFilter('ColumnDelete', array(array('sum_time_generation')));
} else {
// No generation time: remove it from the API output and add it to empty_columns metadata, so that
// the columns can also be removed from the view
$dataTable->filter('ColumnDelete', array(array(Metrics::INDEX_PAGE_SUM_TIME_GENERATION, Metrics::INDEX_PAGE_NB_HITS_WITH_TIME_GENERATION, Metrics::INDEX_PAGE_MIN_TIME_GENERATION, Metrics::INDEX_PAGE_MAX_TIME_GENERATION)));
if ($dataTable instanceof DataTable) {
$emptyColumns = $dataTable->getMetadata(DataTable::EMPTY_COLUMNS_METADATA_NAME);
if (!is_array($emptyColumns)) {
$emptyColumns = array();
}
$emptyColumns[] = 'sum_time_generation';
$emptyColumns[] = 'avg_time_generation';
$emptyColumns[] = 'min_time_generation';
$emptyColumns[] = 'max_time_generation';
$dataTable->setMetadata(DataTable::EMPTY_COLUMNS_METADATA_NAME, $emptyColumns);
}
}
}