function StatementPrefetchIterator::fetch

Overrides StatementInterface::fetch

File

core/lib/Drupal/Core/Database/StatementPrefetchIterator.php, line 230

Class

StatementPrefetchIterator

An implementation of StatementInterface that prefetches all data.

Namespace

Code

public function fetch($fetch_style = NULL, $cursor_orientation = \PDO::FETCH_ORI_NEXT, $cursor_offset = NULL) {
    $currentKey = $this->getResultsetCurrentRowIndex();
    // We can remove the current record from the prefetched data, before
    // moving to the next record.
    unset($this->data[$currentKey]);
    $currentKey++;
    if (!isset($this->data[$currentKey])) {
        $this->markResultsetFetchingComplete();
        return FALSE;
    }
    // Now, format the next prefetched record according to the required fetch
    // style.
    $rowAssoc = $this->data[$currentKey];
    $mode = $fetch_style ?? $this->defaultFetchStyle;
    $row = match ($mode) {    \PDO::FETCH_ASSOC => $rowAssoc,
        \PDO::FETCH_CLASS, \PDO::FETCH_CLASS | \PDO::FETCH_PROPS_LATE => $this->assocToClass($rowAssoc, $this->fetchOptions['class'], $this->fetchOptions['constructor_args']),
        \PDO::FETCH_COLUMN => $this->assocToColumn($rowAssoc, $this->columnNames, $this->fetchOptions['column']),
        \PDO::FETCH_NUM => $this->assocToNum($rowAssoc),
        \PDO::FETCH_OBJ => $this->assocToObj($rowAssoc),
        default => throw new DatabaseExceptionWrapper('Fetch mode ' . ($this->fetchModeLiterals[$mode] ?? $mode) . ' is not supported. Use supported modes only.'),
    
    };
    $this->setResultsetCurrentRow($row);
    return $row;
}