68 lines
1.9 KiB
PHP
68 lines
1.9 KiB
PHP
<?php
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/**
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* Piwik - Open source web analytics
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*
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* @link http://piwik.org
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* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
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*
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*/
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namespace Piwik\DataTable\Row;
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use Piwik\DataTable\Manager;
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use Piwik\DataTable;
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use Piwik\DataTable\Row;
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/**
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* A special row whose column values are the aggregate of the row's subtable.
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*
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* This class creates sets its own columns to the sum of each row in the row's subtable.
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*
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* Non-numeric columns are bypassed during summation and do not appear in this
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* rows columns.
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*
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* See {@link Piwik\DataTable\Row::sumRow()} for more information on the algorithm.
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*
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*/
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class DataTableSummaryRow extends Row
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{
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/**
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* Constructor.
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*
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* @param DataTable|null $subTable The subtable of this row. This parameter is mostly for
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* convenience. If set, its rows will be summed to this one,
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* but it will not be set as this row's subtable (so
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* getSubtable() will return false).
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*/
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public function __construct($subTable = null)
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{
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parent::__construct();
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if ($subTable !== null) {
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$this->sumTable($subTable);
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}
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}
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/**
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* Reset this row to an empty one and sums the associated subtable again.
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*/
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public function recalculate()
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{
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$id = $this->getIdSubDataTable();
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if ($id !== null) {
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$subTable = Manager::getInstance()->getTable($id);
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$this->sumTable($subTable);
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}
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}
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/**
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* Sums a tables row with this one.
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*
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* @param DataTable $table
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*/
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private function sumTable($table)
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{
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foreach ($table->getRows() as $row) {
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$this->sumRow($row, $enableCopyMetadata = false, $table->getMetadata(DataTable::COLUMN_AGGREGATION_OPS_METADATA_NAME));
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}
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}
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}
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