function _batch_append_set

Appends a batch set to a running batch.

Inserts the new set right after the current one to ensure execution order, and stores its operations in a queue. If the current batch has already inserted a new set, additional sets will be inserted after the last inserted set.

Parameters

&$batch: The batch array.

$batch_set: The batch set.

Related topics

File

core/includes/form.inc, line 797

Code

function _batch_append_set(&$batch, $batch_set) {
    $append_after_index = $batch['current_set'];
    $reached_current_set = FALSE;
    foreach ($batch['sets'] as $index => $set) {
        // As the indexes are not ordered numerically we need to first reach the
        // index of the current set and then search for the proper place to append
        // the new batch set.
        if (!$reached_current_set) {
            if ($index == $batch['current_set']) {
                $reached_current_set = TRUE;
            }
            continue;
        }
        if ($index > $append_after_index) {
            if (isset($set['appended_after_index'])) {
                $append_after_index = $index;
            }
            else {
                break;
            }
        }
    }
    $batch_set['appended_after_index'] = $append_after_index;
    // Iterate by reference over the existing batch sets and assign them by
    // reference in the new batch sets array in order not to break a retrieved
    // reference to the current set. Among other places a reference to the current
    // set is being retrieved in _batch_process(). Additionally, we have to
    // preserve the original indexes, as they are used to generate the queue name
    // of each batch set, otherwise the operations of the new batch set will be
    // queued in the queue of a previous batch set.
    // @see _batch_populate_queue().
    $new_sets = [];
    foreach ($batch['sets'] as $index => &$set) {
        $new_sets[$index] =& $set;
        if ($index == $append_after_index) {
            $new_set_index = count($batch['sets']);
            $new_sets[$new_set_index] = $batch_set;
        }
    }
    $batch['sets'] = $new_sets;
    _batch_populate_queue($batch, $new_set_index);
}