/**
* See {@link GroupBy}.
*
* @param DataTable $table
*/
public function filter($table)
{
/** @var Row[] $groupByRows */
$groupByRows = array();
$nonGroupByRowIds = array();
foreach ($table->getRowsWithoutSummaryRow() as $rowId => $row) {
$groupByColumnValue = $row->getColumn($this->groupByColumn);
$groupByValue = $groupByColumnValue;
// reduce the group by column of this row
if ($this->reduceFunction) {
$parameters = array_merge(array($groupByColumnValue), $this->parameters);
$groupByValue = call_user_func_array($this->reduceFunction, $parameters);
}
if (!isset($groupByRows[$groupByValue])) {
// if we haven't encountered this group by value before, we mark this row as a
// row to keep, and change the group by column to the reduced value.
$groupByRows[$groupByValue] = $row;
$row->setColumn($this->groupByColumn, $groupByValue);
} else {
// if we have already encountered this group by value, we add this row to the
// row that will be kept, and mark this one for deletion
$groupByRows[$groupByValue]->sumRow($row, $copyMeta = true, $table->getMetadata(DataTable::COLUMN_AGGREGATION_OPS_METADATA_NAME));
$nonGroupByRowIds[] = $rowId;
}
}
if ($this->groupByColumn === 'label') {
$table->setLabelsHaveChanged();
}
// delete the unneeded rows.
$table->deleteRows($nonGroupByRowIds);
}
/**
* See {@link ColumnCallbackReplace}.
*
* @param DataTable $table
*/
public function filter($table)
{
foreach ($table->getRows() as $row) {
$extraColumnParameters = array();
foreach ($this->extraColumnParameters as $columnName) {
$extraColumnParameters[] = $row->getColumn($columnName);
}
foreach ($this->columnsToFilter as $column) {
// when a value is not defined, we set it to zero by default (rather than displaying '-')
$value = $this->getElementToReplace($row, $column);
if ($value === false) {
$value = 0;
}
$parameters = array_merge(array($value), $extraColumnParameters);
if (!is_null($this->functionParameters)) {
$parameters = array_merge($parameters, $this->functionParameters);
}
$newValue = call_user_func_array($this->functionToApply, $parameters);
$this->setElementToReplace($row, $column, $newValue);
$this->filterSubTable($row);
}
}
if (in_array('label', $this->columnsToFilter)) {
// we need to force rebuilding the index
$table->setLabelsHaveChanged();
}
}
