Method batchCopy

/**
 * Batch copy items to a new category or current.
 *
 * @param   integer  $value     The new category.
 * @param   array    $pks       An array of row IDs.
 * @param   array    $contexts  An array of item contexts.
 *
 * @return  array|boolean  An array of new IDs on success, boolean false on failure.
 *
 * @since	1.7
 */
protected function batchCopy($value, $pks, $contexts)
{
    // Initialize re-usable member properties, and re-usable local variables
    $this->initBatch();
    $categoryId = $value;
    if (!$this->checkCategoryId($categoryId)) {
        return false;
    }
    $newIds = array();
    $db = $this->getDbo();
    // Parent exists so let's proceed
    while (!empty($pks)) {
        // Pop the first ID off the stack
        $pk = array_shift($pks);
        $this->table->reset();
        // Check that the row actually exists
        if (!$this->table->load($pk)) {
            if ($error = $this->table->getError()) {
                // Fatal error
                $this->setError($error);
                return false;
            } else {
                // Not fatal error
                $this->setError(Text::sprintf('JLIB_APPLICATION_ERROR_BATCH_MOVE_ROW_NOT_FOUND', $pk));
                continue;
            }
        }
        // Check for asset_id
        if ($this->table->hasField($this->table->getColumnAlias('asset_id'))) {
            $oldAssetId = $this->table->asset_id;
        }
        $this->generateTitle($categoryId, $this->table);
        // Reset the ID because we are making a copy
        $this->table->id = 0;
        // Unpublish because we are making a copy
        if (isset($this->table->published)) {
            $this->table->published = 0;
        } elseif (isset($this->table->state)) {
            $this->table->state = 0;
        }
        $hitsAlias = $this->table->getColumnAlias('hits');
        if (isset($this->table->{$hitsAlias})) {
            $this->table->{$hitsAlias} = 0;
        }
        // New category ID
        $this->table->catid = $categoryId;
        $event = new BeforeBatchEvent($this->event_before_batch, ['src' => $this->table, 'type' => 'copy']);
        $this->dispatchEvent($event);
        // @todo: Deal with ordering?
        // $this->table->ordering = 1;
        // Check the row.
        if (!$this->table->check()) {
            $this->setError($this->table->getError());
            return false;
        }
        // Store the row.
        if (!$this->table->store()) {
            $this->setError($this->table->getError());
            return false;
        }
        // Get the new item ID
        $newId = $this->table->get('id');
        if (!empty($oldAssetId)) {
            $dbType = strtolower($db->getServerType());
            // Copy rules
            $query = $db->getQuery(true);
            $query->clear()->update($db->quoteName('#__assets', 't'));
            if ($dbType === 'mysql') {
                $query->set($db->quoteName('t.rules') . ' = ' . $db->quoteName('s.rules'));
            } else {
                $query->set($db->quoteName('rules') . ' = ' . $db->quoteName('s.rules'));
            }
            $query->join('INNER', $db->quoteName('#__assets', 's'), $db->quoteName('s.id') . ' = :oldassetid')->where($db->quoteName('t.id') . ' = :assetid')->bind(':oldassetid', $oldAssetId, ParameterType::INTEGER)->bind(':assetid', $this->table->asset_id, ParameterType::INTEGER);
            $db->setQuery($query)->execute();
        }
        $this->cleanupPostBatchCopy($this->table, $newId, $pk);
        // Add the new ID to the array
        $newIds[$pk] = $newId;
    }
    // Clean the cache
    $this->cleanCache();
    return $newIds;
}